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VADODARA MAHANAGAR SEVA SADAN

STRENGTHENING AND WIDENING OF BRIDGE ACROSS DRAIN NEAR MANGLESHWAR AT VADODARA

Volume ­ II

Technical Bid

(1)

Downloading Online Tender Documents www.nprocure.com

:

From 13-06-2011 to 30-06-2011

(2)

Last Date for

Online Submission of

:

30-06-2011 Upto 16.00 hours

completed tender Document (3) Technical Bid Opening : 30-06-2011 at 17.00 hours,

Municipal Commissioner Vadodara Mahanagar Seva Sadan

Khanderao Market, Rajmahel Road, Vadodara - 390209

June - 2011

VADODARA MAHANAGAR SEVA SADAN

TENDER DOCUMENTS INDEX Sr. No. 1. 2. 3. 4. 5. Particulars Tender Notice Published Receipt Notice Inviting Tender Details of work in brief SECTION I ­ CONDITIONS OF CONTRACT (A) Special conditions of contract and instructions to tenderers (B) Additional instructions to person tendering Declaration Form (C) General rules and directions for the guidance of contractors Tender for works Memorandum Bank Guarantee Form (D) Terms and conditions of contract Schedule A Schedule B (E) General Specifications SECTION II - TECHNICAL SPECIFICATIONS (A) Detailed specifications of materials (B) Technical specifications for the items (1) General (2) Specification for earth work excavation and back filling (3) Specification for pile foundation works (4) Specification for plain concrete, reinforced concrete (5) Strip Seal Or Compression Seal /Modular Type Expansion Joint (6) Specifications for Elastomeric Bearing (C) Itemwise Specifications SECTION III - DRAWING i) Location Plan Page No. 0 1 2 5 6 11 16

20 21 22 23 63 64 65

6.

67

80 82 88 108 137 148 152 to 168

7.

WIDENING/MAN GL-02-R0. ii) General Arrangement in Plan, Longitudinal Section & Cross WIDENING/MAN Section GL-03-R0.

Vadodara Mahanagar Seva Sadan

E-TENDER NOTICE

Websites: www.vmcegov.com/ www.vmcegov.org/ www.vmcgujrat.com/

www.vmcgujarat.org

Name of Work: Strengthening and Widening of Bridge Across drain Nr. Mangleswar Vadodara Mahanagar Seva Sadan invites online E-Tenders (Two-Bid System) for the following works from the competent & experienced bidders who are registered with Govt. of Gujarat in Class AA or A category & Special Category-I or II for Bridges or registered in similar class with other State Govt., Semi Government bodies or with Central PWD, Western Railway etc.

, Estimated cost (Rs. in Lacs) Time limit for completion of work 08 months E.M.D (Rs. in Lacs) Tender fee Rs. Downloading Last Date for Online Tender Online Submission Document from of Completed Tender Document (Date / Time) 13.06.11 To 30.06.11 30.06.11 Up to 16:00 Hrs. Technical bid opening (Date / Time) 30.06.11 Up to 17:00 Hrs.

1

188.76

3.78

5,000/-

GENERAL INSTRUCTIONS: (1)The tender document for above work can be downloaded from web site www.nprocure.com (2) Completed tender document shall be submitted online only on or before date mentioned above. (3)Technical bid will be opened on date 30.06.11at 17.00 hours. (4)Conditional tender shall not be accepted. (5) Other details of NIT shall be seen on web site. (6) Hard copies of technical bid , original copy of tender fees and EMD shall be submitted to Dy. Municipal Commissioner (Record Branch), Vadodara Mahanagar Seva Sadan, Khanderao Market Building, Rajmahel Road, Vadodara.-390209 by registered post/speed post/ hand to hand only on or before date 30.06.11 at 16.00 hours. Municipal Commissioner reserves the right to accept or reject any or all tenders without assigning any reason thereof. This Tender notice shall form a part of contract document.

PRO No. /2011-12 Executive Engineer (Bridges)

Tender P.R.O. No.

Details Department

Issue of tender Start End Date Date

Last Date for online submission of completed Tender Document 30-06-11 (Up to 16:00 Hrs.)

Exe. Engineer (Bridges)

Strengthning and Widening of Across drain Nr. Mangleswar.

13.06.11

30-06-11

D:\KUNAL_E\Kunal\VMC\VMC_4_Tender _16-05-2011\Mangleshwar_08-06-2011_rev\02_Strenthning & Widening of Bridge MANGLESHWAR TENDER NOTICE06-05-11.doc

VADODARA MAHANAGAR SEVA SADAN

Strengthening and Widening of Bridge Across Drain Near Mangleshwar at Vadodara

E-TENDER NOTICE

1. Vadodara Mahanagar Seva Sadan invites E-Tender on item rate basis from the reputed, financially strong Contractors having experience in construction of Over Bridges equipped to execute large projects and meeting the eligibility criteria specified in the tender. The contractor shall registered with Govt of Gujarat, other State Govt, Semi Govt bodies or Central PWD, Western Railway or other such institutions in the appropriate class for the work shown in the schedule given below for Vadodara . (A) GENERAL DETAILS OF WORKS: -

2.

Name Of Work: Tender For The Strengthening and Widening of Bridge Across Drain Near Mangleshwar at Vadodara on Item Rate basis.

Pack age . Name of Scheme Estimated cost (Rs. In lacs) Tender fee in Rupees E.M.D (Rs. In lacs) Time limit For completion of work Executing Authority

1

Strengthening and Widening of Bridge Across Drain Near Mangleshwar at Vadodara

188.76

5,000

3.78

8 months

Vadodara Mahanagar Seva Sadan.

B) SCHEDULE OF TENDERING: Sr. 1 Schedule Last Date for Online Submission of Completed Tender Document Opening of Technical Bid Time 16.00 hour Date Place

30-06-2011

2

17.00 hour

30-06-2011

www.vmcegov.com, www.vmcegov.org , www.vmcgujarat.org www.nprocure.com Office of Executive Engineer (Bridge), Khanderao Market Building, Rajmahel Vadodara Vadodara Vadodara Mahanagar Seva Sadan,

Road,

(C)

CONTACTING OFFICE: Executive Engineer, Bridges, Khanderao Market Building, Raj Mahal Road, VMSS Vadodara.

(D)

DOWNLOAD OF TENDER DOCUMENT: The tender document for this work is also available on website www.vadodaracity.com, www.vmcegv.org,www.vmcgujarat.org The bidder shall pay the Tender Fee to the VMSS and attach the receipt along with the Pre-qualification Document. Alternatively Demand Draft issued by any Nationalised Bank, in favor of Municipal Commissioner, payable at Vadodara shall be attached with the Pre-qualification Document.

(E)

SUBMISSION OF TENDER: The completed Tender document shall be submitted on above-mentioned web address. Tenders, which are not signed, will not be accepted. Hard copies of technical bid, original copy of tender fees and EMD in form of Bank Guarantee or Demand Drat of Nationalized Bank only in favour of Municipal Commissioner, VMSS shall be submitted to Dy. Municipal Commissioner (Record Branch), Vadodara Mahanagar Seva Sadan, Khanderao Market Building, Rajmahel Road, Vadodara ­ 390209 by registered post/speed post/hand to hand only on or before date 03-06-11 at 16.00 hours. The tenders not submitted online with the tender clauses and without EMD in the form specified, will be out rightly rejected. The Technical bid of only those bidders will be opened who have remitted tender fees and submitted EMD in the form of soft copy.

(F)

OPENING OF TENDER The Technical bid of package will be opened as mentioned in Sr. No. 2 (B) Para 3.0 above. Intending bidders or their representative who wish to participate in tender opening can remain present on the due date and time. Only one representative of each firm will be allowed to remain present. Price Bids of only those bidders will be opened, who are successful in the qualification Criteria and the Technical Evaluation. The date for price bid opening shall be informed to the successful bidders at a later date

(G)

GENERAL INSTRUCTIONS: 1. 2. 3. 4. 5. The tender document shall be accepted only by E- Tendering, on site www.nprocure.com The cost of Bid document will not be refunded under any circumstances. EMD in the form specified in Bid document only shall be accepted. The tender offer shall be valid for 120 days from the date of opening of Technical Bid. Tender offers without Bid document fees, Earnest Money Deposit (EMD) and which do not fulfill all or any of the condition or submitted incomplete in any respect will be rejected. Conditional tender shall not be accepted.

6.

7.

8.

9.

As per the Bombay Stamp Rules Act ­ 1958, Appendix ­ 1, Article 5, the Contractor shall enter in to an Agreement with the VMSS on Rs. 100 Stamp Paper and not to pay separate stamp duty. The Bidder shall submit only one bid in his name. Submission of any additional bids, for the same package in the name of their partner/associates/group company etc. shall disqualify them. Bidders shall submit PF registration certificate along with tender document.

10.

VMSS has employed Project Management Consultant & Third Party Inspection agency to monitor & supervise the said work. VMSS reserves the right to accept or reject any or all tenders without assigning any reason thereof. This Tender notice shall form a part of contract document. The tenderers are advised to read carefully the "Instruction" and "Eligibility Criteria" contained in the tender documents.

City Engineer Vadodara Mahanagar Seva Sadan Vadodara

VADODARA MAHANAGAR SEVA SADAN

TENDER DOCUMENTS FOR

Strengthening and Widening of Bridge Across Drain Near Mangleshwar at Vadodara

ISSUED TO

TENDERER'S NAME

:

TENDERER'S ADDRESS

:

DATE OF ISSUE

:

FORM OF RECEIPT OF TENDER FEE

:

DD/ BANKER CHEQUE

CITY ENGINEER, VMSS ­ VADODARA 390 209

1

VADODARA MAHANAGAR SEVA SADAN, VADODARA NOTICE INVITING TENDER

STRENGTHENING AND WIDENING OF BRIDGE ACROSS DRAIN NEAR MANGLESHWAR AT VADODARA 1. Municipal Commissioner invites the Item Rate E-tender (Two ­Bid System) as Pre-qualification Document Vol. 1, Technical Bid Volume II and Price Bid Vol. III, from the reputed and well experienced contractors who have experience for Strengthening and Widening of Existing bridge, construction of River Bridge / ROB / Flyover Bridge with pile foundation for Strengthening and Widening of Bridge Across Drain Near Mangleshwar at Vadodara The work of Strengthening and Widening of Bridge Across Drain Near Mangleshwar at Vadodara The work consist of as per the location plan, the arrangement drawing -GAD enclosed in the document with full supervision by VMSS Engineers for the work. The details are as under : i. Strengthening and Widening of Bridge Across Drain Near Mangleshwar at Vadodara. ii. Construction of RCC bored cast in situ pile 1000 mm dia in M-35 concrete. iii. Construction of RCC pile cap in M-30 concrete. iv. Widening bridge consist 1-span 10.72 m & two span 11 m in RCC solid slab in M:30 concrete. v. Elastomeric Bearings. vi. RCC Wearing coat in M:30. vii. Total length of Bridge is 32.72 m. The proposed construction work as shown above are as per Location Plan Drg. No. WIDENING/MANGL-02-R0., General Arrangement in plan and longitudinal section and cross section Drg. No. WIDENING/MANGL-03-R0. 3. The reputed construction agencies, who are registered with Government of Gujarat in class `A' category and special category - II for bridges, or contractor registered in similar class with other State Governments, Semi Government bodies or with central PWD and who have adequate resources and expertise to execute the work within specified time limit as specified in pre-qualification document will be considered for pre-qualification. Eligibility Criteria : The work of Strengthening & Widening of Existing Bridge, River bridge with pile foundation are considered to be of a specialized nature requiring adequate experience and technical know-how to overcome any problem either technical or safety oriented during the course of the execution. This work involves considerable expenditure and therefore, financial capability of the tenderer has also to be taken into account.

2

2.

4.

Technical Eligibility : The tenderer to be considered technically eligible should have adequate experience as specified hereunder. 1. The tenderer should have experience of Strengthening & Widening of Existing bridges, construction of River bridge / ROB / FOB with pile foundation and satisfactorily executed in the name of its organization atleast one similar nature of work costing not less than 50% of estimated cost of work at current price level during last five years as explain in Vol.-I. The Contractor shall have carried out atleast 1500 cum of structural concrete for Bridge Work in a year during last three years.

2.

Financial Eligibility : 1. 2. 5. The tenderer should have achieved an average annual certified financial turnover of Rs. 188.76 Lacs in last 3 years at current price level. The tenderer should have an adequate bid capacity of Rs. 188.76 Lacs.

The Estimated Cost of this Project Work is Rs. 1,88,76,100/-. The Earnest Money Deposit to be paid with the Tender is Rs. 3.78 Lacs which may be paid by Crossed Demand Draft or Bank Guarantee of Nationalised bank only, drawn in favour of the Municipal Commissioner, Vadodara Mahanagar Seva Sadan Vadodara and payable at Vadodra. The Tender Documents consist of in Three Volumes as under, Volume I Volume II Volume III Pre Qualification Document Technical Bid Document Price Bid

6.

7. 8.

The Tender Documents can be seen on web site as mentioned in NIT as above. DOWNLOAD OF TENDER DOCUMENT: The tender document for these work are available on website as mention in N.I.T. The bidder shall pay the Tender Fee to the VMSS and attach the receipt along with the Pre-qualification Document. Alternatively Demand Draft issued by any Nationalised Bank, in favor of Municipal Commissioner VMSS, payable at Vadodara shall be attached with the Pre-qualification Document.

9.

No conditional tender shall be accepted nor shall any sort of financial advance against award of the work be paid. The bidders are also advised to read carefully the special conditions of the contract and instructions to Tenderers contained in the tender document and the details contained in prequalification document, assess their eligibility and follow the procedures for submitting the tender documents to VMSS.

3

10.

The Municipal Commissioner, VMSS reserves the right, to or reject any or all tenders without assigning any reason. The tender shall be valid for 120 days from the date of opening of the tender. The costs of visit to site and preparing tender by the construction agencies for submission of the tender are not reimbursable by VMSS. Bidder shall have to execute the work under the supervision of Project Management Consultants & Third Party inspection agency appointed by Vadodara Mahanagar Seva Sadan. Bidder shall submit PF registration certificate along with tender document.

11. 12.

13.

14.

Date :

City Engineer Vadodara Mahanagar Seva Sadan Vadodara.

4

DETAILS OF WORKS IN BRIEF

1.

Name of work

:

Strengthening and Widening of Bridge Across Drain Near Mangleshwar at Vadodara Rs. 1,88,76,100/Rs. 3.78 Lacs 120 days 8 months

2. 3. 4. 5.

Estimated cost put to Tender Earnest Money at 2%

: :

Validity period of the Tender offered: The time allowed for completion of the work from the date of written order to commence work :

6. 7. 8. 9.

Date of Submission of tender documents : Date and time of opening the tender (PQ and Technical-Bid) : Mode of sending the Tenders :

30-06-2011 upto 16-00 Hrs.

Up to 17-00 Hrs. on 30-06-2011 Only by E-Tendering , on site www.nprocure.com Item rate Yes

Mode of Quoting in Schedule 'B' : (a) Rate and Amount to be quoted: in figures as well as in words :

10

Performance Bond

5 % of Tender Cost In the form of Bank Guarantee from Nationalised Bank Stationed at Vadodara valid for 3 years after completion of the work Payable as per terms and conditions of contract

11.

Mobilisation Advance / Machinery advance

:

Signature of Contractor Date :

City Engineer Vadodara Mahanagar Sevasadan Vadodara.

5

VADODARA MAHANAGAR SEVA SADAN, VADODARA

STRENGTHENING AND WIDENING OF BRIDGE ACROSS DRAIN NEAR MANGLESHWAR AT VADODARA

SECTION I - CONDITIONS OF CONTRACT (A) SPECIAL CONDITIONS OF CONTRACT AND INSTRUCTION TO TENDERERS 1.0 General : These instructions and conditions are in addition to those included in this tender document elsewhere but get precedence over them in case of any discrepancy / contradiction. 2.0 Scope of Work : The scope of work to be performed by the contractor is described broadly as under : 2.1 DETAILED SCOPE OF WORK :(1) (a) (b) (c) (d) Strengthening and Widening of Bridge Across Drain Near Mangleshwar at Vadodara De-marcating of the site, providing and maintaining the diversion for existing road traffic to move in smooth and safe manner. Dismantling of the part of the existing structure in the approach portion and excavation to depth and length as required. Shifting the utility service lines if any likely to interfere with the project work. Details of proposed work as under. i. Strengthening and Widening of Bridge Across Drain Near Mangleshwar at Vadodara. ii. Construction of RCC bored cast in situ pile 1000 mm dia in M-35 concrete. iii. Construction of RCC pile cap in M-30 concrete. iv. Widening bridge consist 1-span 10.72 m & two span 11 m in RCC solid slab in M:30 concrete. v. Elastomeric Bearings. vi. RCC Wearing coat in M:30. vii. Total length of Bridge is 32.72 m. Quantity is of the proposed work are in shown in BOQ.

(e) 2.2

All the work within VMSS limit will have to be done as per specifications and under full supervision by the VMSS engineers. The scope of work described above and explanatory notes given below are neither complete nor exhaustive but are added to assist the contractor to understand the requirements of the project. The detailed item wise scope is as described in the Bill of Quantities and specifications. However any item of work which is required to be carried out for proper and satisfactory completion of work whether or not it is specifically included in the Bill of Quantities shall be deemed to be included.

6

2.3

2.4

Location Plan Drawing showing the proposed work as prepared by VMSS is enclosed. This arrangement cannot be changed/modified. If however the tenderer proposes to modify the same without any change in alignment at or within the quoted amount of tender, the approval of VMSS have to be obtained before execution, for which no extension of time will be granted. The work will have to be executed as per the directions and supervision of the supervising VMSS engineers for work within their boundaries and to their satisfaction. The Engineer in Charge of the entire work will be the Executive Engineer, (Bridge) VMSS who will be operating the tender. However the works within VMSS limits have to be done under the supervision of concerned engineers as stated before. The payment of Running Bills for the work will be released by Engineer in Charge VMSS, after the same are approved and recommended by the VMSS engineers for passing and payment within 30 days of submission. The sequence of operation shall be decided in consultation with the Engineer-incharge. The contractor shall prepare the detail program of work in Bar Chart form and get the approval from the Engineer-in-charge before start of work. The contractor shall take care of all precautions and procedures etc, for executing the work. All schemes for diverting the road traffic as are necessary as well as providing safety measures shall be got approved from Engineer-in-charge and concerned traffic controlling authorities. In addition to the normal barricading, diversion sign boards and signs showing directions etc. are required to be provided, contractor shall have to provide special safety measures as directed by the Engineer-in-charge. Contractor shall have to provide Plain MS Sheet non transparent cladding to the worksite during entire construction period as directed by Engineer-in-charge, failing which VMSS shall penalize Rs. 250 / per R Mt per month. The contractor is advised to study the land requirements and problems of stacking, storing of construction materials, casting, working space, etc. His construction methods, specially for following works shall need to be carefully Planned. (A) Storing, stacking of materials like aggregates steel, cement, shuttering scaffolding materials, dismentalled material etc. (B) Planning of the equipments for dismantling, concreting etc. (C) Movement of his trucks, cars etc. (D) Location of his site office store etc. For this purpose VMSS will assist in providing VMSS land, only if it is free and can be made available. For any extra land required the contractor shall make his own arrangements with VMSS. VMSS will assist in the matter as may be feasible.

2.5

2.6

2.7

2.8

2.9 2.10

2.11

2.12

All the service and utility lines interfering with the work and those which require shifting shall be shifted by the VMSS.

7

2.13

All correspondence with VMSS for the work may be made directly with concerned authorities of VMSS. The contractor shall be responsible for the true and proper setting out of the works and for the correctness of the positions levels, dimensions and alignment of all parts of the works and for the provisions of all necessary instruments and appliances and labour in connection therewith. If at any time during the progress of works any error shall appear or arise in the positions, levels, dimensions or alignment of any part of the works, the contractor on being required to do so by the Engineer shall at his own expenses rectify such errors to the satisfaction of the Engineer-in-charge. The checking of any setting out or of any lines and levels by the Engineer-in-charge or his representative shall not in any way relieve the contractor of his responsibility for correctness thereof and the contractor shall carefully protect, preserve and maintain the site rails, pegs, benchmark etc. Which shall be deemed to be included in the rate quoted for various items in the Bill of Quantities and no separate payment will be made for the same. The contractor shall incorporate into the structure electrical lighting provisions as required and directed, drainage, road marks, signals etc. as may be given to him by the Engineer-in-charge, without claiming any extra cost. The details of the Approach pavements shall be as given in the Price Bid Items of the Tender. The bar bending schedule shall be prepared by the contractor and got approved from the Engineer-in-charge before planning of work, fabrication, cutting or assembling. Income Tax / Sales Tax shall be deducted at the rate prescribed by the IT/ST authorities from the running bills payable to the contractor. Bidder shall include in his cost all the taxes, duties, levies, etc as may be applicable for this work (material, labour and all the components) till the date of submission of the Tender. Any change in the tax / duty structure changed by the Government through official Gazettes, shall be Reimbursed / adjusted by VMSS. The Tender format is as per Govt. of Gujarat B-2 Tender form. The conditions as have been laid down in Govt. of Gujarat Tender B-2 form, shall be applicable with some revision/modification as per VMSS norms / decision. The Tenderer shall furnish a Performance Bond as prescribed in Clause 1 of Terms & Conditions together with a Bank guarantee from a approved bank, amounting to 5% of the sanction tendered amount of work at the time of issue of completion certificate which shall remain valid for one year after issue of completion certificate. In case of breakage of any existing service lines, it shall be immediately attended by the contractor failing which VMSS has full liberty to get work done at the cost and risk of the contractor over and above repairing charges / penalty as decided by the Engineer in charge shall be imposed and deducted from Bill of the

2.14

2.15

2.16

2.17

2.18

2.19

2.20

2.21

8

contractor. Time taken for repairing work shall be considered for stoppage according to merit. 2.22 For Road diversion permission VMSS will assist the contractor in getting the same from the concerned authorities however precautions related to safety, barricading, signboards etc. will be responsibility of the contractor. CESS TAX The tenderer for carrying out any Construction work in Gujarat must get themselves registered from the Registering Officer under Section-7 of the Building and Other Construction Workers Act, 1996 and rules made thereto by the Gujarat Government and submit certificate of Registration issued from the Registering Officer of the Gujarat Government (Labour Deptt.). For enactment of this Act, the tenderer shall be required to pay cess @ 1% of cost of construction work to be deducted from each bill. Cost of material shall be outside the purview of cess when supplied under a separate schedule item. 3.0 3.1 Other Conditions: Labour / Staff Accommodation The contractor shall not construct any hutments for labour staff accommodation without the prior written permission from the Engineer-in-charge. He shall also acquaint himself with the general policy of the VMSS and of the Engineer-in-charge. which may be issued from time to time relating to construction, labour and staff. 3.2 Site office for VMSS & Consultants Staff The contractor shall construct and maintain a site office where adequate portion be kept for the use of VMSS / Consultant staff. They should be provided with proper furniture, storage, space and other amenities. 3.3 Presence of Vadodara Mahanagar Seva Sadan Authorities and its agents Vadodara Mahanagar Seva Sadan Authorities or any other agency appointed by VMSS to carry out work on its behalf for this or any other work required to be carried out within the area handed over to the contractor should be allowed to operate in a harmonious way without hindrance. All the co-operation should be extended by the contractor to plan his activities in such a way that all works would proceed smoothly. The contractor shall make his own arrangement for water supply and Electricity for construction. The rates quoted by the tenderer shall be inclusive of all charges. 3.4 Insurance for works, workmen compensation and of third party Contractor has to insure work done by him, material, equipment lying on site from commencement to completion of work against any risk like theft, fire damage due to accidents etc. Contractor shall also take CAR (Contractor All Risk Insurance) He will also insure his staff and labour working on site against any injury or death due to accidents for the same period conforming with workman's compensation act.

2.23

9

He will also have third party insurance to cover the risk of damage to the public or private property etc. during the constructional activities for a minimum amount of Rs. 5,00,000 on any one accident and number of accidents may be taken as unlimited. Contractor is not entitled for additional payment for the above insurance. He will cover the premium etc. required to be paid in the price quoted by him. 3.5 Rates and Prices The rates and prices shall include for the provision of plant and equipments, labour, supervision, materials, erection, insurance, maintenance, overheads and profits and every incidental and contigent costs and charges whatsoever including sales tax, general tax, octroi, all taxes etc. for compliance with the conditions of contract and the specifications. The specifications are intended to cover the supply of all materials and execution of all works necessary to complete the works. Should there be any detail of construction or materials which has not been referred to in the specifications or in the Bill of Quantities and drawings but the necessity for which may be implied or inferred therefrom, or which are useful or essential to the completion of the work in the trades, the same shall be deemed to be included in the rates and prices quoted by the contractor in the Bill of Quantities. 5% Mobilization Advance shall be given against Bank Guarantee from Nationalized Bank. It will be recovered on pro rata basis from the first four running bills. If the contractor fails to achieve progress within 2 months after release of mobilization advance, VMSS shall recover mobilization advance with interest. Secured Advance ­ will be payable on materials as per terms and conditions of contract against bank guarantee for equivalent amount. 4.0 Arbitration The Arbitration shall be considered in accordance with the provisions of Arbitration Clause 30 under terms and conditions of contract. The disputes about the claims etc shall as far as practicable shall be sorted out in the meetings by all concerned. However if this fails and the contractor insists the disputes will be referred as far as possible to a sole arbitrator appointed by mutual consent. In case of disagreement on the appointment of sole arbitrator disputes will be referred to two arbitrators one to be appointed by each party in accordance with and subject to the provisions of the Indian Arbitration Act , 1996.

Signature of Contractor Date :

City Engineer Vadodara Mahanagar Seva Sadan Vadodara

10

(B) 1.

ADDITIONAL INSTRUCTIONS TO PERSONS TENDERING Competency of Tenderer : The contract will be awarded from amongst the agencies who are pre qualified and are considered as eligible to undertake this work. The agency quoting the lowest rate will be considered, however VMSS reserves the right to award the work to other tenderer, if in their opinion the other is more experienced or is more resourceful and has more experienced engineer to work as site engineer and that he has a record of completing the jobs within time limit without any legal disputes. Before the award of the contract any bidder may be required to show that he has the necessary facilities, experienced engineers, required equipment, ability and financial resources to perform the work in satisfactory manner within the time stipulated. Contractor may be required to furnish the VMSS any additional information as may be required in this connection.

2.

Site Conditions : Tenderer will be deemed to have inspected the site and to have satisfied himself as to the nature of all works, all existing roads, waterway and other means of communication and access to and from the site of work and the building that may be required for temporary purpose in connection with the construction, completion and maintenance of the works and must make his own enquiry as to work, yard, sites, and depot and dumps and as to the acquisition of such additional sites and areas as may be necessary for temporary purpose for constructing, completing and maintaining the works.

3.

Program of Work: The contractor shall furnish a Bar Chart Program showing as to how he proposes to undertake the work, maintain the progress and complete within prescribed time limit. On award he may have to modify it suitably in consultation with VMSS as may be required by VMSS, and agree to adhere to it..

4.

Payment : The tenderer must understand clearly that the rates quoted, are for completed items of work and include all cost due to materials, labour, scaffolding, plant, supervision, service work, power, royalties and octroi and all applicable taxes etc. and include all extras to cover the cost of night work if and when required. No claim for additional payment beyond the prices or rates quoted will be entertained and the tenderer will not be entitled subsequently to make any claim on the ground of misrepresentation or on the ground that he was supplied with information given by any person (whether the member is the employee of VMSS or not). Any failure on his part to obtain all necessary information for the purpose of making this tender and filling the several prices and rates therein shall not relieve him from any risks or liabilities arising out of, or consequent upon the submission of the tender.

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5.

Tender forms : Every 'blank' in the form of tender and in the schedule must be filled up by the tenderer and he must return the documents sent here with.

6.

Erasures : Contractors tendering are informed that no erasures or alterations by them in the text of the documents sent herewith will be allowed and any such erasures or alternations will be disregarded. If there is any error in writing, no over writing should be done, but the wrong word or figure should be struck out and the correct one written above or near it in unambiguous way. Each correction shall be initialed by the authority signing the tender.

Signature of Contractor Date :

City Engineer Vadodara Mahanagar Seva Sadan Vadodara

12

4. 1.

TENDERERS TO PLEASE READ THIS CAREFULLY The Item Rates for items in Schedule 'B' must be given in words and figures. Total Amount must be computed by the tenderer and shown in figures and words specifically showing the overall tender costs of the work. If the tender is taken in favour of a company, the power of attorney in favour of the person who may have signed the tender for the company must accompany the tender. Solvency Certificate of a Bank or a Revenue Officer of an amount upto 20% of the tendered cost plus the amount of works on hand still to be executed will have to be produced by the Contractor. Tenderer shall pay Earnest Money Deposit amounting to 2% of the estimated cost of work and amounting to Rs. 3.78 Lacs in the form of Crossed Demand Draft or by Nationalised Bank Guarantee only and drawn in favour of the Municipal Commissioner, Vadodara Mahanagar Seva Sadan, Vadodara Payable at Vadodara Payment in any other form is not accepted. The Contractor shall have to furnish the information regarding Income Tax, the assessment number, P. N. number and ward under which he is assessed. Copies of certificate as regards previous experience, must accompany the tender. Declaration showing all works on hand with the tenderers and the value of works that remain to be executed in each case must accompany tender. All pages of Schedule 'A', 'B', and specifications shall be initialed by the tenderer. All corrections, over writing and their erasures shall be initialed by the tenderer. Any error in quantity or amount in Schedule 'B' showing items of works to be carried out shall be adjusted in accordance with the following rules : (a) In the event of a discrepancy between description in words and figures quoted by a tenderer in the 'rates' column, the description in words shall prevail. In the event of an error occurring in the 'amount' column of the Schedule 'B' showing items of work, as a result of wrong multiplication of the unit-rate and quantity, the units-rate shall be regarded as firm and multiplication shall be amended on the basis of the rates. All errors in totaling in 'amount' column and in carry forward totals shall be corrected. Any rounding off of amounts against 'items' or in 'totals' shall be ignored.

2.

3.

4.

5.

6. 7.

8. 9. 10.

(b)

(c)

(d)

13

10.A

I)

The Tender will be considered as invalid, if the requirements as per instruction no.1 to 10 above are not complied with before submitting the tender or else it is observed that the information as furnished in tender are not correct. The face-sheet and "General Rules and Directions for the guidance of Contractors" of this form needs to be properly followed. VMSS reserves its Right to reject any or all tender (s) without assigning any reasons thereof.

II) 11.

In addition to the above, the tender will also be liable to be rejected outright if : I) The tenderer proposes any alteration in the GAD of work or in the time allowed for carrying the work or any correction made in any code or mode of schedule 'B' or specifications. If the contractor however wishes to propose a modified GAD, it shall be considered only if it is acceptable to VMSS and that it results is substantial saving in project cost. The alignment as proposed in tender document shall not be changed and no extension of time limit on this account will be permissible. II) The Tenders are to be submitted without any Conditions. However if the contractor wishes he may put any condition but it shall be inclusive of its financial implication which result in variation in the cost of work. Any of the page / pages of the tender is/are removed or replaced. All corrections, additions or pasted slips are not initialed by the tenderer. Any erasure is made by him in the tender. The tenderer or in the case of a firm, each partner or the person holding the power of attorney there of, does not sign or the signature's is/are not attested by a witness on the tender in the space provided for the purpose.

III) IV) V) VI)

12.

Ready mix concrete shall be used for all concrete work having quantity of concrete more than 5 cmt. A certificate of registration as approved contractor shall be attached with the tender. 1) Several documents forming the contract are the essential parts of the contract and a requirement occurring in any one is as binding as though occuring in all. These requirements are intended to be mutually explanatory and complementary and to describe and provide for a complete work. In the event of any discrepancy, in several documents forming the contract or in any one document, the following order of precedence should apply : Dimension and quantities : Drawings approved for construction. Schedule 'B' of the tender form. Specifications.

13. 14.

2) a) I) II) III)

14

On drawings, figured dimensions, unless obviously incorrect, will be followed in preference to scaled dimensions. b) I) II) III) Description : Schedule 'B' of the tender form. Drawings. Specifications.

In case of defective description or ambiguity, the Engineer-in-charge shall issue further instructions directing in what manner the work is to be carried out. It may have to be understood that the best modern practice has to be followed. The contractor shall forthwith comply with such instructions. 3. The Contractor shall take no advantage of any apparent error or omission in drawings or specifications and the Engineer-in-charge shall make such corrections and interpretations as necessary to fulfill the intent of the plans and specifications.

Signature of Contractor Date :

City Engineer Vadodara Mahanagar Seva Sadan Vadodara

15

DECLARATION FORM

Name of work

:

Strengthening and Widening of Bridge Across Drain Near Mangleshwar at Vadodara

1.

I/We hereby declare that I/We have visited the site and fully acquainted myself / ourselves with the local situation regarding materials, labour and other factors pertaining to the work before submitting this tender. I/We hereby declare that I/We have carefully studied all the Tender Documents fully and inclusive of the Conditions of Contract,. Specifications for this work and agree to execute the same accordingly. I/We hereby agree that I/we shall not charge any costs towards the visit of site and preparing the tender for submission to VMSS.

2.

3.

Signature of Contractor Date :

City Engineer Vadodara Mahanagar Seva Sadan Vadodara

16

3. (C) GENERAL RULES CONTRACTORS : 1.

&

DIRECTIONS

FOR

THE

GUIDANCE

OF

All works proposed to be executed by contract shall be notified in a form of invitation to tender, pasted on a board hung up in the office of the VMSS Vadodara signed by the Municipal Commissioner, VMSS, Vadodara. This form will state the work to be carried out, as well as the date for submitting and opening tenders, and the time allowed for carrying out the work; also the amount of earnest money to be deposited with the tender, and the amount of the security deposit to be paid by the successful tenderer and the percentage, if any, to be deducted from bills. It will also state whether a refund of quarry fees, royalties and ground rent will be granted, copies of the specifications, designs and drawings and estimated rates, scheduled rates and any other documents required in connection with the work which shall be signed by the Executive Engineer for the purpose of identification shall also be open for inspection by Contractors at the office of the Vadodara Mahanagar Seva Sadan during office hours.

2.

In the event of the tender being submitted by a firm, it must be signed separately by each partner thereof, or in the event of the absence of any partner, it shall be signed on his behalf by a person holding a power-of-attorney authorising him to do so. Receipts for payments made on account of any work when executed by a firm, shall also be signed by all the partners, except where the contractors are described in their tender as a firm, in which case the receipt shall be signed in the name of the firm by one of the partners or by some other person having authority to give effectual receipts for the firm. Any person, who submits a tender, shall fill up the usual printed form including the column `total' according to estimated quantities, stating at what rate he is willing to undertake each items of the work. Tenders which propose any alteration in the works specified in the said form of invitation to tender, or in the time allowed for carrying out the work, or which contain any other conditions of any sort, will be liable to rejection. The Municipal Commissioner, VMSS or his duly authorised assistant, shall open tenders in the presence of any intending contractors who have submitted tenders or their representatives who may be present at the time and he will enter the amounts of the several tenders in a comparative statement in a suitable form. In the event of a tender being accepted, the contractor, shall, thereupon, for the purpose of identification, sign copies of the specifications and other documents mentioned in this tender. In the event of a tender being rejected, the VMSS shall authorise the officer concerned to refund the amount of the earnest money deposited by the contractor while submitting the tender on his giving a receipt for the return of the money. The officer competent to accept the tenders shall have the right of rejecting all or any of the tenders.

17

3.

4.

5.

6.

7.

No receipt, for any payment alleged to have been made by a contractor in regard to any matter relating to this tender or the contract, shall be valid and binding on VMSS unless it is signed by the Municipal Commissioner, VMSS Vadodara. Under no circumstances shall any contractor be entitled to claim enhanced rates for any items in this contract. Every contractor shall, unless exempted in writing by the VMSS, produce along with this tender, a solvency certificate of his financial stability from the collector of the District within which he resides or a Banker's certificate. If he fails to produce such a certificate, his tender will not be considered. All corrections and additions or pasted slips should be initialed. The measurements of work will be taken according to the usual method in use in the VMSS and as per I.S. code for general practice and no proposals to adopt alternative method will be accepted. The Municipal Commissioner VMSS, Vadodara's decision as to what is "the usual method in use in the VMSS", will be final. The insurance company's bond will not be accepted against the security deposit. The contractor shall have to attach to his tender, Income-tax clearance certificate to be obtained from the income-tax officer. No foreign exchange will be released by the Department for the purpose of plant and machinery required for the execution of the work contracted for. Controlled materials (essentially Certificate) I) As regards controlled materials, the VMSS will help to arrange for the permit as far as possible and help the contractor in securing the same. All incidental charges incurred in procuring these materials shall be borne by the contractor himself. Though the VMSS will help to arrange for the permit as far as possible and help the contractor in obtaining the materials, it shall not accept any responsibility for any delay or loss on account of delay caused to the contractor while obtaining the same. The contractor shall submit to City Engineer , VMSS on close of every calendar month, the monthly returns in the prescribed forms as to the receipts and actual use of the controlled materials during the month. The contractor shall permit the Municipal Commissioner or his representatives to inspect the stock of the controlled materials stored by him at any time whenever the Executive Engineer or his representative (s) so desire(s).

8.

9.

10. 11.

12. 13.

14.

15.

II)

III)

18

16.

The tender for the work shall remain open for a period of 120 days (one hundred and twenty days) from the date of opening of the tenders for this work and that the tenderer shall not be allowed to withdraw or modify the offer on his own during this period. If any tenderer withdraws or makes any modifications or additions in the terms and conditions of his tender, not acceptable to the VMSS, then, VMSS shall, without prejudice to any right or remedy, be at liberty to forfeit in full the said earnest money absolutely. The contractor shall employ only such labour who shall produce a valid certificate of having been vaccinated against small pox within a period of last three years.

17.

Signature of Contractor Date :

City Engineer Vadodara Mahanagar Seva Sadan Vadodara

19

TENDER FOR WORKS

I/We hereby submit our tender for the execution of the work of the Vadodara Mahanagar Seva Sadan, Vadodara (herein before and hereinafter referred to as "VMSS") as has been specified in the under written memorandum, within the time as specified therein at the rates as quoted by us in Schedule 'B' (memorandum showing items of works to be carried out) as shown in our tender and in accordance with all the specifications, designs, drawings and instructions in writing referred to in this tender and in clause 13 of the annexed conditions of contract and agree that when materials for the work are provided by the VMSS such materials and the rates to be paid for them shall be as provided in Schedule 'A' hereto.

Signature of Tenderer Date :

City Engineer Vadodara Mahanagar Seva Sadan Vadodara

20

MEMORANDUM (a) General Description : Strengthening and Widening of Bridge Across Drain Near Mangleshwar at Vadodara

(b) (c)

Estimated Cost Earnest Money

: :

Rs. 1,88,76,100/To be paid in by crossed D.D. or in the form of Bank Guarantee from Nationalised Bank only and payable at Vadodara 2% of the Estimate amount of tendered work Total Amount of Security payable on award of work on signing agreement At 5 % of Project Cost of Work Rs. 9,43,805/This amount includes EMD amount

(d)

Security deposit

:

Security Deposit The person / persons whose tender may be acceptable (hereinafter called the Contractor) shall within 15 days of the receipt by him of the notification of the acceptance of the tender, shall remit 3% Security Deposit on the accepted value of the tender to the Vadodara Mahanagar Seva Sadan or may be deducted from each running bill by 10% of Bill amount. Earnest Money Deposit will be converted into Security Deposit. Security Deposit may be accepted in the form of Bank Guarantee from Nationalised Bank.

21

FORM `A' BANK GUARANTEE FOR EARNEST MONEY In consideration of the Municipal Corporation of the city of Vadodara (hereinafter to as the corporation) having agreed to exempt ________________________________ (hereinafter referred to as "the said Contract") from the demand of security deposit / earnest money in cash for the due fulfillment of the terms and conditions of the agreement made between the corporation and the said contractor on ___________________________ for _______________________________________________________ (hereinafter referred to us "the said agreement") on production of Bank Guarantee for Rs. ___________________ Rupees _________________________________________________________ only. We ______________________________________________ Bank (hereinafter referred to as "Bank") do hereby undertake to pay to the Corporation as a amount not exceeding Rs. ______________________ Rupees __________________________________________________ only on the demand from Corporation. Any such demand on the bank shall be conclusive as regards as amount due and payable by the bank under this guarantee. However, liability of the bank under this agreement shall restricted to as amount not exceeding Rs. _______________________ Rupees ___________________________________________________only. We the bank further agree that the guarantee herein contain shall remain in full force and effect during the period that would be taken for the performance of the said agreement and that it shall continue to be enforceable till all the dues of the Corporation under or virtue of the said agreement have been paid and its claim satisfied or discharged and till a certificate to the effect has been received by the bank from the Corporation. However, unless the demand of claim under the guarantee is made to the bank in writing on or before the ________________________ (specify the date) the bank shall be discharged from all liabilities under this guarantee. With the bank further with Corporation shall have fullest liberty, without the concert of the bank without effecting in any manner it obligations herein under to vary any of the terms and conditions of the said agreement or extend time for performance by the said contract from time to time or to postpone for any time or from time to time any of the powers exercisable by the Corporation against the said Contractor and to forebear to enforced any of the terms and conditions relating to the said agreement and the bank shall not be relieved from liability by reason of any such variation, or extension granted to the contractor for any forbearance, at all omission on the part of the Corporation or any indulgence by the Corporation to the said Contractor or by any such matter or thing whatsoever which under the law relating to sureties would, but this provision, have the effect of so relieving the Bank. We _____________________________________________ the bank undertake not to revoke the Guarantee during currency except with the previous concert of the Corporation in writing. Dated the _______________________ day of __________________ of 20___________ For _______________________________ Bank

22

D)

TERMS AND CONDITIONS OF CONTRACT ADDITIONAL CONDITIONS OF CONTRACT : All additional conditions given in the clauses appearing herein after shall be deemed to form part of the contract and shall be deemed as supplementary to the same. These additional conditions shall be binding on the contractor in the same manner as other terms and conditions in this item rate contract. Clause 1 : Security Deposit The client shall be deemed to have been authorised to deduct the balance of fifty percentage of the security deposit as specified in this document from the amounts that become payable to the contractor for the work done under the contract from time to time. Such deductions shall not exceed five percentage of bill being paid. The whole amount paid in cash or by way of deductions shall be held by client by way of security deposit for this work. The contractor shall have to give in prescribed form Annexure-I the performance bond of any schedule bank equivalent to five percentage of the estimated amount put to tender on issue of work order and before start of work. All compensation, liquidated damages or other sums or money payable by the contractor to client under the terms of this contract shall be deducted from or recouped by the realization of a sufficient part of his security deposit or from the interest arising therefrom or performance bond or from any sums which may be due or becomes due by client to the contractor on any account whatsoever and whether in respect of this contract, any other contract, or otherwise.

In the event of his security deposit being reduced by reason of any such deduction or requirement as aforesaid any sum or sums required to make good shortfall in the amount of the security deposit shall be paid by the contractor. If the full amount of the security deposit to be paid as above within the period specified above, is not paid, the tender / contract already accepted shall be considered as cancelled as the legal steps shall be taken against the contractors for recovery of the amount. Fifty percent of the security deposit shall become refundable within fifteen days after the final completion certificate is issued a per clause 7. All dues under this contract or other contract, or otherwise including the royalty charge if "No due certificate" is not produced by the contractor, shall be recovered from the aforesaid amount of fifty percentage of the said security deposit and the balance shall be refunded within fifteen days after the final certificate is issued as per clause 7. The remaining fifty percent of security deposit shall be refunded after the expiry of the defect liability period as per clause 17 and 17 ­ A after deducting therefrom the amount of expenses, if any, due to VMSS under this contract.

23

Clause 2 : Liquidated damages for delay (i) If the contractor fails to complete the work under contract by the stipulated date, he shall pay liquidated damages of 0.1 percent of the contract value per week from the day of delaying the said work up to the date of completion and handing over to the client. (Maximum 10% of tender cost). However, also if the contractor fails to complete any part of the work as designated in Annexure ­ II by the time indicated against such parts, he shall pay liquidated damages per week from the date of delaying the said part of the work up to the date of completion of the said designated part, at the rates shown in the said schedule of the contract value of such part for such failure, till the said designated part is completed. The aggregate maximum of liquidated damages payable under the Clause 2 shall not exceed Rs. 0.1 percentage of contract value per week and shall be subject to the maximum amount of ten percent of the estimated amount put to tender. Delays requiring payment of ten percent liquidated damages of the amount put to tender for performance shall be sufficient causes for termination of contract and forfeiture of security deposit, (including amount of performance bond) in respect of works estimated to cost more than 15 lacs, for performance and registration of the contractor shall also be kept in abeyance for three years from the date as fixed in all cases.

(ii)

(iii)

(iv)

24

Performance Bond Annexure-I (See Clause No. 1(b))

(The date of this bond must not be prior to the date of the instrument in connection with which it to given) Principal (Contractor)

Surety (Bank)

Sub of bond (Express in words and figures)

Contract No.

and date of Contract

KNOW ALL MEN BY THESE PRESENTS, THAT WE, THE PRINCIPALS AND SURETY

above mentioned are held and firmly bound unto the municipal commissioner, VMSS, Vadodara ­ 390 001, owner of the work of Strengthening and Widening of Bridge Across Drain Near Mangleshwar at Vadodara, hereinafter called the "employer" in the amount stated for payment of which sum, well and truly to be made, we bind ourselves, our heirs, executors, administrators and successors jointly and severally, firmly by these presents subject to the provisions of which the aforesaid contract on demand and without demand on a claim being made by the "employer". THE CONDITION OF THIS OBLIGATION IS SUCH, that whereas the principals herein after called contractor viz. have entered into a contract with the Employer numbered and dates as shown above and hereto attached for the execution of work. NOW THEREFORE, if the principal shall well and truly perform and fulfil all the under takings, covenants, terms, conditions and agreements, of said contract during the original terms of the said contract and any extensions thereof, they may be granted by the employer with or without notice to the surety and during the lift of any guarantee required under the contract and shall also well and truly perform, and fulfil all the undertakings, contract, terms, conditions and agreements of any and all duly authorized modifications of said contract that

25

may hereafter be made, notice of which modifications to the surety being hereby waived or shall pay over, make good and reimburse to the employer all losses and damages which the employer may sustain by reason of failure or default on the part of said principal so to do. We _____________________________________________ further agree that guarantee herein contained shall remain in full force and affect during the period that would be taken for the validity _______________________ of the said contract and that it shall continue to be enforceable till all the dues of the employer under or by virtue of the contract have been fully paid and its claims satisfied of discharged or till the Employer certifies that the terms and conditions of the contract have been fully and properly carried out by the said contractor and accordingly discharges the guarantee. Unless a demand or claim under this guarantee is made on us in writing on or before the ___________________________________________ _____________________________________________ we shall be discharged from all liability under this guarantee thereafter. IN WITNESS WHEREOF the above bounded parties have executed this instrument under their several on the date indicated above the name and corporate seal of each corporate party being hereto affixed and these presents duly signed by its undersigned representative, pursuant to authority of its governing body.

In the presence of witness 1. 2. 3. 4.

Individual as to as to as to as to Affix

Principal (Seal) (Seal) (Seal) (Seal)

By

Corporate Seal

Attested

Corporate Surety Business Address Affix

By

Corporate Seal

Title For and on behalf of the employer

26

Annexure ­ II [See Clause No. 2 (ii)] Time schedule, for completion of different designated parts of the work and rate of liquidated damages to be paid by the contractor, if he fails to complete the part of work within stipulated time limit is as detailed below.

Time Schedule of completion

Rate of liquidated damages per week

Maximum upto

Percentage of time of the total time limit 25% 50% 75% 100%

Percentage of work

10% 40% 80% 100%

0.1% 0.1% 0.1% 0.1%

10%

27

Clause 3 : Default by contractor If the contractor shall neglect or fails to proceed with the work with due diligence or if he violates any of the provisions of the contract, the Engineer-in-charge shall give the contractor a notice, identifying deficiencies in performance and demanding corrective action. Such notice shall clearly state that is given under the provision of this clause. After serving of such notice, the contractor shall not remove any plant, equipment and material from the site. The client shall have a lien on all such plant, equipment and materials from the date or such notice till the said deficiencies have been corrected as mentioned in the said notice. If the contractor fails to take satisfactory corrective actions within ten days after receipt of such notice, the Engineer-in-Charge on behalf of client shall terminate the contract in whole. Incase the entire contract is terminated and the amount of security deposit and performance bond together with the value of the work done but not paid for, shall stand forfeited to the client. The plants, equipment and materials held under this clause shall then be at the disposal of the client to recover the amount equivalent to the liquidated damages and registration of the contractor shall be kept in abeyance for three years from the date as fixed in all such cases. The Engineer-in-charge if necessary shall direct that a part or whole of such plant, equipments of material be removed from the site within a stipulated period. If the contractor fails to do so, the Engineer-in-charge shall cause them or / and part of them to be sold holding the net proceeds of such sale to the credit of the contractor. After settlement of accounts, the lien by the client of the contractor's remaining plant, equipment and balance of all material shall be released. Termination of the contract in whole shall be an adequate authority for the Engineerin-charge to demand discharge of the obligations from the guarantors of the security for the performance. Clause 4 : Progress on work If the progress of any particular portion of the work under contract is unsatisfactory, the engineer-in-charge shall, notwithstanding that the general progress or the work is satisfactory, in accordance with clause 2 be entitled to make necessary action under clause 3, after giving the contractor ten days notice in writing and the contractor shall have no claim what so ever for any compensation for any loss caused to him due to such action. Clause 5 : Waiving of powers In any case in which any of the powers conferred upon the engineer-in-charge by clause 3 hereof shall have become exercisable and the same shall not have been exercised, the non exercise thereof shall not constitute a waiver or any of the conditions hereof and such power shall notwithstanding be exercisable at any future date.

28

Clause 5-A : In the event of Engineer-in-charge taking action under clause ­ 3, he may if he so desires, take possession of all or any tools, plants, machineries, materials and stores in or upon the works or the site thereof or belonging to the contractor or procured by him and intended to be used for the execution of the work or any part thereof, paying or allowing for the same in account at the contract rate or in case of contract rates not being applicable at such reasonable rates, as may be comparable to current market rates where ascertainable of similar articles and comparable condition, to be certified by the engineer-in-charge. In the alternative the engineer in charge may, by notice in writing to the contractor or his clerk of works, foreman or other authorized agent require him to remove such tools, plants, machinery, materials or stores from the premises within a time to be specified in such notice and in the event of contractor failing to comply with any such requisition, the engineer in charge may remove them at the contractors expense or shall remove them by auction or private sale at the risk and cost of the contractor in all respects, and the certificate of the engineer in charge to the expenses of any such removal and the amount of the proceeds and expenses of any such removal shall be final and conclusive against the contractor. Clause 6 : Extension of time : If the contractor shall desire an extension of the time for completion of the work on the ground of his having unavoidably hindered in its execution or any other ground, he shall apply, in writing to the engineer in charge before the expiration of the period stipulated in the tender or before the expiration of 30 days from the date on which he was hindered which ever is earlier and engineer in charge may, if in his opinion, believe that there are reasonable grounds for granting and extension, grant an extension as he thinks necessary or proper. The decision of the engineer in charge in this matter shall be final. Clause 7 : Completion certificate As soon as the work is completed, the contractor shall give a notice of such completion to the engineer in charge and on receipt of such notice, the engineer in charge shall inspect the work, and if he is satisfied that the work is completed in all respects then in respect of work is costing more than 50 lacs (amount put to tender) the final measurements shall be prepared within 75 days from the date of physical completion of the work and the final bill shall be prepared within 75 days from the date of recording final measurements. Subject to the contract fulfilling his obligations as provided in the contract and subject to the work being complete in all respects, when separate period of completion have been specified for items or groups of items, the Engineer-in-Charge shall issue separate completion certificate for such items or groups of items. No certificate of completion shall be issued, nor shall the work be considered to be complete till the contractor shall have removed from the premises, on which the work has been executed, all scaffoldings, sheds and surplus materials, except, such, as are required for rectification of defects, rubbish and all huts and all sanitary arrangements required of workmen on the site in connection with the execution of work as shall

29

have been erected by the contractor for the workmen and cleared all dirt from all parts of building(s) in, upon or about which the work has been executed or of which he may have possession for the purpose of execution thereof and cleared floors, gutters and drains, cased doors and sashes, oiled locks and fastenings labeled keys clearly and handed them over to the engineer in charge or his representative and made the whole premises fit for immediate occupation or use to the satisfaction of the engineer in charge, if the contractor shall fail to comply with any of the requirements of these conditions as aforesaid on or before the date of completion of the works, the engineer in charge may, at the expense of the contractors, fulfil such requirement and dispose of the scaffolding, or surplus materials and rubbish etc. as he thinks fit and the contractor shall have no claim in respect of any such scaffoldings or surplus materials except for any sum actually released by the sale thereof, less the cost of fulfilling the requirements and any other amount that may be due from the contractor. If the expenses of fulfilling such requirements are more than the amount realized on such disposal as aforesaid, the contract shall forthwith, on demand, pay such excess. The engineer in charge shall also have the right to adjust the amount of excess against any amount that may be payable to the contractor. Clause 8 : Payment of Bills No payment shall be made for any work, estimated to cost less than rupees one thousand till after the whole of the said work shall have been completed and a certificate of completion given. But in the case of works estimated cost more than rupees one thousand, the contractor shall on submitting a monthly bill therefore, be entitled to receive payment proportionate to the part of the work then approved and passed by the engineer in charge, whose certificate of such approval and passing of the sum so payable shall be final and conclusive against the contractor. All such intermediate payments shall be regarded as payment by way of advance against the final payments only and not as payment of work actually done and completed and shall not preclude the engineer in charge from requiring bad, unsound, imperfect or unskilled work to be removed and taken away and reconstructed or re-erected, nor shall any such payment be considered as an admission of the due performance of the contractor or any part thereof in any respect of the occuring of any claims, nor shall it conclude, determine or affect in any way the power of engineer in charge as to the final settlement and adjustment of the account or otherwise or in any other way vary or effect the contract. The final bill shall be submitted by the contractor within one month of the completion of the work, otherwise the engineer in charge's certificate of the measurements and of the total amount payable for the work shall be final and binding on all parties. Payment of RA Bills shall be made by VMSS within 30 days of submission of RA Bills with all details. Clause 9 : Validity of rates The rates for items of work shall be valid only when the item concerned is accepted as having been competed fully in accordance with the sanctioned specification. In cases where the items of work are accepted as not so completed, the engineer in charge may make payment on account of such items at such reduced rates as he may consider reasonable in preparation of final or on account bill.

30

Clause 10 : Bills to be submitted monthly : A bill shall be submitted by the contractor each month on or before the date fixed by the engineer in charge for all work executed in the previous month and the engineer in charge shall take or cause to be taken the requisite measurement for the purpose of having the same verified and the claim, so far as it is admissible shall be adjusted, if possible within ten days from the presentation of the bill. If the contractor does not submit the bill within the time fixed as aforesaid, the engineer in charge may depute a subordinate to measure up the said work in the presence of the contractor or his duly authorized agent whose counter signature to the measurement list shall be sufficient warrant and the engineer in charge may prepare a bill from such list which shall; be binding on the contractor in all respects. Clause 11 : Bills in printed forms The contractor shall submit all the bills on printed forms to be had on application at the office of the engineer in charge. The charges to be made in the bills shall always be entered at the rates specified in the agreement or at the part / reduced rates subject to the approval by the engineer in charge n the case of items not completed / executed as per agreement or in the case of any extra work ordered in pursuance of these conditions and not mentioned or provided for in the tender, at the rate hereinafter provided for such work. Clause 12 : DELETED

Clause 12-A : DELETED Clause 12-B : DELETED Clause 13 : Execution as per specifications (1) The contractor shall execute the whole and every part of the work in the most substantial and workman like manner both as regards materials and in other respects in strict accordance with specifications. The contractor shall also conform exactly, fully and faithfully to the drawings and instructions in writing for the work signed by the engineer in charge. The design and the drawings shall be lodged in office of the client / engineer in-charge to which the contractor shall be entitled to have access for the purpose of inspection at such office during working hours. Where the instructions referred to above are not contained in separate letters addressed to the contractor, the same shall be recorded in the work order book, which shall be maintained and kept on the site of the work. The contractor shall be required to sign such entries in the work order book in token of having noted the instructions. However, if the contractor fails to sign the work order book for any reason whatsoever, the entry of the instructions, in the work order book shall be deemed to be under notice to him of the said instructions.

31

(2)

The work order book shall be open for inspection to the contractor on the site of the work during office hours. The contractor will be entitled to receive one copy of the accepted tender alongwith the work order, free of cost and will also be entitled to receive, three sets of contract drawing and working drawings according to the progress of work, as and when needed free of cost. The several documents forming the contract are essential parts of the contract and a requirement occurring in one, is binding as though occurring in one, is binding as through occurring in all. They are intended to be mutually explanatory and complementary and to describe and provide for complete work.

(3)

In the event of any discrepancy in the several documents forming the contract or in any one document, the following order of procedure should apply : (a) Dimension and quantities : (i) Drawings (ii) Schedule ­ B of the tender form (iii) specifications on drawings, figured dimensions, unless obviously incorrect will be followed in preference to scaled dimensions. Description : (i) Schedule ­ B of the Tender form (Price Bid), (ii) Drawings (iii) Specifications.

(b)

In the case of defective description of ambiguity, the engineer in charge is entitled to issue further instruction directing in what manner the work is to be carried out. The contractor cannot take any advantage of any apparent error or omission in drawings or specifications and the engineer in charge shall be entitled to make corrections and interpretations as necessary to fulfill the plans and specifications. Clause 14 : Power to make alterations (1) The engineer in charge shall have power to make any alteration in or additions to the original specifications, drawings, designs and instructions that may appear to him to be necessary or advisable during the progress of the work, and the contractor shall be bound to carry out the work in accordance with any instruction in this connection which may be given to him in writing signed by the engineer in charge and such alternations shall not invalidate the contract and any additional work, which the contractor may be directed to do in the manner above specified as part of the work, shall be carried out by the contractor on the same conations in all respects on which he agreed to do the main work, and at the same rates as are specified in the tender for the main work. (2) Except that when the quantity of any item exceeds the quantity in the tender by more than 30% the contractor will paid for the quantity in excess of 30% at the rate entered in the SOR of the year of Vadodara R & B division, during which the excess in quantity is first executed and for the material consumed in excess quantity, the rate for the materials to be charged would be the basic rate taken in to account for fixing the rate for SOR above instead of rate stipulated in Schedule ­ A.

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(3) (i)

(ii)

(iii) (4)

If the additional or altered work includes any class of work for which no rate is specified in this contract, then such class of work shall be carried out. At rate of derived from the item within the contract which is comparable to the one involving additional or altered class of work. Where there are more than one comparable items, the item of the contract, which is nearest in comparison with regard to class or classes of the work involved shall be selected and the decision of the engineer in charge as to the nearest comparable item shall final and binding on the contractor. If the rate can not be derived in accordance with (i) above, such class of work shall be carried out at the rate entered in schedule of rate of the Vadodara R & B Division for the year in which the tender was received, increased or decreased by the percentage by which the tender amount is more or less as compared to the arrived at rates in the "Schedule of Rates" of the Division in the year in which the tender was received. If the Schedule of Rates of the Division does not contain all the items, the percentage increased or decreased of the tender shall be calculated considering such items which are included in the schedule of Rate of the division for the year and for materials consumed on such items, the rate to be charged would be the basic rate taken into account for fixing the rate in SOR referred to above instead of the rate. If it is not possible arrive at the rates from (i) & (ii) above, such class of work shall be carried out at the rate decided by the competent authorities. If the additional or altered work, for which no rate is entered "Schedule of Rates" of the division is ordered to be carried out before the rate is agreed upon then the contractor shall within seven days of the date of receipt by him of the order to carry out the work, inform the Engineer in charge of the rate which it is his intention to charge for such class of work, if the Engineer in charge does not agree to this rate he shall, by notice in writing, be at liberty to cancel his order to carry out such class of work and arrange to carry it out in such manner as he may consider it advisable, provided always that if the contractor shall commence work or incur any expenditure in regard thereof, before the rates shall have been determined as lastly herein before mention, then in such cases he shall only being entitled to be paid in respect of the work carried out or expenditure incurred by him prior to the date of the determination of the rate as aforesaid according such rate or rates as shall be fixed by the Engineer in charge. In the event of the dispute the decision of the client shall be final. Where, however, the work is to be executed according to the designs, drawing and specifications recommended by the contractor and accepted by the competent authority, the alternations above referred to shall be within the scope of such designs, drawings and specifications appended to the tenders. The time limit for the completion of the work shall be extended in the proportion that the increase in the cost occasioned by alterations bears to the cost of the original contract work and the certificate of the Engineer-in-Charge as to such proportion shall be final and conclusive. Deleted

(5)

33

Clause 15 : No claim for any payment of the compensation for change or restriction of work: If at any time after the execution of the contract documents, the engineer in charge shall for any reason whatsoever, required the whole or part of the work, as specified in the tender, be stopped any period or shall not require the whole or the part of the work to be carried out at all or to be carried out by the contractor, he shall give notice in writing of the fact to the contractor who shall thereupon suspend or stop the work totally or partially, as the case may be. In any such case, except as provided hereunder, the contractor shall have no claim to any payment or compensation whatsoever, except as provided hereunder on account of any profit or advantage which he might have derived from the execution of the work in full but which he did not so derived, inconsequence of the full amount of the work not having been carried out or on account of any loss that he may be put to on account of materials purchased or agreed to be purchased or for unemployment of the labour required by him. He shall not have any claim for compensation by reason of any alterations having been made in the original specifications, drawings, designs and instructions which may involved any curtailment of the work as originally contemplated. (i) However, the contractor will be entitled for compensation or loss if any on the date of notice, or the purchase material or for the contract executed for the material to be purchased for such work. Such compensation will be paid only for actual loss for material, if such materials so purchased or agreed to purchase in of required quantity / quality / and was purchased / contracted to be purchased only for the same work. But no compensation shall be granted to contractor on material for which advance has been given to contractor by client. The amount of loss for such claim will be decided by the Engineer-in-Charge. The contractor also will be entitled for compensation of unemployed labourers, for a 7 days from the date of notice provided that in that opinion of Engineer-in-Charge, such labourers were working for 7 days prior to the notice and could not be in a position to get employment elsewhere within 7 days from the date of such notice. A contractor should try employee such unemployed labourer at other places from the date of such notice. In case the contractor does not agree with the decision of Engineer-in-Charge regarding the amount of compensation of loss it will be open for the contractor to appeal to Municipal Commissioner, VMSS within a one month from the date of knowledge of such decision. In such case, the decision of Municipal Commissioner, VMSS will be final and binding to the contractor. The contractor shall not be entitled for loss of any expected profit of such work. However, materials have already been purchased or agreed to be purchased by the contractor before receipt by him of the said notice, the contractor shall be paid for such materials at the rate determined by the Engineer in charge provided they are not in excess of requirements and are of approved quality and or shall be compensated for the loss, if any that he may be put in respect agreed to be purchased by him, the amount of such compensation to be determined by the Engineer in charge whose decision shall be final.

34

(ii)

If the contractor suffers any loss on account of his having to pay labor charges during the period during which the stoppage of work has been ordered under this clause the contractor shall, on application, be entitled to such compensation on account of payment of labor charges, as the engineer in charge, whose decision, shall be final may consider reasonable, provided the contractor shall not be entitled to any compensation on account of payment of the labor charges if in the opinion of the Engineer in charge, the labor could have been employed by the contractor elsewhere for the whole or part of the period during which the stoppage of the work has been ordered as aforesaid. Clause 15-A : DELETED Clause 16 : Time limit for unforeseen claims The contractor shall not be entitled to any compensation from client on any account work allowed by the contractor. In such cases, the contractor shall have submit to claim in writing to the Engineer in charge within one month of the cause of such claim occurring. Clause 17 : Action and compensation in case of bad work If, at any time before the expiry of defects liability period as detailed in clause 17A it shall appear Engineer in charge or his subordinate in charge of the work, that any work has been executed, with unsound, imperfect of unskilled workmanship or with materials of inferior quality, or that any materials or articles provided by him for execution of the work are unsound, or of a quality inferior to that contracted for or otherwise not in accordance with the contract, it shall be lawful for Engineer in charge to intimate this fact in writing to the contractor and then notwithstanding the fact that work, materials or articles complained of may have been passed, certified or rectified or remove or reconstruct the work so specified in whole or in part as the case may required, or if so required, shall remove the materials or articles so specified in whole or in part and provide other proper and suitable materials or articles at his own charge and cost and in the event of his failing to do so within a period to be specified by the Engineer-in-Charge in the writing aforesaid, the contractor shall be liable to pay compensation at the rate of 1% on the amount of the estimate of the rectification for every day but exceeding 10 days during which the failure so continues and in the event of such failure as aforesaid continuing beyond 10 days the Engineer-in-Charge may rectify or remove and execute the work or remove and replace the material complained of as the case may be at the risk and expense in all respect of the contractor. Should the Engineer-in-Charge consider that any such inferior work or material as described above may be accepted or made use of, it shall be within discretion to accept the same at such reduced rate as he may fix therefore. However, the contractor shall be responsible for normal maintenance of the work till the final bill for the work is prepared by the Engineer-in-Charge suitable materials or articles so specified and provide other proper suitable materials or articles at his own charge to be specified by the Engineer in charge in the written intimation aforesaid, the contractor shall be liable to pay compensation at the rate of one percent on the amount of the estimate of the rectification for everyday not exceeding ten days during

35

which the failure so continuous and in the event of any such failure as aforesaid continuing beyond ten day, the Engineer in charge may rectify or remove, and re execute the work or remove and replace the materials or articles complained of, as the case may be, at the risk and expenses in all respects of the contractor. Should the Engineer in charge consider that any such inferior work or materials as described above may be accepted or made use of, it shall be with in his discretion to accept the same at such reduced rates as he may fix therefore . However, the contractor shall be responsible for the normal maintenance of the work till the final bill for the work is prepared by the Engineer in charge and physical position is handed over to the client. Clause 17 A : Defect liability period The contractor shall be responsible to make good and remedy at his own expense any defect which may develop or may be noticed before the period mentioned hereunder from the certified date of completion. The Engineer-in-Charge shall give the contractor a notice in writing about the defects and the contract shall make good the same within 15 days of receipt of the notice. In the case of failure on the part of the contractor, the Engineer-in-Charge may rectify or remove or re-execute the work at the risk and the cost of the contractor. The Engineer-in-Charge shall be entitled to appropriate the whole or any part of the risk and cost security deposit towards the expenses, if any, incurred by him in rectification, removal or re-execution. The Defects Liability period shall be for major projects costing more than Rs. 1 crore, the period shall be 6 months from the certified date of completion which should include one monsoon. Clause 18 : be present Work to be open to inspections, contractor or responsible agent to

All works under or in course of execution or executed in pursuance of the contract shall, at all times be open to the inspection and supervision of the Engineer in charge and his subordinate and the contractor shall at all time during the usual working hours and all other time at which reasonable notice of the intimation of the Engineer-incharge or his subordinate to visit the works shall have been given to the contractor either himself be present to receive order and instructions or have a responsible agent duly accredited in writing, present for that purpose. Orders given to the contractor's duly authorized agent shall be considered to have the same force and effect as if they had been given to the contractor himself. Employment of a qualified site engineer by contractor : The contractor shall employ full time technically qualified staff during the execution of this work as under : (1) Two Graduate Civil Engineers & Three Diploma Civil Engineers. The Engineer employed must have sufficient experience to handle the work independently. Such an Engineer shall have to stay at the site of work and he shall not be entrusted with any other duty except of this work. The site

36

incharge/Resident Engineer shall have a Bachelors Degree in Civil Engineering and have a minimum experience of 10 years. In case, the contractor or a partner of the contractor firm himself is a civil graduate Engineer, employment of a separate Engineer will not be necessary provided that the Engineer partner himself attends the execution of the work on site. Clause 19 : Notice to be given before work is covered up :

The contractor shall give not less than five days, notice in writing to the Engineer in charge or to his subordinate in charge of the work before covering up or otherwise placing beyond the reach of measurement, any work in order that the same may be measured and correct dimensions thereof taken before the same is so covered up or placed beyond reach of measurement and if any work shall be covered up or placed beyond the reach of measurement without such notice having been given or consent obtained. The same shall be uncovered at the contractor's expenses and in default thereof no payment or allowance shall be made for such work or for the materials, with which the same was executed. Clause 20 : If the contractor or his workmen, or servant shall break, deface, injure or destroy any part of the building, or the work in question in / or which they may be working or any building road, fence, enclosure of grass-land or cultivated ground contigous to the premises on which the work or any part thereof is being executed or if any damage shall be done to work from any cause whatsoever, before damage occurred / caused due to normal flood or rain or if any imperfection becomes apparent in it within twelve months from the grant of a certificate of completion, final or otherwise by Engineer-in-charge, the contractors shall make good the same at his own expenses or in default the Engineer-in-charge may cause the same to be made good by other contractor and deduct the expenses (of which the certificate of the Engineer-in-charge shall be final) from any sums that may thereafter become due to the contractor or from his security deposit or the proceeds of sale of his plants, tools, machinery, surplus materials etc. or a sufficient portion thereof. Clause 20-A : · Neither party shall be liable to the other for any loss or damage occasioned by or arising out of acts of God such as "unprecedented floods, volcanic eruption, earthquake or other convulsion of nature; and other acts, such as but not restricted to general strike invasion, the act of foreign countries, hostilities or war like operations before or after declaration of war, rebellion, military or usurped power which prevent performance of the contract and which could not have been foreseen or avoided by a prudent persons. "Unprecedented flood" means the flood crossing the high flood level of the past year(s) which is on the available record.

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·

Clause 21 : Contractor to supply plant, ladders, scaffolding etc., and is liable for damages arising from non-Provision of lights, fencing etc. The contractor shall supply at his own cost all materials, plants, tools, appliances, implements, ladders, cordage, tackle, scaffolding and any temporary works which may be required for the proper execution of the work whether in the original, altered or substituted form and whether included in the specifications, or other documents forming part of the contract or referred to in these conditions or not and which may be necessary for the purpose of satisfying or complying with requirements of the Engineer-in-charge as to any matter or to which under these conditions he is entitled to be satisfied or which he is entitled to require together with carriage therefore to and from the work. The contractor shall also supply without charge, the requisite number of persons with the means and material, necessary for the purpose of setting out works and counting, weighing and assisting in taking measurements or examination at any time from time to time of the work or the materials. Failing this, the same may be provided by the Engineer-in-charge at the expense of the contractor money and expenses may be deducted from any dues to the contractor under the contract or from his security deposit, or from proceeds of sale thereof or of a sufficient portion thereof. The contractor shall provide all necessary fencing and lights required to protect the public from accident and shall also be bound to bear expenses of defense of every suit, action or other legal proceedings of law that may be brought by any person for injury sustained owing to neglect of the above precautions and to pay damages and costs which may be awarded in any such suit action or proceedings to any such person or which may, with the consent of the contractor be paid in compromising any claim by any such person. Clause 21-A :The contractor shall provide suitable scaffolds and working platforms, gangways and stairways and shall comply with the following regulations in connection therewith. (a) Suitable scaffolds shall be provided for workmen for all works that can not be safely done from a ladder or by other means. A scaffold shall not be constructed taken down or substantially altered except (i) Under the supervision of competent and responsible person; appointed by contractor and by competent workers possessing adequate experience in this kind of work.

(b)

(c)

All scaffolds and appliances connected therewith and all ladders shall ­ (i) (ii) (iii) Be of sound material Be of adequate strength having regard to the loads and strains to which they will be subjected to Be maintained in proper condition.

(d)

Scaffold shall be as constructed that no part thereof can be displaced in consequence of normal use.

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(e)

Scaffold shall not be overloaded and so far as practicable the load shall be evenly distributed. Before installing the lifting gear on scaffolds, special precaution shall be taken \to ensure the strength and stability of the scaffolds. Scaffolds shall be inspected periodically by a competent person. Before allowing a scaffold to be used by his workmen, the contract shall, whether the scaffold has been erected by his workmen or not, take steps to ensure that it complies fully with the regulation herein specified. Working platform, gangways shall(i) (ii) be so constructed that no part thereof can sag unduly or unequally be constructed and maintained having regard to the prevailing conditions as to reduce as far as practicable risk of persons tripling or slipping and be kept free from unnecessary obstruction.

(f)

(g) (h)

(i)

(iii) (j)

n the case of working platforms, gangways working places and stairways at a height exceeding two meters ­ (i) (ii) Every working platform and every gangway shall be closely boarded unless other adequate measures are taken to ensure safety, Every working platform and every gangway shall have adequate width, and

(iii) (k)

Every working platform, gangway, working place and stairway shall be suitably fenced. Every opening in the floor of a building or in a working platform shall, except for the time and to the extent required to allow the access of persons or the transport or shifting of materials be provided with suitable means to prevent the fall of persons or material. When persons are employed on a roof where there is danger of falling from a height exceeding three meters, suitable precaution shall be taken to prevent the fall of persons or material. Suitable precautions shall be taken to prevent persons being struck by articles which might fall from scaffold or other working places. Safe means of access shall be provided to all working platforms and other working places.

(l)

(m)

(n)

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Clause 21-B:The contractor shall comply with the regards the Hoisting Appliances to be used by him ­ (a)

following regulations as

Hoisting machines and tackle including their attachments, anchorage and supports shall :(i) (ii) Be of good mechanical construction, sound material and adequate strength and free from patent defect, and Be kept in good repair and in working order.

(b)

Every rope used in hoisting or lowering the materials or as means of suspension shall be of suitable quality and adequate strength and free from patent defect. Hoisting machines and tackle shall be examined and adequately tested after erection on the site and before used and be re-examined in position at intervals to be prescribed by Engineer-in-charge. Every chain, ring, hook, shackle, swivel and pulley block used in hoisting or lowering materials or as a means of suspension shall be periodically examined. Every crane driver or hoisting appliance operator shall be properly qualified. No person who is below age of 15 years shall be in control of any hoisting machine, including any scaffolds nor shall he give signals to the operator. In the case of every hoisting machine and of every chain, ring, hook, shackle, swivel and pulley block used in hoisting or lowering of as a means of suspension, the safe working load shall be ascertained by adequate means. Every hoisting machine and all gears referred to in preceding regulations shall be plainly marked with the safe working load. In the case of hoisting machine having a variable safe working load and conditions under which it is applicable shall be clearly indicated. No part of any hoisting machine or gear referred to in regulation (g) above, shall be loaded beyond the safe of working load except for the purpose of testing Motors, gears, transmissions, electric wiring and other dangerous parts of hoisting appliance shall be provided with sufficient safeguards. Hoisting appliances shall be provided with such means as will reduce to a minimum the risk of the accidental descent of the load. Adequate precautions shall be taken to reduce to minimum the risk of any part of a suspended load becoming accidentally displaced.

(c)

(d)

(e) (f)

(g)

(h)

(i) (j)

(k)

(l)

(m)

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Clause 22 : Measures for prevention of fire : The contractor shall not set fire to any standing jungle, trees, bushwood or grass without a written permit from the Engineer-in-charge. When such permit is given and also in all cases when destroying, cut or dug up trees, bushwood, grass etc. by fire, the contractor shall take necessary measures to prevent such fire spreading to or otherwise damaging surrounding property. Clause 23 : Liability of contractors for any damages done in or outside work area : Compensation for all damage done intentionally or unintentionally by contractor's laborers whether in or beyond limits of client's property including any damage caused by the spreading of fire mentioned in Clause 22, shall be estimated by the Engineerin-charge, or such other officer as he may appointed and the estimates of the Engineer-in-charge, subject to the decision of competent authority, shall be final and the contractor shall be bound to pay the amount of the assessed compensation on demand failing which, the same will be recovered from the contractor as damages in the manner prescribed in Clause ­ 1 or deducted by the Engineer-in-charge from any sums that may be due or become due from client to the contractor under this contract or otherwise. The contractor shall bear the expenses of defending any action or other legal proceeding that may be brought by any person for injury sustained by him owing to neglect of precautions to prevent the spread of the fire and he shall also pay any damages and cost that may be awarded by the court in consequence. Clause 24 : DELETED Clause 25 :DELETED Clause 26 : Work not to be sublet, contract may be rescinded and security deposit forfeited for subletting it without approval or for bribing a public officer or if contractor becomes insolvent : The contract shall not be assigned or sublet without the written approval of the Engineer-in-charge. And if the contractor shall assign or sublet his contract or attempt to do so or become insolvent or commence any proceeding to get himself adjudicated an insolvent or make any compromisation with his creditors, or attempt to do so, the Engineer-in-charge may, by notice in writing, rescind the contract. Also if any bribe, gratuity, gift, loan perquisite reward or advantage, pecuniary or otherwise, shall either directly or indirectly be given, promised or offered by the contractor, or any of his servants or agents to any public officer or person in the employ of client, in any way relating to his office or employment, or it any such officer or person shall become in any way directly or indirectly interested in the contract, the Engineer-in-charge may there upon by notice in writing rescind the contract. In the event of contract being rescinded, the security deposit of the contractor shall there upon stand forfeited and be

41

absolutely at the disposal of client and the same consequence shall ensure as if the contract had been rescinded under Clause ­ 3 hereof and in addition the contractor shall not be entitled to recover or be paid for any work therefore actually performed under the contract. Clause 27 : Sum payable by way of compensation to be considered as reasonable compensation without reference to actual loss : All sums payable by the contractor by way of compensation under any of these conditions shall be considered as a reasonable compensation to be applied to the use of client without reference to the actual loss damage sustained and whether any damage has or had not been sustained. Clause 28 : Change in the constitution of firm to be notified : In the case of a tender by partners, change if any, in constitution of a firm shall be forthwith notified by the contractor to the Engineer-in-charge for his information. Clause 29 : Works to be under directions of client / engineer-in-charge. All works to be executed under the contract shall be executed under the direction and subject to be approval in all respects of the client / Engineer-in-charge for the time being, who shall be entitled to direct at what points or points and in what manner they are to be commenced and from time to time carried on. Clause 30 : Dispute to be referred to Arbitrator : (1) The dispute relating to this contract, so far as they relate to any of the following matters, whether such disputes arise during the progress of the work or after the completion, or abandonment thereof, shall be referred an independent Arbitrator by VMSS as far possible in consultation with the agency, if it is necessary and such disputes shall be settled in accordance with Arbitration and conciliation Act, 1996. (i) The rates of payment under clause 5-A for any tools, materials and stores, in or upon the works of the site thereof or belonging to the contractor or procured by him and intended to be used for execution of the work or any part thereof possession of which may have been taken by the Engineer-in-charge under the said clause ­ 5. (ii) The reduction in rates made by the Engineer-in-charge under clause 9 from the items of works not accepted as completed fully in accordance with the sanctioned specifications. The rate of payment for any class of work which is included in the additional or altered work carried out by the contractor in accordance with the instructions of the Engineer-in-charge under clause 14 and the rates for which is to be determined under the said clause 14.

(iii)

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(iv)

The rates of payment for materials already purchased or agreed to be purchased by the contractor before receipt of notice given by the Engineer-in-charge under clause 15 and/or the amount of compensation payable to the contractor under the said clause for loss in respect of such materials. The amount of compensation which the contractor shall be liable to pay under clause 17 in the event of his failure to rectify, remove or reconstruct the work within the period specified in the written intimation or the amount of expenses incurred by the Engineer-incharge under the said clause 17 in rectifying, removing or re-executing the work or in removing and replacing the materials or articles complained of. The reduction of rates as may be fixed by the Engineer-in-charge under clause 17 for the inferior work or materials as accepted or made use of. The amount of compensation payable by the contractor for damages as estimates and assessed under clause 23. The amount payable to the contractor for the work carried out under clause 33 in accordance with the instructions and the requirements of the engineer-in-charge in a case where there are no specifications.

(v)

(vi)

(vii)

(viii)

(2)

The awards declared by the arbitrator shall be speaking award giving reasons and calculations to every item of claims. The decision will have to be implemented by all the concerned. In case of dispute leading to the contractor or VADODARA MAHANAGAR SEVA SADAN approaching on Court of Law. It shall be within those juridication the site of work is situated. The reference to arbitration proceeding under this clause shall not : (i) Affect the right of the Engineer-in-charge under clause 5 to take possession of all or any tools, plants, materials and stores in or upon the works of site thereof belonging to the contractor or procured by him and intended to be used for the execution of the work or any part thereof. (ii) Preclude the engineer-in-charge from utilising the materials purchased by the contractor in any work or from removing such materials to other places, during the period the work is stopped or suspended in purchase of notice given to the contractor under clause 15. (iii) Entitle the contractor to stop the progress of the work or the carrying out the additional or altered work in accordance with the provisions of clause 14 or as the case may be, of clause 33. Clause 31 : DELETED

(3)

(4)

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Clause 32 : Lump-sum in estimates : When the estimates on which a tender is made includes lump-sum in respect of part of the work, the contractor shall be entitled to payment in respect of these items of work involved, or the part of the work in question at the same rates as are payable under this contract for such items, or if the part of the work in question is not in the opinion of Engineer - in ­ charge capable of measurement, the Engineer in charge may, at his discretion pay the lump sum amount entered in the estimate and the certificate in writing of the Engineer - in ­ charge shall be final and conclusive against the contractor with regard to any sum or sums payable to him under the provision of this clause. Clause 33 : Action where no specifications : In the case of any clause of work for which there is no such specification, such work shall be carried out in accordance with the specifications and in the event of there being no such specifications, then in such case, the work shall be carried out in all respects in accordance with instructions and requirements of the Engineer in charge. Clause 34 : Definition of work : The expression `work `or works where used in these conditions shall, unless there be something in the subject of context repungent to such construction be construed to mean the work, or the works contracted to be executed under or in virtue of the contract, whether temporary or permanent, and whether original, altered, substituted or additional Clause 35 : Contractor's percentage whether applied to net or gross amount of the bill : The percentage referred to in the tender shall be deducted from / added to the gross amount of the bill. However, the rebate if offered shall be applicable to each rate offered. Clause 36 : Non refund of quarry fees and royalties The contractor shall pay the royalty, all fees including octroi, taxes to the competent authority / local body as per rules. The contractor shall furnish quarterly statement showing quantity of quarried materials, from whom purchased. (with full address of the seller) and copies of bills for purchase to the District Officer of the Mining and Geology Department or authority competent to levy royalty in the area of work. Copy of such statement shall be furnished to the Engineer - in ­ charge also. Contractor shall also furnish such additional information as regards royalty payment to client and the royalty authority. The royalty charges paid shall be borne by the contractor and no refund or reimbursement of the same shall be made by the client.

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Clause 37 : Compensation under the workmen's compensation Act The contractor shall be responsible for and shall pay compensation to his workmen payable under the workmen's compensation act, 1923 (VIII of 1923) or any statutory modification there of (here in after called the said act) for injuries caused to the workmen. If such compensation is paid by client as principal under subsection 12(1) of the said Act. On behalf of the Contractor, it shall be recoverable by client from the contractor under sub-section 12 (2) of the said section.. Such compensation shall be recovered in the manner laid down in clause 1 above. Clause 37-A: The contractor shall be responsible for and shall pay the expenses of providing medical aid to any workmen who may suffer a bodily injury as a result of an accident. If such expenses are incurred by client, the same shall be recoverable from the Contractor forthwith and be deducted, without prejudice to any other remedy of client from any amount due or that may become due to the contractor. Clause 37-B: The Contractor shall provide all necessary personal safety equipment and first aid apparatus available for the use of the persons employed on the site and shall maintain the same in suitable condition for immediate use at any time and shall comply with the following regulations in connection therewith : (a) The workers shall be required to use the equipment so provided by the Contractor and Contractor shall take adequate steps to ensure proper use of the equipment by those concerned. When work is carried on in proximity to any place where there is a risk of drowning, all necessary equipment shall be provided and kept ready for use and all necessary steps shall be taken for the prompt rescue of any person, in danger. Adequate provision shall be made for prompt first aid treatment of all injuries likely to be sustained during the course of the work.

(b)

(c)

Clause 38 : The quantities shown in the tender are approximate and no claim shall be entertained for quantities of work executed being either more or less than those entered in the tender. In the case of increase in the quantities by more than 30% the new rate will be paid to the Contractor for the quantities in excess of 30%. The rates for the increased quantities as aforesaid will be fixed in the manner specified in Caluse-14. Clause 39 : Employment of famine or other labour : The Contractor shall employ any famine convict or other labour of particular kind or class, if ordered in writing to do so by the Engineer - in ­ charge

45

Clause 40 : Claim for compensation for delay in starting the work : No compensation shall be allowed for any delay caused in the starting of the work, on account of delay in making available the full site of land at a time and in the case of delay in clearance of the site for any other reason or for any other delay whatsoever for not starting the work. Clause 41 : Claim for compensation for delay in the execution of work : No claim for compensation shall be allowed for any delay in execution of the work on account of water standing in borrow pits or compartment if any. It will be contractor duty to ascertain utility services mainly the water mains before physically starting the execution of open foundations to obviate confrontation in execution of foundations for piers and return walls etc. and ensure safety of water mains. The rates of excavation are inclusive of hard or cracked soil, excavation in mud, sub-soil water or water standing in borrow pits under pinning and protecting water mains by shoring strutting rigorously and no claim for an extra rate shall be entertained unless otherwise expressly specified. Clause 42 : Entering upon commencing any portion or work : The Contractor shall not enter upon or commence any portion or work except with the written authority and instruction of the Engineer - in ­ charge or of his subordinate in charge of the work, failing such Authority, the Contractor shall have no claim to ask for measurement of or payment for work. Clause 43 : Minimum age of person employed No contractor shall employ any person who is under the age of 15 years. Clause 43-A: The employment of donkeys and or other animals and the payment of fair wages : (i) For asphalt works as far as possible, only the adult person should be employed by the Contractor or the contracted works as the case may be. If the adult persons are not available, then the children below the age of (15 years) should not be employed under any circumstances. No Contractor shall employ donkeys or other animals with breaching of string or thin rope. The breaching must be at least three inches wide and should be of tape (Nawar). No animals suffering from sores, lameness or emaciation or which is immature shall be employed on the work. The Engineer - in ­ charge or his agent is authorized to remove from the work any person or animal found working which does not satisfy these conditions and no responsibility shall be accepted by client for any delay caused in the completion of work by such removal.

(ii)

(iii) (iv)

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(v)

The Contractor shall pay fair and reasonable wages to the workmen employed by him in contract undertaken by him. In the event of any dispute arising between the Contractor and his workmen on the grounds that the wages paid are not fair and reasonable as per Govt. of Gujarat Rules, the dispute shall be referred to without delay to the Engineer - in ­ charge who shall decide the same. The decision of the Engineer - in ­ charge shall be conclusive and binding on the Contractor, but such decision shall not in any way affect the conditions in the contract regarding the payment to be made by client at the sanctioned tender rates. The Contractor shall provide drinking water facilities to the workers / laborers employed on clients works. Amenities relating to sanitation shall also be provided to the workers / laborers employed on works (in urban areas). If the Contractor fails to comply with these provisions, the Engineer - in ­ charge shall give notice in writing and if the Contractor does not provide this facility to the worker / laborers within a period of ten days from the notice in writing, the Engineer - in ­ charge shall thereupon make the arrangement for drinking water at the cost of the Contractor. The Contractor shall provide the amenity of proper shade and shelter to the workers / laborers and their children on works as soon as the work starts. If the Contractor fails to provide shed and shelter the Engineer - in ­ charge shall provide the same at the cost of Contractor.

(vi)

(vii)

Clause 44 : Method of Payment : Payment to Contractor shall be made by cheque drawn on any bank at Vadodara, provided the amount exceeds Rs. 10. Amount not exceeding Rs. 10 will be paid in cash. Clause 44-A DELETED Clause 40 : DELETED Clause 46 : Employment of scarcity labor If Government declares a state of scarcity or famine to exist in any village situated within 16 kilometers of the work, the Contractor shall employ upon such parts of the work, as are suitable for unskilled labor, any persons certified to him by the Engineer - in ­ charge or by any persons to whom, the Engineer - in ­ charge may have delegated this duty in writing to be in need of relief and shall be bound to pay to such persons, wages not below the minimum which Government of Gujarat may have fixed on his behalf. Dispute which may arise in connection with implementation of this clause shall be decided by the Engineer - in ­ charge whose decision shall be final and binding on the Contractor. Clause 47 : DELETED

47

Clause 48 : The rates to be quoted by the Contractor must be inclusive of sales tax, octroies, contract tax, insurance or any other tax in force. No extra payment on this account will be made to the Contractor. Clause 49 : The Contractor should as far as possible, obtain his requirement of laborers skilled and unskilled, from the nearest employment exchanges so as to utilize the local employment potential. If there are no local employment exchanges or such exchanges are not able to provide the required labor locally, suitable laborers should be utilized to the maximum extent possible. Clause 50 : Fair Wages : If a contractor fails to pay within `7' (Seven) days to the laborer(s) / worker(s), the minimum wages prescribed by the Government of Gujarat under the minimum wages act, 1948 as in force from time to time, the Engineer - in ­ charge shall be at liberty to deduct the amount payable to the labor / worker from his (Contractor's) bills or deposit(s) payable by the Contractor after making due inquiries and establishing the claims of the laborer(s) worker(s). The Contractor shall not be entitled to any payment of compensation on account of any loss that the contractor may have to incur on account of the action as aforesaid. Before the action as aforesaid, if enforced, a notice in writing to the Contractor shall be issued by the Engineer - in ­ charge to pay the wages as per minimum wages act in force at the relevant time. If Contractor does not act as aforesaid within seven days then the action contemplated as above shall be taken against him. Clause 51 : DELETED Clause 52 : List of Machinery The Contractors shall also give a list of machineries in their possession and which they propose to use on the work. Clause 53 : DELETED Clause 54 : Local labor on normal rates The Contractor shall have to engage local labor and persons seeking employment where available on normal rate.

48

Clause 55 : Rent will be recovered from the contractor for the land given to them for stacking materials as well as for construction of temporary hutments etc. Land measuring Charges 1. 2. 3. 4. One hectare or less More than 1 hectare & upto 2 hectares More than 2 hectare & upto 3 hectares More than 3 hectare & upto 4 hectares Rs. 5 per month Rs. 10 per month Rs. 15 per month Rs. 20 per month

Clause 56 : The Contractor shall employ only such labor who shall produce a valid certificate of having been vaccinated against small pox within a period of last three years. Clause 57 : Huts

The Contractor shall build sufficient number of huts on a suitable plot of land for the labourers according to the following specifications. 1. 2. Hut of bamboos and grass may be constructed. A good site shall be selected high ground removed from jungle, but well provided with trees shall be chosen wherever it is available. The neighbourhood of rank jungle, grass or weeds should particularly be avoided. Camps should not be established close to large cutting of earth-work or heavily built up areas. The lines of huts shall have open spaces of atleast 10 m. between rows. When a good natural site cannot be procured. Particular attention should be given to the drainage. There should be no over crowding. Floor space at the rate 2.8 sq.m. per head shall be provided. Care should be taken to see that the huts are kept clean and in good order. The Contractor must find out his own land for above purpose in addition to that required for office store etc. and if he wants government land, he should apply for it to the authority and pay assessment of rent etc. for it. Drinking water : The Contractor shall, as far as possible, provide and adequate supply of chlorinated pure potable drinking water for the use of laborers. This provision shall be at the rate of not less than 4.5 litres per head, no provision need be made where there is a suitable nalla, river or well within 0.4 Km. of the camp. However, arrangement should, as far as possible, be made to chlorinate water by chlorined tablets before it is allowed for drinking purpose. (3) The Contractor shall construct semi-permanent latrines for the use of the laborers on the following scale, namely :

3.

4.

5.

(2)

49

(A) Where females are employed, there shall be at least one latrine for every 25 females. (B) Where males are employed, there shall be at least one latrine for every 25 males. Provided that where the number of males or females exceed 100, it shall be sufficient if there is one latrine for every 25 males or females as the case may be, up to the first 100 and one for every 50 thereafter. (4) Privacy in latrines : Every latrine shall be under cover and so partitioned off as to secure privacy and shall have a proper door and fastenings. (5) Notice to be displayed outside latrines and urinals (1) Where workers of both sexes are employed, there shall be displayed outside each block of latrine and urinal a notice in the language understood by the majority of the workers "For Men Only" "For Women Only" as the case may be. The notice shall also bear the figures of a man or of a woman, as the case may be.

(2)

(6)

Urinals : There shall be atleast one urinal for male / female workers upto 50 employed at a time. Provided that where the number of male or female workmen a the case may be, exceeds 500, it shall be sufficient if there is one urinal for every 50 males females up to the first 500 and one for every 100 males or females or part thereof.

(7)

Latrines and urinals to be accessible : (1) The latrines and urinals shall be conveniently situated and accessible to workers at all times at the establishment.

(2) (i) The latrines and urinals shall be adequately lighted and shall be maintained in a clean and sanitary condition at all times. (ii) Latrines and urinals other than those connected with a flush sewage system shall comply with the requirements of the Public Health authorities.

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(8)

Water for latrines and urinals : Water shall be provided by means of pipes or tanks, so also be conveniently accessible in or near the laterines and urinals.

(9)

Bathing and washing place : (1) (2) (3) (4) The contractor shall construct a sufficient number of bathing places, every unit of 20 persons being provided with a separate bathing place. Washing places should also be provided for the purpose of washing clothes. Every unit of 30 persons shall have at least one washing place. Such bathing and washing places should be suitably screened and separate places provided for male and female workers. Such facilities shall be conveniently accessible and shall be kept in clean and hygienic condition.

(10)

Drainage : The contractor shall make sufficient arrangements for draining away the sewerage water as well as water from the bathing and washing places and shall dispose of this waste water in such a way as not to cause nuisance. The contractor should obtain permission from the Gujarat Water Pollution Control Board, Gandhinagar if water is so be drained in river or near the well. The contractor would put material oil once in week in stagnant water round about the residence.

(11) Medical facilities : The contractor shall engage a medical officer with a travelling dispensary for a camp having 500 or more persons if there is no Government or other private dispensary situated within 6 km. From the camp. (12) Conservancy and cleanliness : The contractor shall provide the necessary staff for effecting the satisfactory conservancy and cleanliness of the camp to the satisfaction of the Engineer in charge. At least one sweeper per 200 persons should be engaged. Conservancy staff should dump refuge in compost pit, away from the labor camp. (13) Health provision : The District Health officer of the District or the Dy. Director of health services shall be consulted before opening a labor camp and his instructions on matters such as the water supply, sanitary convenience, the camp ­ side accommodation and food supply shall be followed by the contractor.

51

(14) Precautions against epidemic : (A) The authorities in charge of the colonies should get the laborers inoculated against cholera and plague and vaccinated against smallpox at the time of recruitment, if they are not inoculated or vaccinated within 6 months or 3 years respectively, prior to the date of recruitment. When, in any labor camp, there is an outbreak of an epidemic disease or is threatened with such an outbreak, the authorities in charge of the labor camps should ensure that all the inmates of the labor colonies are inoculated or vaccinated, as the case may be depending on the diseases within 72 hours after the outbreak. The authorities in charge of the labor colony should arrange to communicate by wire regarding the outbreak of the epidemic diseases on the very day of the outbreak to the Mamlatdar of the taluka, the District Health officer or to the Deputy Director of Public Health, in charge of that area, and the Director of Public Health. Thereafter they should continue to send daily reports to the above officers in the prescribed from regarding the progress of the epidemic disease. When the authorities in charge of the labor colony suspect or have reason to believe that any inmate of the labor colony is suffering from the infections or contagious disease, they shall forthwith arrange for the segregation of such persons to isolated huts to be specifically provided for the purpose and also for their treatment. As regional malaria epidemic outbreaks are likely to occur in such project area, the authorities in charge of the labor colonies should report promptly the occurrence of unusual incidence of cases of malaria and also inform the District Health officers of the District, Deputy Director of Public Health (Malaria) and the Director of Public Health Govt. of Gujarat and also arrange to institute all necessary antimalaria measures as may be advised by the officials of the Public Health Department. The authorities in charge of the colonies should also arrange to carry out any other measures that may be recommended by the above officials necessary to prevent or control the spread disease. In every place wherein contractor labor is required to halt at night in connection with the contract works and in which employment of contract labor is likely to continue for three months of more, the contractor shall provide and maintain rest rooms or other suitable alternative accommodation within fifteen days of the employment of contract labor in new establishment.

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(B)

(C)

(D)

(E)

(F)

(15) Rest rooms : (1)

(2)

If the amenity referred to in sub-rule is not provided by the contractor within the period prescribed, the principal employer shall provide the same within a period of fifteen days of the expiry of the period laid down in the sub-rule - 1. Separate rooms shall provided for women employees. Effective and suitable provision shall be made in every room for securing and maintaining adequate ventilation for the circulation of fresh air and there shall also be provided and maintained sufficient and suitable natural or artificial lighting. The rest room or rooms of other suitable alternative accommodation shall be of such dimensions so as to provide at least a floor area of 1.0 sq. mt. for each person making use of the rest room. The rest room or rooms or other suitable accommodation shall be so constructed so as to afford adequate protection against heat, wind, rain and shall have smooth, hard and impervious surface. The rest room or other suitable alternative accommodation shall be at a convenient distance from the establishment and shall have adequate supply of whole ­ some drinking water.

(3) (4)

(5)

(6)

(7)

Canteen facilities (1) In every establishment of contract work and wherein work regarding the employment of contract labor is likely to continue for six months and wherein contract labor numbering one hundred or more are ordinarily employed, the adequate canteen facilities shall be provided by the contractor for the use of such contract labor within sixty days of the commencement of the employment of contract labor in the case of new establishment. If the contractor fails to provide the canteen facilities within the time laid down, the same shall be provided by the principal employer within sixty days of the time allowed to the contractor.

(2)

(17) Accommodation in canteen : (1) The canteen shall consist of at least dining hall kitchen, store-room, pantry and washing places separately for workers and for utensils.

(2) (i) The canteen shall be sufficiently lighted at all times where any persons has access to it (ii) The floor shall be made of smooth and impervious materials and inside walls shall be lime washed or colour- washed at least once each year.

53

Provided that the inside walls of the kitchen shall be lime-washed every four months. (3) (i) The premises of the canteen shall be maintained in a clean and sanitary condition. (ii) Waste water shall be carried away in suitable covered drains and shall not be allowed to accumulate so as to cause nuisance. (iii) Suitable arrangements shall be made for the collection and disposal of garbage. (18) Accommodation in dining hall : (1) The dining hall shall accommodation at a time at least 30 percent of the contract labor working at a time. The floor area of the dining hall excluding the area occupied per diner to be accommodated shall as prescribed in sub rule (1). (i) A portion of the dining hall and service counter shall be partitioned and reserved for women workers, in proportion to their number. (ii) Washing places for women shall be separate and screened to secure privacy. Sufficient tables, stools, chairs or benches shall be available for the number of diners to be accommodated as prescribed in sub-rule 1.

(2)

(3)

(4)

(19) Equipment in canteen (1) (i) There shall be provided and maintained sufficient utensils, crockery, cutlery, furniture, and any other equipment necessary for the efficient running of the canteen.. (ii) The furniture, utensils and another equipment shall be maintained in a clean any hygienic condition. (2) (i) Suitable clean clothes for the employees serving in the canteen shall also be provided and maintained. (ii) A service counter, if provided, shall have a top of smooth and imperious materials. (iii) Suitable facilities including an adequate supply of hot water shall be provided for the cleaning of utensils and equipment. (20) Food stuffs to be served : The food stuff and other items to be served in the canteen shall be in conformity with the normal habits of the contract labor. (21) Price to be displayed The charges for food - stuffs, beverges and any other item served in the canteen shall be based on "no profit no loss" and shall be conspicuously displayed in the canteen.

54

(22) Canteen to be run on no profit, no loss, basis : In arriving the prices of food - stuffs and other articles served in the canteen, the following items shall not be taken into consideration as expenditure namely. (a) The rent for the land and building (b) The depreciation and maintenance charges for the building and equipment providing for in the canteen. (c) The cost of purchase, repairs and replacement of equipments including furniture, crockery, cutlery and utensils; (d) The water charges and other charges incurred for lighting and ventilation; (e) The interest on the amounts spent on the provisions and maintenance of furniture and equipment provided for in the canteen. The local officers should checkup whether facilities as offered and which are admissible under the existing rules and orders are made available to the workers and force upon the contractors, the necessity of adhering to the instructions for the promotion of welfare of the workers according to the terms of contract. (23) Books of accounts and registers of the canteen : The books of accounts and registers and other documents used in connection with the running of the canteen shall be produced on demand to an inspector. (24) Audit of the accounts of the canteen : The accounts pertaining to the canteen shall be audited once every 2 months by registered accountant and auditors. Provided that the labour commissioner may approve of any other person to audit the accounts. If he is satisfies that it is not feasible to appoint a registered accountant and auditor in view of the site or the location of the canteen. Clause 58 : Contractor shall have to arrange for the supply of gum-boots, handgloves, mask etc. invariably to the labourers/workers engaged by the contractor on asphalt work. Clause 59 : The contractor shall not show any distinction between Harijan and other class of laborers / workers employed to carry out work. Clause 60 : Price variation clause : Deleted

Clause 60A : Price variation clause for cement and steel brought by the contractor. The amounts payable to the contractors for the work done involving use of cement and steel when this materials are not supplied by the VMSS as for Schedule-A shall be adjusted for increase or decrease in the rates of this materials as under :

55

The star rates for cement, mild steel and tor steel to be brought by the Contractor shall be considered Ex-supply Depot / Godown as under :Total Qty. QUANTITY STAR RATES Cement --- M.T. Rs. --/MT TMTFe-415 Steel --- M.T. Rs. --/MT The above star rates are linked with Reserve Bank of India price index for steel and cement for the month in which the DTPs are approved i.e. May -2011. The month in which DTPs are approved will be specified in the tender document. Star rates should be mentioned in the tender copy as under :i. For cement, price of cement from authorized dealer should be obtained for the month in which the D.T.P. s are approved and mentioned as star rate before issue of tender copy. ii. For TMT Fe-415 steel, rate of SAIL should be obtained for the month in which the DTPs are approved and mentioned as star rate before issue of tender copy. iii. For basic index specific month in which the DTPs are approved should be mentioned before issue of tender copy. The fluctuations in rates of cement and steel shall be adjusted in the bills payable to the contractors as under :A = B x C1 ­ 1 x D C0 A = Difference of Amount payable or recoverable B = Star rate of steel / cement. The (quarterly) average corresponding index for steel, cement for the quarter under consideration (as published in monthly bulletin or reserve Bank of India) Price index of cement / steel for the month in which the DTPs are approved published in monthly bulletin of Reserve Bank of India.

C1 =

Co = D=

Qty. of cement / steel actually brought by the contractor on site of work and consumed in the work during the quarter duly supported with bill as recorded in cement consumption register or MB (for steel.) Conditions for variation in prices of cement and steel only :1. 2. 3. 4. 5. No Celling for escalation for difference in the cost of steel and cement will be applicable. This clause shall be operative from the date of issue of work order and up to the expiry of original and extended time limit. This formula shall be used individually for cement/mild steel and Tor steel for calculating adjustment. The cement and steel brought by the contractor on site of work shall be used only after the same is tested by the Department. If such materials are not found as per the requirement of I. S. specification, the same shall be removed by the contractor for which no claim shall be entertained. This clause will be applied to the work estimated to cost above Rs. 15 Lacs.

6.

56

Conditions for variation in rates of asphalt only : DELETED Clause 62 : LIABILITY OF ACCIDENTS TO PERSONS Responsibilities and liabilities of the contractor, under workmens compensation ACT are given in clause 37 in addition following shall also apply : On the occurrence of an accident, which result in death of workmen employed by the contractor or which is so serious as is likely to result in death of any such workmen, the contractor, shall within 24 hours of happening of such accident(s) intimate, in writing to the Engineer-in-Charge the fact of such accident(s). The contractor shall indemnify Government against all loss or damage sustained by the Government resulting directly or indirectly from his failure to give intimation in the manner aforesaid including the penalties or fines, if any, payable by the Government as a consequence of Government's failure to give notice under the Workmen's Compensation Act or otherwise \to conform to the provisions of the said act in regard to such accidents(s). In the case of an accident, in respect of which compensation may become payable under Workmen's Compensation Act, whether by the contractor or by the Government as principal Employer, it shall be lawful for the Engineer-inCharge to retain out of money due and payable to the contractor, such sum or sum of money as may, in the opinion of the Engineer-in-Charge, be sufficient to meet such a liability. The opinion of the Engineer-in-Charge shall be final in regard to all matters arising under this clause. Access to site and work on site :

a)

b)

Clause 63 :

The Engineer in charge may, if he considers fit from time to time, enter upon any land(s) which may be in possession of the contractor under this contract for the purpose of executing any work not included in this contract and may executes such work not included in this contract by agents, or by other contractors with the opinion and the contractor shall in accordance with the requirements of the Engineer in charge, afford all reasonable facilities for execution of the including occupation of lands by structure or otherwise for any other contractor for the workmen of the client who may be employed by the client and his work men or employed in the execution on or near the site of the work not included in the contract or of any contract in connection with or ancillary to the work and in default, the contractor shall be liable to the client for any delay or expenses incurred by areas of such defaults provided always that if damage arising, make a statement of the same to the Engineer in charge who shall from time to time assess the value in his judgement of such damage and the client shall from time to time pay to contractor the amounts (if any) accepted as justified by the Engineer in charge. Clause 64 : (i) Reports regarding labor :

The contractor shall submit the following reports to the Engineer in charge. A daily report in the suitable form of the strength of labor, both skilled and unskilled, employed by him on the work(s). The contractor shall increase or decrease the strength, both skilled or unskilled, if directed by the Engineer in

57

(ii) (iii)

(iv) (v)

charge. The submission of such reports shall not, however, relieve the contractor of his responsibilities and duties regarding progress or any other obligation under the contract. A classified weekly return in the prescribed form of the number of persons employed on the works during the preceding week. A weekly medical report in the prescribed form showing the health of the contractor's camp the number of persons ill or incapacited and the nature of their illness. A report of any accident, which may have occurred, to be sent within 24 hours of the occurrence. Such other report as may be prescribed.

Clause 65 : Treasure trove : In the event of discovery by the contractor or his employees, during the progress of work of any gold, silver, oil or other minerals of any description and precious stones, treasures, coins, antiquities, relic, fossils or other articles or value of interest whether geological, archaeological or any other such treasure and other things shall be deemed to be the absolute property of the Government and the contractor shall duly preserve the same of the satisfaction of the Engineer-in-Charge, from time to time, and relieve the same to such persons as the Engineer-in-Charge may appoint. The contract shall take all reasonable precautions to prevent his workmen or any other person from removing or damaging any such articles or things, immediately after the discovery thereof and before removal acquaint the Engineer-in-Charge with such discovery and carry out his orders for the disposal of the same. Clause 66 : Indemnity :

The contractor shall indemnity the Government against all actions, suits claims and demand through or made against the Department in respect of work of this contract against any loss damage to Department in consequence of any action or suit being brought against the contractor for anything done or omitted to be done in execution of the work of this contract. Clause 67 : Insurance of laborers :

The contractor shall be responsible to arrange for insurance of all labourers, skilled and unskilled, workers, supervisors etc., employed by him as per labour regulation of the State. Clause 68 : Setting out :

The contractor shall be responsible for the true and proper setting out of the works and correctness of positions, levels, dimensions and alignment of all parts of the works and for the provision of all necessary instruments, appliances and labor in connection therewith. If at any time, during the progress of the work, any error, appear or arise in the positions, levels, dimensions or alignments of any part of the work. The contractor, on being required to rectify such errors by the Engineer in charge, shall at his own expense do so to the satisfaction of the Engineer in charge. If however, such error is based on incorrect data supplied in writing by the Engineer in

58

charge, the expenses of rectifying the same shall be borne by the client. The checking of and setting out of and line or level by the Engineer in charge or his representative shall not, in any way relieve the contractor of his responsibilities for the correctness of the error. The contractor shall carefully protect and conserve all benchmarks, sitenails pegs and other things used in setting out of the work(s). Clause 69 : Cement register :

A register in the prescribed form showing day to day receipt, consumption and balance of cement procurement on site of work will be maintained by the Engineer in charge, which shall invariable be signed daily by the contractor or his authorized representative in token of its correctness. Clause 70 : Materials and work test Register : A register in the prescribed proforma showing test result of materials and work tests will be maintained at the site of work by the Engineer in charge, and every entry thereof shall invariably the signed by the contractor or his authorized representative in token of its correctness. Clause 71 : Progress schedule : The contractor shall furnish within one month (unless extended by the Engineer in charge) of the order to start the work, the progress schedule in quadruplicate indicating the date of starting, the monthly progress expected to be achieved and the anticipated completion date of each major item of work to be done by him, also indicating dates of procurement and setting up of materials, plants and machinery. The schedule should include a statement of proposed general and detailed arrangements for carrying out works, and of item, order and manner in which it is proposed general and detailed arrangement for carrying out works and of items ordered and manner in which it is proposed that these shall be executed. The schedule should be framed keeping requirement of the Clause ­ 2 of tender form in view and be such as in practice to the achievement towards completion of the work in the time limit and of the particular items on the dates specified in the contract and shall have the approval of the Engineer-in-charge. Further, the dates for the progress, as in this schedule, shall be adhered to. (a) In case it is found necessary, at any stage, to alter the schedule, the contractor shall submit in good time, a revised schedule incorporating necessary modifications proposed and get the same approved from the Engineer-incharge. No revised schedule shall be operative without such acceptance in writing. The Engineer-in-charge is further empowered to ask for more details schedule or schedules, any week by week, for any item or items and the contractor shall supply the same as and when asked for. The Engineer in charge shall have at all times, the right, without in any way vitiating this contract forming grounds for any claim, to alter the order of the work of any part thereof and the contractor shall, after receiving such direction, proceed in the order directed. The contractor shall also revise the progress schedules accordingly and submit four copies of the revised schedule

(b)

59

(c)

to the said Engineer-in-charge within seven days of the said Engineer's direction to alter the order of works. The contractor shall furnish sufficient plant, equipment and labor and shall work such hours and shifts as may be necessary to maintain the progress of the work as per approved progress schedule. The working and shift hours shall comply with all the Government regulations in force and shall be such, as may be approved by the Engineer-in-charge and the same not be varied without the prior approval of the Engineer-in-charge. The contractor shall from time to time, as may be required by the Engineer in charge, furnish the Engineer-in-charge with a statement in writing of arrangements he proposes to adopt for the execution of this contract and the Engineer-in-charge may, if he considers necessary at any time advise alteration in the same, which the contractor shall adopt on notice thereof. The progress schedule (s) shall be in the form of progress charts, forms, statements and/or reports as may be approved by the Engineer-in-charge. The contractor shall submit four copies showing the progress of the work in the form of a chart etc. at periodical internals as may be specified by Engineerin-charge. The approval of the progress schedules by the Engineer-in-charge shall not relieve the contractor of schedule required by the Engineer-in-charge shall not entitle the contractor to any extra payment. Secured advance to Contractor

(d)

(e)

(f)

Clause 72 : 1.

Advance on security of materials for (steel and cement only) brought to site will not exceed 75% of the value (as assessed by the Executive Engineer) Recovery of advances willnot be postponed until the whole of the work entrusted is completed. Secured advance will be recovered with 3 months from the month in which secured advance is given even if material is not utilised in the work. Secured advance is permissible on materials which are all actually brought on site and are required by the contractor for use on items of works for which rates for finished work have been agreed upon. Secured advance will be given only on materials for which the full value is paid by the contractor to the seller. When material brought to the site for which secured advance given, found loss in material, the report in this regard shall be done by the contractor. The loss of material at the site shall be informed to Engineer in charge by the contractor immediately. If this information is not intimated by the contractor in this case the contractor will be considered responsible for loss/thief of the material and actions will be taken.

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2.

3.

4.

5.

In addition to this technical officers/employees like clerk / work assistance are also responsible for this report. The technical officers shall have to look after the material on site and if any loss or thief in material found they have to report within 3 days otherwise responsibility will be fixed by the department. (Government R &B Department, RESO No. PWM-1090-UO.13(5) dated 2410-90) 6. When contractor intends to take advance for the material they shall have to mortgage in form no. 31 with the application the bill of purchase for the material or invoice / delivery challan shall have to be attached. Government will get lien on the mortgage material and will get protection against advance when contractor works delayed, loss in material misused of material or mismanagement of the guard for the security. When secured advance more than Rs. 50,000 for the material shall have to give to the contractor, executive engineer /engineer in charge shall have to check fully the materials. (R & B DGR No. PWM-1090-40-13(5)-C, dated 244-92) Secured advance will be paid after producing bank guarantee for the amount equal to amount of secured advance by the contractor ( R & B, PWM1090/UO-13(5)-S) issued by any Nationalised bank stationed at Vadodara.

7.

8.

Clause 73 : Advance payment : Advance payment for the work done but not measured may be made up to 80 percent of the approximate value of the work done as shown in the progress reports of approximate measurement sheets with location furnished by the Engineer-in-charge to the following conditions. (1) That in the case of advance payment on the item of earth-work payment should be made on the basis of detailed measurement except during the monsoon period (June to September) That the detailed measurements should be recorded within the month from the date of payment of the bill incorporating the advance payment. However, in the case of sectional measurements of earth-work, detailed measurements should be recorded within three months instead of one month stipulated above. If, on recording of the detailed measurement, it is found that advance payment was made for more amount than the value of work now measured, excess payment shall be refunded forth with by the contractor on demand, if it can not be adjusted from the bill in which the items on which advance payment was given, are recorded by measurements.

(2)

(3)

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Clause 74 : Advance Against Machineries DELETED Clause 75 : Mobilisation Advance DELETED Please refer page stand of this contract clause 3.5 Clause 76 : Before starting the work, the contractor will have to obtain the license from the District Assistant Labor Commissioner under the contract labor (Regulation and abolition) Act,1970 and contract labor (Regulation and abolition) Gujarat Rules, 1972 after paying necessary fees and deposit on the basis of the number of laborers to be employed on the work and will have to supply two true copies of the said license to the client before the work is stared. Clause 77 : Clause 78 : Testing Charges DELETED Schedule of Testing DELETED.

Signature of the contractor Date :

City Engineer Vadodara Mahanagar Seva Sadan Vadodara

62

SCHEDULE - A : (Deleted) Schedule showing (approximately) the materials to be supplied from the stores for work contracted to be executed and the rates at which they are to be charged for.

Particulars

Rates at which the materials will be charged to the contractor

Place of Delivery

Cement

Not to be issued

Mild steel Not to be issued round bars and TMT FE-415 Reinforcement

"Cement and steel will not be supplied by the Vadodara Mahanagar Seva Sadan. The contractor have to make their own arrangements for procurements of indigenous portland cement or imported portland cement and M.S. round bars and TMT Fe-415 reinforcement for the entire work. The contractors shall have to give necessary test certificates as per relevant I.S. code before using the same in the work. Sample testing for cement and steel from the actual stock shall be carried out in the authorised laboratories by the contractors at their own cost as and when required by the Vadodara Mahanagar Seva Sadan".

Signature of Contractor Date :

City Engineer Vadodara Mahanagar Seva Sadan Vadodara

63

SCHEDULE - B (PRICE - BID)

MEMORANDUM SHOWING ITEMS OF WORKS TO BE CARRIED OUT

Item No.

Quantities Items of estimated work but may be more or less As per separate 'Price Bid' (Volume - III) attached

Estimated rates Fig. Words

Unit

Total amount according to estimated quantities.

Note 1 :

All work shall be carried out as per Public Works Department Handbook and other specifications of VMSS. All the columns in the schedule should be filled in, in ink and total of the entries in the last column should be struck by the contractor under his signature. Rates quoted include clearance of site (prior to commencement of work and at its close) in all respects and hold good for work under all conditions, site, moisture, weather etc.

Note 2 :

Note 3 :

Signature of Contractor Date :

City Engineer Vadodara Mahanagar Seva Sadan Vadodara

64

(E)

GENERAL SPECIFICATIONS

The work shall be completed within 8 months after the order to start of the work. The Contractor shall have to maintain account of steel, cement and other materials that may be brought by him on site. The account shall be regularly maintained and kept open for inspection by VMSS staff. Watering of all the items shall be done as per instructions. Mixing of concrete shall be done by concrete mixer machine. Arrangements of bringing vibrator for R.C.C. work if required shall have to be made by the Contractor. The contractor shall remain responsible for workmen's compensation if any, when such case occurs, the Contractor shall arrange for red lamps at night and fencing and pagi and shall be responsible for any damage of life and lime or property if any happen, during the execution of work. In case of dispute for unseen or overlooked items, the decision of Executive Engineer VMSS shall be final. The Contractor shall have to give site clean of all rubbish on completion of work and hand over the bridge with final finishing as directed. All the rejected materials shall be removed from site within 24 hours by Contractor at his risk and cost. For mixing mortar either for masonry or for plaster or for any other purpose Contractor shall have to prepare trough of bigger size and mix the mortar in required proportion. In no case he shall be allowed to mix the mortar either on floor or any finished surface. The Contractor shall have to make his own arrangement for water required for the work. If any extra item crops up during the progress of work the same shall be carried out by the Contractor and he shall be paid at the rate fixed by Municipal Commissioner as per the rate analysis based on current market rates. If in the interest of the VMSS it is necessary to change either any site or the design of the proposed work the Contractor shall carry out the same at his quoted rates without charging any extra (will have to carry out the works) and he will be paid at the rates quoted by him and no claim for extra for subsequent changes made, entertained. The cubical contents of the cement bag shall be taken as per actual weight of bag and the Contractor shall have to prepare the concrete mixes using weigh batches. The RCC specified work shall not be done on Sunday and holiday except in emergency or when technical requirements are such that continuity of work should be maintained and that too will be with prior permission of the competent authority. "Cement and steel will not be supplied by the Vadodara Mahanagar Seva Sadan The contractors have to make their own arrangements for procurement of indigeneous portland cement or imported portland cement and M.S. Round Bards including coils and TMT Fe-415 reinforcement for the entire work. The contractors shall have to give necessary test certificates as per relevant I.S. code before using the same in the work".

65

Contractor will be fully responsible for compliance of the various provisions under Contract Labour Act, 1970 and the Rules framed thereunder. As per circular no. MGR 2176(96), 2418 (ii) dt. 31/8/77 issued by the Government of Gujarat, contractors are requested to procure their quarry materials required for construction work through legal sources i.e. only from the quarry lease holders permit holders or middle man who satisfies the contractor as to the legality of the source of purchase by him of these materials.

Signature of the Contractor Date :

City Engineer Vadodara Mahanagar Seva Sadan Vadodara

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VADODARA MAHANAGAR SEVA SADAN, VADODARA

STRENGTHENING AND WIDENING OF BRIDGE ACROSS DRAIN NEAR MANGLESHWAR AT VADODARA SECTION-II ­ TECHNICAL SPECIFICATIONS FOR APPROACHES TO ROB

(A)

DETAILED SPECIFICATIONS OF MATERIALS

GENERAL

Material to be used in the work shall conform to the specifications mentioned on the drawings, the requirements laid down in this section and specifications for relevant items of work covered under these specifications If any material, not covered in these specifications, is required to be used in the work, it shall conform to relevant Indian Standards, if there are any, or to the requirements specified by the Engineer. SOURCES OF MATERIAL The Contractor shall notify the Engineer of his proposed sources of materials prior to delivery. If it is found after trial that sources of supply previously approved do not produce uniform and satisfactory products, or if the product from any other source proves unacceptable at any time, the Contractor shall furnish acceptable material from other sources at his own expenses. BRICKS Burnt clay bricks shall conform to the requirements of IS : 1077, except that the minimum compressive strength when tested flat shall not be less than 8.4 MPa for individual bricks and 10.5 MPa for average of 5 specimens. They shall be free from cracks and flaws and nodules of free lime. The brick shall have smooth rectangular faces with sharp corners and emit a clear ringing sound when struck. The size may be according to local practice with a tolerance of +5 per cent. STONES Stones shall be of the type specified. It shall be hard, sound, free from cracks, decay and weathering and shall be freshly quarried from a n approved quarry. Stone with round surface shall not be used. The stones, when immersed in water for 24 hours, shall not absorb water by more than 5% of their dry weight when tested in accordance with IS : 1124.

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The length of stones shall not exceed 3 times its height nor shall they be less than twice its height plus one joint. No stone shall be less in width than the height and width on the base shall not be greater than three fourth of the thickness of the wall nor less than 150 mm. CAST IRON Cast iron shall conform to IS : 210. The grade number of the material shall not be less than 14. CEMENT Cement to be used in the works shall be any of the following types with the prior approval of the Engineer : (Ultratech, Ambuja, J.K. Laxmi, A.C.C., Binani & Birla, Lotus, Jaypee. (1) (2) (3) (4) (5) Ordinary Portland cement, 33 grade, conforming to IS : 269 Rapid Hardening Portland Cement, conforming to IS : 8041. Ordinary Portland cement, 43 grade, conforming to IS : 8112. Ordinary Portland cement, 53 grade, conforming to IS : 12269. Sulphate Resistant Portland Cement, conforming to IS : 12330.

Cement conforming to IS : 269 shall be used only after ensuring that the minimum required design strength can be achieved without exceeding the maximum permissible cement content of 540 KG/cu.m. of concrete. Cement conforming to IS : 8112 and IS : 12269 may be used provided the minimum cement content mentioned elsewhere from durability considerations is not reduced. From strength considerations these cements shall be used with a certain caution as high early strengths of cement in the 1 to 28 day range can be achieved by finer grinding and higher constituent ratio of C3S/C2S, where C3S is Tricalcium silicate and C2S is Dicalcium silicate. In such cements, the further growth of strength beyond say 4 weeks may be much lower than that traditionally expected. Therefore, further strength tests shall be carried out for 56 and 90 days to fine tune the mix design from strength considerations. Cement conforming to IS : 12330 shall be used when sodium sulphate and magnesium sulphate are present in large enough concentration to be aggressive to concrete. The recommended threshold values as per IS 456 are sulphate concentration in excess of 0.2% in soil sub strata or 300 ppm (0.03%) in ground water. Tests to confirm actual values of sulphate concentration are essential when the structure is located near the sea coast, chemical factories, agricultural land using chemical fertilizers an sites where there are effluent discharges or where soluble

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sulphate bearing ground water level is high,. Cement conforming to IS : 12330 shall be carefully selected from strength considerations to ensure that the minimum required design strength can be achieved without exceeding the maximum persmi9ssible cement content of 540 Kg./cu.m. of concrete. Total chloride content in cement shall in no case exceed 0.05% by mass of cement. Also, total sulphate content calculates as sulphate anhydride (SO3) shall in no case exceed 2.5% and 3% when tri-calcium aluminates % by mass is upto 5 or greater than 5 respectively. COARSE AGGREGATES For plain and reinforced cement concrete (PCC and RCC) fine aggregate shall consist of clean, hard, strong and durable pieces of crushed stone, crushed gravel, natural gravel or a suitable combination thereof or other approved inert material. They shall not consist pieces of disintegrated stones, soft, flaky, elongated particles, salt, alkali, vegetable matter or other deleterious materials in such quantities as to reduce the strength and durability of the concrete, or to attack the steel reinforcement. Coarse aggregate having positive alkali-silica reaction shall not be used. All coarse aggregates shall conform to IS : 383 and tests for conformity shall be carried out as per IS : 2386, Parts I to VIII. The contractor shall submit for the approval of the Engineer, the entire information indicated in Appendix A of IS : 383. Maximum nominal size of coarse aggregate for various structural components in PCC, RCC or PSC, shall conform to Section 1700. The maximum value for flakiness index for coarse aggregate shall not exceed 35%. The coarse aggregate shall satisfy the following requirements of grading : Table 1 Requirements of Coarse Aggregate IS Sieve Size % By Weight Passing the Sieve 40 mm 20 mm 12.5 mm 63 mm 100 40 mm 95-100 100 20 mm 30-70 95-100 100 12.5 mm 90-100 10 mm 10-35 25-55 40-85 4.75 mm 0-5 0-10 0-10

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SAND/FINE AGGREGATES For masonry work, sand shall conform to the requirements of IS : 2116. For plain and reinforced cement concrete (PCC and RCC) fine aggregate shall consist of clean, hard, strong and durable pieces of crushed stone, crushed gravel, or a suitable combination of natural sand, crushed stone or gravel. They shall not contain dust, lumps, soft or flaky, materials, mica or other deleterious materials, in such quantities as to reduce the strength and durability of the concrete, or to attack the embedded steel. Motorised sand washing machines should be sued to remove impurities from sand. Fine aggregate having positive alkali-silica reaction shall not be used. All fine aggregates shall conform to IS : 383 and tests for conformity shall be carried out as per IS : 2386, (Parts I to VIII). The Contractor shall submit to the Engineer the entire information indicated in Appendix A of IS : 383. The fineness modulus of fine aggregate shall neither be less than 2.0 nor greater than 3.5. San/fine aggregate for structural concrete shall conform to the following grading requirements : Table 2 IS Sieve Size 10 mm 4.75 mm 2.36 mm 1.18 mm 600 micron 300 micron 150 micron % By Weight Passing the Sieve Zone I Zone II Zone III 100 100 100 90-100 90-100 90-100 60-95 75-100 85-100 30-70 15-34 5-20 0-10 55-90 35-59 8-30 0-10 75-100 60-79 12-40 0-10

STEEL Cast Steel The use of cast steel shall be limited to bearings and other similar parts. Steel for castings shall conform to Grade 280-520 N of IS : 1030. In case where subsequent welding is unavoidable in the relevant cast steel components, the letter N at the end of the grade designation of the steel casting shall be replaced by letter W. 0.3% to 0.5% copper may be added to increase the corrosion resistance properties.

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Steel for Prestressing The prestressing steel shall conform to either of the following : (1) Plain hard drawn steel wire conforming to IS : 1785 (Part I) and IS : 1785 (Part II). Cold drawn indented wire conforming to IS : 6003. High tensile steel bar conforming to IS : 2090. Uncoated stress relieved strands conforming to IS : 6006.

(2) (3) (4)

Reinforcement / Untensioned Steel (Tata, Sail, Electrotherm , Ispat, Welspun, Hytuf steel, Vizag Steel, Parmeshwar God or any equivalent make as approved by VMSS must be used). For plain and reinforced cement concrete (PCC and RCC) the reinforcement / untensioned steel as the case may be shall consist of the following grades of reinforcing bars. Table 3 Bar Type conforming to governing IS Specification IS : 432 Part I Mild Steel Bar IS : 1786 High yield Strength Deformed Bars (HYSD)

Grade Designation S 240 S 415

Elastic Characteristic Modulus GPa Strength by Mpa 240 200 415 200

Other grades of bars conforming to IS : 432 and IS : 1786 shall not be permitted. All steel shall be procured from original producers, no re-rolled steel shall be incorporated in the work. Only new steel shall be delivered to the site. Every bar shall be inspected before assembling on the work and defective, brittle or burnt bar shall be discarded. Cracked ends of bars shall be discarded. Fusion-bonded epoxy coated reinforcing bars shall meet the requirements of IS : 13620. Additional requirements for the use of such reinforcement bars have been given below : (1) Patch up materials shall be procured in sealed containers with certificates from the agency who has supplied the fusion bonded epoxy bars.

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(2) PVC coated G.I. binding wires of 18 G shall only be used in conjunction with fusion bonded epoxy bars. (3) Chairs for supporting the reinforcement shall also be of fusion bonded epoxy coated bars. (4) The cut ends and damaged portions shall be touched up with repair patch up material. (5) The bars shall be cut by saw-cutting rather than flame cutting. (6) While bending the bars, the pins of work benches shall be provided with PVC or plastic sleeves. (7) The coated steel shall not be directly exposed to sun rays or rains and shall be protected with opaque polyethylene sheets or such other approved materials. (8) While concreting, the workmen or trolleys shall not directly move on coated bars but can move on wooden planks placed on the bars. When specified in the contract, protective coating prescribed by CECRI shall be provided in conformance to specifications given in Appendix 1000/1. The CECRI coating process shall be allowed to be implemented at the site of works provided a representative of the Institute is present throughout the duration of the coating process who shall certify that the materials and workmanship are in accordance with prescribed specifications developed by the Institute. Grey Iron Castings Grey iron castings to be used for bearings shall have the following minimum properties i) ii) iii) iv) v) Minimum ultimate tensile strength Modulus of Elasticity Brinell Hardness Shear Strength Compressive strength 370 Mpa 14000 Mpa 230 Mpa 370 Mpa 1370 Mpa

The testing shall be as specified in IS : 210. Steel Forgings Forged steel pins shall comply with clause 3, 3A or 4 of IS : 1875 and steel forgings shall comply with clause 3, 3A or 4 of IS : 2004. Raw materials of the forging will be taken as per IS : 1875 with minimum reduction ratio of 1.8:1. Alternatively, if forging is made from ingot, a minimum reduction ratio between the ingot and forging will be 4:1. Forging shall be normalized. Structural Steel Unless otherwise permitted herein, all structural steel before fabrication comply with the requirements of the following Indian Standards : IS : 226 IS : 961 IS : 2062 : : : Structural Steel (Standard /Quality) Structural Steel (High Tensile) Weldable Structural Steel

72

IS : 8500 IS : 1148 IS : 1149 IS : 1161 IS : 4923 IS : 11587 IS : 808 IS : 1239 IS : 1730

: : : : : : : : :

Weldable Structural Steel (medium & high strength qualities) Hot rolled rivet bars (upto 40 mm dia) for structural purposes High tensile rivet bars for structural purposes Steel tubes for structural purposes Hollow Steel sections for structural use Structural weather resistant steel Specifications for Rolled Steel Beam, Channel and Angle Sections Mild Steel Tubes Dimension for Steel Plate, Sheet and strip for structural and general engineering purposes

Dimension for Steel flats for structural and general engineering purposes IS : 1732 : Dimension for round and square steel bars for structural and general engineering purposes IS : 1852 : Rolling and cutting tolerances for hot rolled steel products. The use of structural steel not covered by the above standards may be permitted with the specific approval of the authority. Refer to Section 1900 for further details. Stainless Steel Stainless Steel shall be austenitic chromium nickel steel, possessing rust, acid and heat resistant properties conforming to IS : 6603 and IS : 6911. Mechanical properties / grade for such stainless steel shall be as specified by the accepting authority, but in no case be inferior to mild steel. Generally, stainless steel is available as per AISI grades. AISI 304 which is equivalent to grade 04Cr18Nil10 of IS : 6911 satisfies the requirements of mechanical properties of structural steel. Other grades of stainless steel for specific requirements. For application in adverse / corrosive environment, stainless steel shall conform to AISI 316L or 02G17 Ni Mo2 of IS : 6911. Water Water used for mixing and curing shall be clean and free from injurious amounts of oils, acids, alkalis, salts, sugar, organic materials or other substances that may be deleterious to concrete or steel. Potable water is generally considered satisfactory for mixing concrete. Mixing and curing with sea water shall not be permitted. As a guide, the following concentrations represent the maximum permissible values : (a) (b) (c) To neutralize 200 ml sample of water, using phenolpthalein as an indicator, it should not require more than 2 ml of 0.1 normal NaOH. To neutralize 200 ml sample of water, using methyl orange as an indicator, it should not require more than 10 ml of 0.1 normal HCI. The permissible limits for solids shall be as follows when tested in accordance with IS : 3025 :

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IS : 1731

:

Organic Inorganic Sulphate (SQ4) Chlorides (CI) Suspended matter (a)

Permissible Limits (max.) 200 mg/lit 3000 mg/lit 500 mg/lit 500 mg/lit 2000 mg/lit

In case of structures of lengths 30 m. and below, the permissible limit of chlorides may be increased upto 1000 mg/lit. All samples of water (including potable water) shall be tested and suitable measures taken where necessary to ensure conformity of the water to the requirements stated herein. (d) The pH value shall not be less than 6. Concrete Admixtures General Admixtures are materials added to the concrete before or during mixing with a view to modify one or more of the properties of concrete in the plastic or hardened state. Concrete admixtures are proprietary items of manufacture and shall be obtained only from established manufacturers with proven track record, quality assurance and full fledged laboratory facilities for the manufacture and testing of concrete. The contractor shall provide the following information concerning each admixture after obtaining the same from the manufacturer : (a) Normal dosage and detrimental effects, if any, of under dosage and over dosage. (1) (2) The chemical names of the main ingredients in the admixtures. The chloride content, if any, expressed as a % by the weight of the admixture. Values of dry material content, ash content and relative density of the admixture which can be used for Uniformity Tests. Whether or not the admixture leads to the entertainment of air when used as per the manufacturer's recommended dosage, and if so to what extent. Where two or more admixtures are proposed to be used in any one mix, confirmation as to their compatibility. There would be no increase in risk of corrosion of the reinforcement or other embedments as a result of using the admixture.

(3)

(4)

(5)

(6)

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Physical and Chemical Requirements Admixtures shall conform to the requirements of IS : 9103. In addition, the following conditions shall be satisfied . (ii) "Plasticisers" and "Super-Plasticisers" shall meet the requirements indicated for "Water reducing Admixture" (iii) Except where resistance to freezing and thawing and to disruptive action of deicing salts is necessary, the air content of freshly mixed concrete in accordance with the pressure method given in IS : 1199 shall not be more than 2% higher than that of the corresponding control mix and in any case not more than 3% of the test mix. The chloride content of the admixture shall not exceed 0.2% when tested in accordance with IS : 6925. In addition, the maximum permissible limit of chloride content of all the constituents as indicated in Section 1700 shall also be observed. Uniformity tests on the admixtures are essential to compare qualitatively the composition of different samples taken from batch to batch or from the same batch at different times. The tests that shall be performed along with permissible variations in the same are indicated below : (b) (c) Dry Material Content : to be within 3% and 5% of liquid and solid admixtures respectively of the value stated by the manufacturer. Ash content : to be within 1% of the value stated by the manufacturer.

(iv)

(v)

Relative Density (for liquid admixtures) : to be within 2% of the value stated by the manufacturer. Reinforced concrete pipes Reinforced concrete pipes for highway structures shall be of NP4 type conforming to the requirements of IS : 458. Storage of Materials General All materials may be stored at proper places so as to prevent their deterioration or intrusion by foreign matter and to ensure their satisfactory quality and fitness for the work. The storage space must also permit easy inspection, removal and restorage of the materials. All such materials even though stored in approved godowns/places, must be subjected to acceptance test prior their immediate use.

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Brick Bricks shall not be dumped at site. They shall be stacked in regular tiers as they are unloaded, to minimize breakage and defacement. The supply of bricks shall be available at site at any time. Bricks selected for use in different situations shall be stacked separately. Aggregates Aggregates stockpiles may be made on ground that is denuded of vegetation, is hard and well drained. IF necessary, the ground shall be covered with 50 mm plank. Coarse aggregates, unless otherwise agreed by the Engieer in writing, shall be delivered to the site in separate sizes ( 2 sizes when nominal size is 25 mm or less and 3 sizes when the nominal size is 32 mm or more). Aggregates placed directly on the ground shallnot be removed from the stokpile within 30 cm of the ground until the final cleaning up of the work, and then only the clean aggregate will be permitted to be used. In the case of fine aggregates, these shall be deposited at the mixing site not less than 8 hours before use and shall have been tested and approved by the Engineer. Cement Cement shall be transported, handled and stored on the site in such a manner as to avoid deterioration or contamination. Cement shall be stored above ground level in perfectly dry and water tight sheds and shall be stacked not more than eight bags high. Wherever bulk storage containers are used their capacity should be sufficient to cater to the requirement at site and should be cleaned at least once every 3 to 4 months. Each consignment shall be stored separately so that it may be readily identified and inspected and cement shall be used in the sequence in which it is delivered at site. Any consignment or part of a consignment of cement which had deteriorated in any way, during storage, shall not be used in the works and shall be removed from the site by the Contractor without charge to the Employer. The Contractor shall prepare and maintain proper records on site in respect of delivery,. Handling, storage and use of cement and these records shall be available for inspection by the Engineer at all times. The Contractor shall make a monthly return to the Engineer on the date corresponding to the interim certificate date, showing the quantities of cement received and issued during the month and in stock at the end of the month. Reinforcement / Untensioned Steel The reinforcement bars, when delivered on the job, shall be stored above the surface of the ground upon platforms, skids, or other supports, and shall be protected from mechanical injury and from deterioration by exposure.

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Prestressing Materials All prestressing steel, sheathing, anchorages and sleeves or coupling must be protected during transportation, handling and storage. The prestressing steel, sheathing and other accessories must be stored under cover from rain or damp ground and protected from the ambient atmosphere if it is likely to be aggressive. Storage at site must be kept to the absolute minimum. (a) Tendon : Wire, strand and bar from which tendons are to be fabricated shall be stored about 300 mm above the ground in a suitable covered and closed space so as to avoid direct climatic influence and to protect them from splashes from any other materials and from the cutting operation of an oxyacetylene torch or arc welding process in the vicinity. Under no circumstances, tendon material shall be subjected to any welding operation or on site heat treatment or metallic coating such as galvanizing. Storage facilities and the procedures for transporting material into or out of store, shall be such that the material does not become kinked or notched. Wire or strand shall be stored in large diameter coils which enable the tendons to be laid out straight. As a guide, for wires above 5 mm dia, coils of about 2 m dia without breaks or joints shall be obtained from manufacture and stored. P{protective wrapping for tendons shall be chemically neutral. All prestressing steel must be provided with temporary protection during storage. (b) Anchorage Components : The handling and storing procedures shall maintain the anchorage components in a condition in which they can subsequently perform their function to an adequate degree. Components shall be handled and stored so that mechanical damage and detrimental corrosion are prevented. The corrosion of the gripping and securing system shall be prevented. The use of correctly formulated oils and greases or of other corrosion preventing material is recommended where prolonged storage is required. Such protective material shall be guaranteed by the producer to be no-aggressive and non-degrading. Prestressing steel shall be stored in a closed store having single door with double locking arrangements and no windows. Also the air inside the store shall be kept dry as far as possible by using various means to the satisfaction of the Engineer. Also instrument measuring the air humidity shall be installed inside the store. This is with a view to eliminating the possibility of initial rusting of prestressing steel during storage. The prestressing steel shall be coated with water solvable grease. The prestressing steel should be absolutely clean and without any signs of rust. All prestressing steel shall be stored at least 30 cm above ground level and it shall be invariably wrapped by protective cover of tar paper orpolythene or any other approved material. The Contractor should see that prestressing steel shall be used within 3 months of its manufacture. He should chalk out his programme in this respect precisely, so as to avoid initial corrosion before placing in position.

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Water Water shall be stored in containers /tanks covered at top and cleaned at regular intervals in order to prevent intrusion by foreign matter or growth of organic matter. Water from shallow, muddy or marshy surface shall not be permitted. The intake pipe shall be enclosed to exclude silt, mud, grass and other solid materials and there shall be a minimum depth of 0.60 m of water below the intake at all times. Tests and standard of acceptance All materials, even though stored in an approved manner shall be subjected to an acceptance test prior to their immediate use. Independent testing of cement for every consignment shall be done by the contractor at site in the laboratory approved by the Engineer before use. Any cement with lower quality than those shown in manufacturer's certificate shall be debarred from use. In case of imported cement, the same series of test shall be carried out before acceptance. Testing and approval of material The contractor shall furnish test certificates from the manufacturer / supplier of materials along with each batch of materials delivered to site. All the test shall be carried out as per friqvance requirement. Where ever testing is required from outside laboratory 60% testing shall be done through government organization The contractor shall set up a field laboratory with necessary equipment for testing of all materials, finished products used in the construction as per requirements of conditions of contract and the relevant specifications. The testing of all the materials shall be carried out by the Engineer or his representative for which the contractor shall make all the necessary arrangements and bear the entire cost. Tests which cannot be carried out in the field laboratory have to be got done at the Contractor's cost at any recognized laboratory / testing establishments approved by the Engineer. Sampling of Materials Sample provided to the Engineer or his representative for their retention are to be in labeled boxes suitable for storage. Samples required for approval and testing must be supplied well in advance by at least 48 hours or minimum period required for carrying out relevant tests to allow for testing and approval. Delay to works arising from the late submission of samples will not be acceptable as a reason for delay in the completion of the works.

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If materials are brought from abroad, the cost of sampling / testing whether in India or abroad shall be borne by the contractor. Rejection of Materials not conforming to the specifications Any stack or batch of material(s) of which sample(s) does not conform to the prescribed tests and quality shall be rejected by the Engineer or his representative and such materials shall be removed from site by the Contractor at his own cost. Such rejected materials shall not be made acceptable by any modifications. Testing and approval of plant and equipment All plants and equipment used for preparing, testing and production of materials for incorporation into the permanent works shall be in accordance with manufacture's specifications and shall be got approved by the Engineer before use.

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(B) (1)

TECHNICAL SPECIFICATIONS FOR THE ITEMS GENERAL :

These specifications cover the items of work in structural and non-structural parts of the works coming under purview of this document. All work shall be carried out in confirmation with these specifications. In general, provisions of Indian standard, Indian Road Congress codes and other national standards shall be followed unless otherwise specified. These specifications are not intended to cover the minor details. The work shall be executed in accordance with best modern practices and all latest codes and standards referred to in these specifications and shall be read in conjunction with the various other documents forming the contract viz. tender specifications, schedule B, contract drawings and other related documents. · Inclusive documents : The provisions of all conditions of contract, those specified in this tender as well as execution drawings, and notes or other specifications issued in writing by the Engineer in charge shall form part of these specifications. · Order of precedence, clarifications and interpretations : When the various specifications and codes referred to in preceding portion are at variance with these specifications and or with each other, the order of precedence will generally be as laid down in this document. The attention of the contractor is drawn to those clauses of IS codes which require either supplementing specifications from the Engineer in charge or the call for mutual agreement of such specifications between the supplier and purchaser. In such cases, it shall be the responsibility of the contractor to seek clarifications on any uncertainty, ambiguity and obtain prior approval of the Engineer ion charge, before taking up the supply / construction etc. · Measurement and Payments (a) The method of measurement and payment shall be as described under various items and in the schedule ­ B. Where specified definitions are not given, the methods described in I. S. Code will be followed. there should be any detail of construction materials which has not been referred to in the specifications or in the Schedule ­ B and drawings but the necessity for which may be implied or inferred therefrom, or which are usual or essential for the completion of the work, in the trades, the same shall be deemed to be included in the rates quoted by the contractor in the Schedule­ B.

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For RCC items, the payment shall be made at 96% of the tender rate, when the RCC work is executed. The remaining 4% shall be released after receipt of satisfactory results of the tests which are to be carried out at the end of 28 days. c) Unacceptable work All defective works are liable to be demolished, rebuilt and defective materials replaced by the contractor at his own cost. In the event of such works being accepted by carrying out repairs etc. as specified by the Engineer in charge, the cost of repairs will be borne by the contractor and will be paid for the works actually carried out by him at reduced rates of the tendered rates, as may be considered reasonable by the Engineer in charge, in the preparation of final or on account bills.

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(2)

SPECIFICATIONS FOR EARTH WORK EXCAVATION AND BACK FILLING : This part of the specification deals with general requirements for earthwork in excavation in different materials, site grading, filling in areas shown in drawings, back filling ground foundations, plinths and approach ramps, conveyance and disposal of excess excavated soil or stacking them properly as directed by the Engineer-incharge and all operations covered within the intent and purpose of these specifications. Applicable codes : The provisions of the latest Indian Standards listed below, but not restricted to, shall form part of these specifications : IS - 1200 : Method of measurement of building and civil Engineering works ­ Part I : Earth work. IS - 1498 : Classification and identification of soil for general engineering purposes. - 2720 : Method of test for soils. (All parts) - 2809 : Glossary of terms and symbols relating to soil engineering - 3764 : Safety code for excavation work. - 4988 : Glossary of terms and classifications of earth moving machinery (all parts)

1.

2.

IS IS IS IS

3.

Drawings : The Engineer-in-charge will furnish drawings wherever in his opinion such drawings are required to show the areas to be excavated / filled, sequence of priorities etc. The contractor shall follow such drawings strictly.

4.

Classification of earth : For purpose of earth work soil shall be classified as under Loose/Soft Soil Any soil which generally yields to the application of picks and shovels, phawras, rakes or any such ordinary excavating implements or organic soil, gravel, silt, sand, turf, loam, clay, peat etc. shall fall under this category. Dense/Hard Soil : Any soil which generally requires close application of picks, or jumpers or scarifiers to loosen it, such as clay, gravel and cobble stone etc. shall fall under this category.

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(Note : Cobble stone is the rock fragment usually rounded or semi-rounded having maximum diameter in any one direction between 80 & 300 m.) Mud : Mud is a mixture of ordinary soft soil and water in fluid or weak solid state. Soft / Disintegrated rock : (Not requiring blasting). This shall include the type of rock and boulders which may be quarried or split with crow-bars. Laterite and hard conglomerates also come under this category. Hard rock : (Requiring blasting ). This shall include the type of rock or boulder which for quarrying or splitting, requires the use of mechanical plant or blasting. (Note : Boulders is a rock fragment usually rounded by weathering, disintegration and or abrasion by water or ice having a maximum dimension in any direction of more than 300 mm. Hard Rock : (Requiring blasting but where blasting is prohibited). Under this category shall fall, hard rocks which though normally require blasting for their removal but blasting is prohibited and excavation has to be done by chiseling, wedging or other suitable method. 5. 6. General : The contractors shall deploy qualified experienced supervisory staff and shall also furnish all tools, plants, instruments, labor, materials, any temporary works, consumables and everything necessary, whether or not such items are specifically stated herein, for completion of the job in accordance with the requirements of specifications. The contractor shall carry out the survey of the site before starting excavation work and set properly all utility and service lines and establish levels for various works such as earthwork in excavation for grading, foundations, plinth filling, drains, cable trenches, water pipe lines, culverts, retaining walls etc. These will be checked by the Engineer-in-charge or his representative and thereafter recorded plan duly signed by the contractor shall be furnished to the Engineer in charge for his approval where after actual foundation excavations shall be undertaken. The excavation shall be done to correct lines and levels. This shall include where required, proper strutting and strong shoring to maintain excavation and impart safety against collapse of soil strata, erection and maintenance of sand barricades around excavations with warning signs displayed during night for safety purposes. The warning signs shall be with reflectory type paints. The rates quoted shall include proper stacking of excavated material in regular heaps, bunds, rip rap with regular slopes as directed by the Engineer-in-charge within all leads and leveling the same so as to provide natural drainage as directed by the Engineer-in-charge. As a rule all softer materials shall be laid along the center of the heaps, the harder and more resistant materials forming the casing on the sides and the top.

7.

8.

9.

83

(I)

Clearing The area to be excavated / filled shall be cleared of all fences, trees, plants logs, stumps, bushes, vegetations, rubbish, slush, pavement structure if any required etc. and other objectionable matter. If any roots or stumps of trees are met during excavation, they shall be removed,. The material so removed shall be disposed off as directed by the Engineer-in-charge. Where earthfill is intended, the area shall be cleared of all loose or soft patches, top soil containing objectionable matter/ materials before filling commences. No separate payment shall be made for such clearing works.

(II)

Precious objects, Relics, objects of Antics etc. All gold, silver, oil, minerals, archeological and other findings of importance or other materials of any description all precious stones, coins, treasure traces, relics, antiquities, similar things which may be found in or upon the site shall be the property of the owner. The contractor shall duly preserve the same to the satisfaction of the Engineer in charge and from time to time deliver the same to him.

(III) (IV)

Excavation for Structures : Excavation for structures shall consist of removal of materials for the construction of the foundations of approach structures retaining walls, abutment, and other similar structures in accordance with the requirements of specifications and as per lines and dimensions shown on the drawings or as directed by the Engineer-in-charge. The work shall include all necessary sheathing, strutting, shoring, de watering, bracing, draining and pumping,; the removal of all logs, stumps, shrubs and other deleterious matter and obstructions etc. for placing the foundations, trimming bottoms of excavation, back filling, cleaning up the site and disposal of all surplus materials. Setting out : After the site has been cleared, the limits of excavation for foundations shall be set out true to lines and sections as shown on the drawing or as directed by the Engineer-incharge. The contractor shall provide all labour, survey instruments and materials such as string, pegs, nails, bamboo's, stones, lime mortar, concrete etc. , required in connection with the setting out. He shall be responsible for the maintenance of bench marks and other marks and stakes as long as they are required for the work in the opinion of the Engineer-in-charge.

(V)

(VI)

Excavation : Excavation shall be taken to the width of the lowest step of footing or the pile caps bottom and the sides shall be left plumb where the nature of the soil allows it. Where the nature of the soil or the depth of excavated trench / pit does not permit vertical sides, the contractor at his own expense shall put up necessary shoring, structuring and planking or cut slopes to a safe angle or both with due regard to the safety of

84

personnel including laborers etc. and the works and to the satisfaction of the Engineer-in-charge. Non-compliance of these requirements would tantamount to negligence on the part of the contractor. The department does not except any liabilities for information given as regard to sub strata. (VII) De watering and protection : Where water is met with in excavation due to seepage, springs, rain or other reasons, the contractor shall take adequate measures such as bailing, out water by pumping, construction of diversion channels, drainage channels, bunds, and any other necessary works to keep the green concrete/pits dry when so required and to keep the green concrete/masonry protected against damage by or undermine its strength for any other reason whatsoever including erosion etc. In this regard and other details thereof, it shall be left to the choice of the contractor but subject to the approval of the Engineerin-charge. Approval of the Engineer-in-charge shall however, not relieve the contractor of his responsibility for the adequacy of de watering and protection arrangements and the safety of the works. Pumping from inside of any foundation enclosures shall be done in such a manner as to preclude the possibility for the movement of water through any freshly placed concrete. No pumping shall be permitted during placing concrete or for any period, of at least 24 hours there after, unless it is done from a suitable sump separated from the concrete work by a water tight wall or similar means. At the discretion of the contractor and at his cost, cement grouting or other approved methods may be used to prevent or to reduce seepage and to protect the excavation area. The contractor shall take all precautions in diverting channels and in discharging the drained water so as not to cause damage to the works or to adjoining properly. (VIII) Preparation of Foundation : The bottom of the foundation shall be leveled both longitudinally and transversely and stepped as directed by the Engineer-in-charge. Before the footing is laid, the surface shall be slightly watered and rammed. In the event of the excavation having been made deeper than that shown on the drawing unless otherwise ordered by the Engineer-in-charge, the extra depth shall be made up with concrete / masonry of the foundation grade at the cost of the contractor. Ordinary soil filling shall not be used for the purpose to bring foundation, to level as per the design. When rock or other hard strata is encountered, it shall be freed of all loose and soft material cleaned and cut to a firm surface either level, stepped or serrated as directed by the Engineer-incharge. If there are any slips or blows in the excavation, these shall be removed by the contractor at his own cost.

85

(IX)

Back filling : To the extent available, selected surplus soils from the excavation shall be used as backfill as may be directed by the Engineer in charge and after obtaining his concurrence before actually taking any action in the re-use of these excavated stuff from foundation. Fill material shall be free from clods, salts, sulphates, organic or other foreign deleterious materials. All clods of earth shall be broken or removed. When the excavated material is mostly rock, the boulders shall be broken into pieces not larger than 150 mm size mixed with properly graded fine materials consisting of murrum or earth to fill up the voids and the mixture used for filling. If any selected fill material is required to be borrowed, the contractor shall make arrangement for bringing the material from outside borrow pits. The material sources shall be subject to the prior approval of the Engineer in charge. The contractor shall make necessary access roads to such borrow areas at his own cost, if such access roads do not exist. Back filling of the foundation trenches / pits shall be done as soon as the foundation work has been completed to the satisfaction of Engineer in charge and measured but not earlier than the full setting period of the concrete or masonry work. Back filling shall be carried out in such a manner as not to cause undue thrust on any part of the structure. Annular space around foundations shall be back filled with coarse sand after clearing it of all debris and in layers of 150 mm. loose thickness, watered and compacted to the satisfaction of the Engineer in charge and up to the original surface level. The remaining back filling shall be done in like manner as aforesaid, using excavated earth if approved or by borrowed earth from approved source.

(X)

Disposal of surplus excavation materials : All the excavated materials shall be the property of the client. Where the excavated material is directed to be used in the construction of the works for general grading, planning, filling or in embankments the operations shall be so arranged in such a manner that the capacity for cutting, haulage and compaction area nearly the same. Prior approval for the same shall be obtained from the client / Engineer in charge. The remaining surplus or unused excavated stuff, shall be disposed off as may be directed by the Engineer in charge.

(XI) Measurement and rates : The measurement shall be generally conforming to IS : 1200 part I, unless otherwise specified. Measurement for excavation of foundation footings shall be as required for the exact width, length and depth as shown or figured on the drawings or as may be directed by the engineer in charge. If taken to a greater width, length or depth than shown or required, the extra work, occasioned thereby shall be done at the contractor`s expenses.

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The dimensions of the trenches and pits shall be measured correct to the nearest cm. and cubical contents worked out is cubic meters, correct to two places of decimal. Measurements of filling excavated earth or sand in foundations shall be measured for the purpose of payment in cubic metre. The dimensions of the filling shall be measured correct to the nearest centimetre and cubical contents worked out in cubic meters correct to two places of decimal. Rate for earth work shall include the following : 8. Excavation and disposing surplus earth as directed by the Engineer in charge. 9. Setting out works, profiles etc. 10. Site clearance such as clearing of vegetation, shrubs, brushwood etc. 11. Leaving "Deadmen" or "Tell Tales" and their removal after measurement. 12. Bailing/pumping out water in excavation from rains, sub soil water etc. 13. Protection works, temporary supports for safety, by undertaking if need be to existing services, i.e. drains, water mains, cables and other utility services met with during the course of excavation. Removal of electricity and / or telephone cables, posts etc. as necessary, shall be arranged by the Engineer in charge. 14. Forming (or leaving) steps inside deep trenches and their removal : 15. Removing slips or falls in excavation 16. Fencing and/or other suitable measures for protection against risk of accidents, as approved by the Engineer in charge. 17. Excavation for insertion of planking and strutting wherever required. 18. Back filling the trenches partly by sand & partly by selected excavated material.

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(3) 1.0

SPECIFICATIONS FOR PILE FOUNDATION WORKS : General : 1 These specifications cover reinforced cement concrete driven / bored cast in situ piles including all related items of work like sand filling in the holes left after casting the piles, chipping off a small length at the top, load test on a single and/or groups of piles, taking cores for ascertaining strength of concrete in pile etc. The relevant clauses of the specifications for concrete plain and reinforced as per relevant IS codes, fall within the scope of these specifications. Extent of Contractor's services : The work to be provided for by the contractor, unless otherwise specified, shall include but not be limited to the followings :(a) Furnish all labor, supervision, services, materials, piling equipment, tools, plants, transportation etc. required for the work for pile foundations conforming to the detailed drawings or as may be specified, including all surveying and setting out arrangements necessary for fixing correct locations of piles etc. The identification plan showing the proposed sequence of piling will be prepared on the basis of plan furnished by the engineer and get the same approved from the competent authority before commencing pile work. Submit in prescribed form detailed daily report of piling work done giving all information as required by the Engineer ­ in ­ charge. Furnish details of the pile driving boring and casting equipment giving all salient dimensions and loads. Carry out tests to the satisfaction of the Engineer-in-charge including casting and dismantling test caps if done and submit the test results in prescribed data sheet as given under Appendix ­ D in pursuance to provision under Clause 7.13.2 of IS. 2911 (Part I/Sec 2) 1979. Make necessary earthwork and approaches for movement of the equipment for execution specified, and cleaning up the works area etc. Provide all necessary work mentioned under the "Technical Specifications for concrete, plain and reinforced: as per relevant IS codes as may be applicable.

2

(b)

(c)

(d)

(e)

(f)

(g)

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3

Work provided by others : No work under these specifications, will be provided by any agency other than the contractor unless specifically mentioned otherwise elsewhere in the contract.

4

Codes and specifications applicable : The following Indian standard codes and specifications, unless otherwise specified herein, shall be applicable. i) IS : 269 Specifications for ordinary and low heat port land cement. (All parts) Specifications for mild steel and medium tensile steel bars and hard drawn steel wire for concrete reinforcement. Specifications for portland and reinforced concrete. Code of practice for plain and reinforced concrete. Method of tests for soil (Part ­ I) Code of practice for design and construction of pile foundations part I (all sections) concrete piles. Code of practice for management of civil engineering works part I pile foundation. Safety code for piling and other deep foundations.

ii)

IS : 432

-

iii) iv) v) vi)

IS : 455 IS : 456 IS : 2720 IS : 2911

-

vii)

IS : 3385

-

viii) IS : 5121

-

Other IS codes pertaining to the items of piling work and not listed above shall also deem to come under the purview of this clause. The provision of special conditions of contract those specified on the execution drawings or other specifications issued in writing by Engineer-in-charge shall also form part of these specifications. All codes and standards referred to in these specifications shall be of the latest version. Where IS codes are not available, a reference to British Standards / Codes will be made. 5 Conformity with designs : The contractor will prepare check list in approved Performa which will be called "Pile Installation Card. At each important stage of the work as decided

89

by the Engineer-in-charge for correctness and conformity with the design, specifications and drawings, before allowing the next phase of the work to commence. These intermediate checks and approval by the Engineer-in-charge will not, however absolve the contractor from his total responsibility to execute the work as per the specifications and drawings and to remove and / or rectify all work which is defective or inaccurate. 6 Soil Data : The information as to the bore hole log details and soil investigation report, are given in good faith and for general guidance only. The client will not be responsible for any discrepancy or inaccuracies therein and shall not entertain any claim whatsoever from the contractor on the basis if the same. 7 Other Data : Nothing contained in this contract documents or these specifications shall relieve the contractor from the responsibility of obtaining the approval from the Engineer-in-charge, the pile installation procedure to be followed by him. During the execution of the work, should any error or inconsistencies appear in any of his contract documents, the contractors shall not proceed with the work before obtaining instructions / clarifications from the Engineer-incharger. 8 Site Inspection : The contractor is directed to inspect the site and satisfy himself about the working conditions, availability of approach, facilities of water, power utility services etc. and he shall be deemed to be aware of all the site conditions in so far as the requirements of carrying out pile foundations is concerned. 2.0 Materials : 1 General : All materials whether incorporated in the works or used temporarily for executing will be of the best approved quality conforming to the latest Indian Standard Specifications. Concrete & Reinforcement : The relevant clauses in the specifications for concrete, plain and reinforced, enclosed are applicable. If no specific specifications are enclosed, the relevant IS Codes are deemed to form part of this specifications.

2

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3

Drilling Mud (Bentonite) : (a) General : For soft soils if required drilling mud (bentonite) will be used. The specification of the same are as under. Drilling mud corresponding to basic properties given under appendix A under Clause ­ 4.3 of Part I ­ IS ­2911 Sec ­ 2 shall be used to keep the sides of the bore holes established. Mud shall have THIXOTROPIC Properties i.e. gel forming property. The drilling mud shall have such properties as to permit the formation of filter cake on the sides of the bore holes, the thickness of which would depend on the nature of the subsoil deposit. Sodium based bentonite have ideal properties suitable for use as drilling mud. (b) Specification / Properties The suspension used for pilling work shall satisfy the following requirements. Fresh sodium based bentonite shall have : (a) The liquid limit of bentonite when tested in accordance with IS 2720 (Part V) shall be more than 300 percent and less than 450 percent. (b) The PH value of 5% bentonite suspension shall be between 8 & 11.5%. The free water standing after 24 hours of 10% suspension of 100 cc be only a thin veil of water. Sand content of bentonite powder to be not more than 7 percent. The Marsh viscosity of 5% suspension when tested by Marsh cone should be around 37 seconds. The 10 minute gel strength of fresh 5% bentonite to be between 10 to 75 Kg. Sq.m. The density of the bentonite solution should be above 1.11.

(c)

(d)

(e)

(f)

(g)

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(c)

Reuse : During boring operations fresh suspension gets contaminated with bored soil and gradually becomes heavy. This contaminated bentonite may be reused depending upon the manner of boring, type of strata encountered and the specific gravity of the contaminated bentonite. It is essential to check the specific gravity of the bentonite in the bore holes before concreting. The contaminated bentonite may be collected in a suitable receptacle and allow the heavier practices to settle and the slurry washed before reuse.

(d)

Disposal : The drilling mud shall be suitably disposed off without causing any nuisance to the surrounding area in a manner to be approved by the Engineer-in-charge.

4

Storage of Materials : The relevant clause pertaining to storage of materials under specification for concrete plain, reinforced as per relevant IS Codes will apply.

3.0

Installation : All Installation requirements for bored pile shall be accordance with IS : 2911 (part I) sec-2 and as supplemented or modified herein or by other best possible standards to the satisfaction of the Engineer-in-charge where the specific requirements mentioned in this section of the specification wherever not covered fully in all aspects. 1. General : The tenderer is supplied with details of bore hole log or any other data indicating the probable nature of the soil strata expected at the site. All piles will have to be bored / driven to the required founding level as shown on the drawings or as may be decided by the Engineer-in-charge. 2. Type of pile : (i) Type All piles shall be driven or bored cast-in-situ concrete piles reinforced as per design requirements. For any type of pile adopted and in spite of different methods of installations, concreting, etc. the load carrying capacity of single and group of piles shall not be less than the design loads indicated on the drawings. Diameter :

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(ii)

The casing / boring shall be of such diameter as to give the necessary specified nominal diameter of the concrete pile. In general, the measurement of the diameter of the pile shall be as follows :(a) For cast in situ bored piles, employing temporary casing withdrawn during the placing of the concrete, the nominal diameter shall be the outside diameter of the temporary casing. For cast in situ bored piles with permanent liner, the nominal diameter shall be the inside diameter of the permanent casing left in place. For partly lined or unlined bored cast in situ piles using drilling mud, the nominal diameter shall be the inside diameter of the guide liner (temporary or permanent) The size of the cutting tool shall not be less than the diameter of the pile by more than 75 mm. The contractor may however be required to demonstrate to the Engineer-in-charge, if so called for by him, that the diameter of the bore hole for its full length is not less than the nominal diameter specified and this may be done by lowering a guide ring having a diameter equal to the nominal diameter of the pile into the bore hole before concreting the pile or lowering the reinforcement cage.

(b)

(c)

(d)

(e)

3.

Identification of Pile : A plan showing clearly the designation of all piles by identification system shall be filled with the Engineer-in-charge before installation of piles is started, if so desired by the Engineer-in-charge.

4.

Piling Sequence : The piles shall be installed in such a sequence that the carrying capacity of previously installed piles is not reduced or there is no appreciable upheaval of ground causing unusual soil resistance to rest of the pile driving or the soil is not flowing laterally during driving operation. The Engineer-in-charge shall decide on the sequence of the groups of piles that the contractor shall undertak for construction and the contractor shall have to follow this sequence.

4.0

Workmanship & Construction of Piles :

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(a)

General : (1) Piles shall be constructed by acceptable method which leaves their strength unimpaired and which develops and retains the required bearing resistance. Equipment and the method of construction of the pile shall be such that the pile is installed in its proper position alignment and truly vertical. Piles construction shall be carried out by using standard bored piling process. Piles shall be cased with mild steel liner of required thickness which shall be provided up to depth shown on the detailed working drawing supplied by the Engineer-in-charge. For uncased piling for boring beyond the depth of M. S. casing shall be done using bentonite slurry to prevent the subsoil from caving. This shall be of approved quality and standards as prescribed under detailed specification for pile foundation work given in the document. The boring shall start from the level as indicated in the drawings. Further, for all types of bored piles including the use of open-end casing, the tenderer shall submit, in view of sub-soil water being present in the bore hole, particulars of concrete placement method so as to reduce to a minimum, the contact of fresh concrete with ground water. It is imperative that the bore hole shall exclude any subsoil material before placement of reinforcement and concrete inside the casing or bore hole. Details of the concrete placing equipment and/or any other process intended to be used by the tenderer for such conditions, shall be fully described. The reinforcements of the pile should project out, above the top level of the pile by a minimum length of 600 mm or as specified, to be later or bent and embedded in the pile cap concrete. Concrete shall be placed and compacted at least up to 300 MM above the cut-off level and the ground level shall be filled up with sand so that the next pile does not move out of place during construction. To construct the pile cap, the ground will be excavated to expose the top portion of the piles, which will be dismantled neatly up to the cutoff level, removing all cracked, loose and unsound concrete. The top surfaces of the piles will be kept rough and treated by keeping wet and application of near cement coat, before concreting of pile cap to ensure bond with the pile cap concrete in which they will be ultimately embedded. In case, the casing is directed to be removed, care shall be taken to ensure that there is no gap left in the concrete of the pile and that the reinforcement are not displaced.

(2)

(3)

(4)

(5)

(6)

(7)

(8)

5.0

Quality control :

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The contractor shall maintain quality control for all items of work including materials and every stage as may be directed by the Engineer, to ensure compliance with contract specifications and shall maintain and submit to the Engineer, records of the same. The quality control requirements stipulated under the specifications for "Concrete Reinforced and Plain" will apply wherever relevant. In addition, the requirements will include but not be limited to the following: (a) (b) Location & Plumb Driving : Control survey for accuracy in plan and check for verticality. : Correlation of weight of hammer, length of strokes, number of strokes per minute and rate of penetration. : Preventation of any cave-in of subsoil. : Check inside casing or boring as the case may be, rein-forcement cage, concrete mix, placing, consolidation. : Taking core for ascertaining homogeneous and compactness of concrete. : As prescribed under these documents if any.

(c) (d)

Boring Casting of piles

(e) (f) 6.0 (a)

Inspection of pile Load tests General :

Concrete in Piles : This shall conform to the specifications for cement concrete- plain and reinforced as per relevant IS codes to the extent it has been referred to or applicable for this purpose. The concrete shall be as per design mix specified & of approved quality. The entire depth of the pile shall be concreted in one operation without stoppage. All concreting operation for piles shall be carried out during day time only. Exposed portions of piles shall be cured for at least 10 days from the date of casting. When installing the piles in groups, sufficient time shall be allowed for freshly poured concrete in pile to set before installing adjacent piles. The Engineer-in-consultation with the contractor shall determine the installation sequence and time schedule to ensure that freshly concreted piles are not damaged due to installation of adjacent piles. (b) Materials : Unless otherwise called for on the drawings or in the bills of quantities, the concrete shall be of grade M35 and shall have a cement content not less than 380 Kg/Cu.m. for concrete placed in the dry and 418 Kg/M3 for concrete placed under water by tremie method. Concrete for piles in alkali soils / alkaline waters shall have a minimum cement content of 390 Kg/Cu.m. and in this case sulphate resistance cement as may be directed by the Engineer may be used. Cement shall be ordinary port land cement conforming to I.S. : 269 unless specified otherwise. Maximum size of aggregate shall be 20 mm. Volume check :

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(c)

Concreting shall start as soon as possible after driving is closed and pile tube or completion of boring. Concrete shall be so placed as to fill the entire volume of the hole without segregation and formation of voids caused by faulty consolidation or entrapped air. The volume of concrete placed shall be observed in the initially cast piles and the average figure obtained shall be used to check whether there is undue deviation in concrete consumption and if so the same shall be brought to the notice of the Engineer without further work on piling. (d) Consistency : Where the concrete is cast in place in an open-end tube, its consistency shall be suitable to the method of compaction employed in the formation of piles. If necessary concrete shall be as dry as possible to minimize shrinkage and the possibility of cement being washed down by flow is withdrawn. plasticising agents may be used by the contractor to improve the workability but the Engineer may be furnished with proof that the proposed plasticising agent has no adverse effects on the hardened concrete of reinforcement. Care shall be taken against segregation of concrete while passing through the reinforcement cage, and against inflow of soil and water during withdrawal of the tube, if such method is adopted by maintaining sufficient head of concrete inside the tube. The extraction of casing shall not cause any shearing or necking of the poured concrete thereby reducing the capacity of the piles. If it becomes necessary to place concrete through water, this should be done with special equipment and necessary precaution in conforming with contractor's specification as may be got approved by the Engineer. As per Clause 6.3.4 of IS 2911 (Part I /sec 2) slump of concrete shall range between 100 to 180 mm. depending on the manner of concreting. (e) Testing : At least one test shall be made for every 15 m3 of concrete and not less than six cubes shall be cast on each day of concreting of piles. Three of the six cubes constituting one test shall be tested on the 7th day from casting the cubes and the remaining three cubes shall be tested on the 28th day after casing. Tests of all cubes shall be carried out in presence of Engineer-incharge or his representative. (f) Acceptance

7.0

The Engineer reserves the right to reject any pile of deficient concrete strength. Such rejected piles shall be replaced by the contractor at his own cost who shall also bear the additional cost of widening the pile cap resulting from the grouping if the piles as result of replacement of piles. The Engineer also reserve the right to order a change in the mix design and/or water cement ratio to obtain the specified strength of workability if so considered necessary during execution. Reinforcement in Piles

96

TMT Fe ­ 415 reinforcement conforming to IS : 432 , IS : 1139 or IS : 1786 grade suitable for cement concrete as per IS specifications for reinforcement concrete for general building work shall be applicable for this specification to the extent it has been referred to or acceptable. Reinforcement used in cast in situ piles shall be made up into cages sufficiently well wired or span welded to withstand handling without damage. The bars shall be so spaced as not to offer obstruction in placing concrete. Care shall be taken to preserve correct cover and alignment of reinforcement throughout the operation of placing the concrete. Any distortion or displacement of reinforcement during the compaction of concrete or while extracting the tube, shall be avoided. Joints in longitudinal reinforcement bars, if unavoidable, shall be made by lapping and the laps shall be tack welded to prevent distortions of the reinforcement cage. The lap length of longitudinal bars beyond the pile cut-off level shall be as shown on the drawings. Unless otherwise specified in the drawings, the lateral reinforcement shall consist of a helix made from 8 mm. dia. bars at a pitch of 150 mm. through out the length of the reinforcement cage. Concrete cover over all reinforcement including lateral helical reinforcement shall be 50 mm. unless otherwise specified or shown on the drawings. Care shall be taken to preserve the correct cover and alignment of reinforcement free from any twist, throughout the whole operation of placing the reinforcement in the bore hole and placing the concrete. 8.0 Dowels : The contractor shall provide necessary dowels is as directed by the Engineer if so required. 1. Inspection For cast in situ, bored, piles, the contractor shall get the bore hole inspected by the Engineer in charge for proper plumb, location, compaction of founding surface, pressure of water and other requisites. The diameter of the hole may also be checked in the case of bentonite slurry bored pile by lowering a guide ring through the depth of the hole. The depth of the bore hole shall be measured by means of a chain to which a plumb bob weighing not less than 250 gm. Is attached. The contractor shall provide all the equipment required for the above inspection and he shall co-ordinate this work with the Engineer in charge. Concreting shall start only after the Engineer has approved the bore hole. All facilities, equipment and labor required for inspection by the Engineer mentioned above shall be provided by the Contractor promptly and free of cost.

97

2.

Record of Installation of Piles : A joint record shall be maintained by the contractor in a Performa approved by the Engineer, of the entire penetration for every pile and the behavior of such pile during its entire process of construction as per IS 2711 (part I) Section 2. These records shall be submitted to the Engineer-in-charge regularly as the job progresses. Any sudden change in the rate of penetration which can not be ascribed to the nature of the ground or any deviation from the designed location, alignment or load carrying capacity of any pile or any upheaval or subsidence noticed on any pile driven under this contract or already existing, during construction of other piles, shall be promptly reported to the Engineer-in-charge and adequate corrective measures shall be taken free of any charge as may be decided by the Engineer-in-charge. The records of such additional borings or other subsurface information that were obtained during the process of installation shall also be filed with the Engineer in charge.

3.

Test Pile The contractor may have to construct test pile if so directed by the Engineer in charge, and ascertain the load carrying capacity by test, as may be required by the Engineerin-charge, before he starts systematic piling operation at locations indicated. For this purpose, the pile construction process shall be the same as in usual piling process to be followed on this job. No extra cost shall be payable for test pile so ordered.

4.

Pile capacity, quality and tolerances (a) Working load on piles General specifications of pile foundations and its details are given in the tender for general information. The capacity of the piles in place shall be verified by conducting "Routine Load Tests" on working pile as describe hereinafter. For bored piles, the characteristics, thickness and inclination of the subsoil strata under laying the pile points shall be taken into account for estimating the extent of settlement of the pile due to consolidation of the soil below, while evaluating the allowable load on pile. The contractor shall submit his findings on the allowable carrying capacity of a single pile from the load test. This shall then be reviewed by the Engineer and the allowable carrying capacity of each pile and group piles shall be decided by him in consultation with the contractor. The decision of the Engineer in charge regarding the allowable load on the piles shall be final. The layout and number of piles and the size and details of the pile caps may have to be revised if the decided allowable loads on each single pile in a group differ from the above value and the contractor shall have to do the work according to the revised design and drawings at no extra cost or expenses to the client.

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If the load test results indicate that the piles, already constructed are deficient in load carrying capacity, such deficiencies shall be made good by the contractor in the manner as may be approved by the Engineer, at no extra cost to the client. (b) Quality : The contractors shall guarantee the full cross section of the pile for its entire length and also guarantee against the occurrence of necking or wasting, bulging, spilling of pile sheaft concrete and similar defects which will impair the strength and durability of the pile. (c) Tolerances : The pile shall be installed truly vertically as per the detailed design required within the following permissible tolerances. The position of the pile at the level of the bottom of the pile cap shall not very more than 75 mm in any direction from the positions specified in the drawings. The alignment shall not vary by more than 2% (about 1 degree) from the vertical axis or the specified batter. The above two allowances, however, shall not be cumulative. (d) Defective Piles Piles that are defective or where the deviation in alignment of the tube or base is more than that tolerance specified, shall be pulled out or left in place as per the directions of the Engineer in charge. Additional pile shall be driven to replace them and/or the pile cap shall be redesigned and built at no extra cost to the client. In case the pile / casing can not be removed. It shall be cut as may be directed by the Engineer in charge. Voids resulting from rejected borings or extraction of the pile or casing shall be filled with gravel or sand unless other piles are installed in such voids. The contractor shall also not be paid for any expenses incurred by him, in extracting and rejected pile / casing and refilling if so required. 5. Idle period The phasing of construction and movement of plant shall be done as may be directed by the Engineer. The phasing may involve some extra movement of the plant or some idle period during test pile operation etc., but the contractor will not be entitled for any claim due to this reason and all rates quoted by him shall include the same. However, during the testing of piles and other holdups, pile driving operation may be allowed on other piles, if considered acceptable and if so decided by the Engineer in charge with a view to minimise idle time. If due to change in loading elevation of any other alternations, modifications become be entitled to any claim whatsoever, for such modifications in the pile layout, during the progress of work including claims for any idle labor or tools and plant on that account.

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9.0

Testing acceptance Criteria : 1. Static Load Test (i) General In order to determine the carrying capacity of pile, static load tests shall be undertaken by the contractor on single pile as indicated on drawings. Piles to be tested shall be cast in situ at least 30 days before loading. Before any load test is made, the proposed arrangement of the structure and kentledge to be used in making the load test shall have to be approved by the Engineer in charge. All load tests shall be made under the supervision of the Engineer in charge. All responsibility for conducting the test safety and properly shall rest with the contractor.

(ii)

Preparation of pile head for test The pile head shall be chipped off carefully till sound concrete is met with and the reinforcement shall either be cut off for initial test or bent sideways and the top shall be capped by means of a suitable RCC cap. A bearing plate may be embedded on the top to receive the loading jack.

(iii)

Procedure for Load Testing (a) The test shall be carried out by applying a series of vertical load increments on the pile. The load increments shall be equal to about 20% of the estimated working load on the pile. The test load may be applied by means of hydraulic jack with pressure gauges, with remote pumps acting against rolled steel joists or suitable load frame obtaining reaction reached from : (i) Kentleged heavier than the required test load, placed on a platform supported clear of test pile. Any existing structure of suitable construction may be used as a kentledge. The center of gravity of the kentledge shall generally be on the axis of the pile and the load applied by the jack shall also be concreting with the pile axis. OR (ii) Tension piles or suitable anchors. The center to center distance between the test piles and the anchor piles shall be a minimum of five times the diameter of the test pile. Working piles shall not be used as anchor piles.

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(b)

(c)

The reaction to be made available for the tests shall be at least 25% more than the final test load proposed to be applied. The settlement shall be recorded at least with three dial gauges for single piles and four dial gauges for group of test piles and positioned at equal distances along the periphery of the pile and held normally by datum bars resting on immovable supporters at least 5 x D (subject to a maximum 2.5 m) away from the test pile periphery where D is the diameter of the test pile shaft. Each stage of loading shall be maintained till the rate of movement of the pile top is less than 0.1 mm per hour in sandy soils and 0.02 mm per hour in clayey soils for this purpose, the soil met with at the tip of the pile shall be considered. The estimated safe working load in the pile shall be kept in position for at least 24 hours and during this period settlement regarding shall be recorded every hour. Each stage of application of the load increment shall be smooth and free from jerks. Time and settlement observations shall be made at the commencement and completion of the load increment. Settlement observations shall be made when each increment of load had been maintained for at least 15 minutes. The loading shall continue for the specified load for the type of test in question or failure of the pile should this occur earlier. After the proposed working load had been applied and from each increment thereafter, the test shall remain in place until there is no settlement in two hours period. The total test load shall remain in place until settlement does not exceed ½ of a millimeter in 48 hours. The total test load shall be removed in decrements not exceeding 1/5 of the total test load. The rebound shall be recorded after each decrement is effected and the final rebound shall be recorded, 24 hours after the entire test load had been removed. A complete record in triplicate shall be filed with the Engineer or the loads and readings obtained, duly verified and countersigned by the Engineer.

(d)

(e)

(f)

(g)

(h)

(i)

(j)

(iv)

Costs The tested piles will be used as usual foundation piles if it is a routine test and no extra payment shall be made except for load test on this pile.

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Tenderer shall include cost of all materials, accessories and labor including construction of pile top loading platform and dismantling the same, for the load test. (v) Acceptance Criteria (I) For Initial Load Tests (a) Two thirds of the final load at which the total settlement attains a value of 12 mm unless it is specified that a total settlement different from 12 mm is permissible in any given case taking into consideration the nature and type of the structure. In the latter case, the load corresponding to the actual total permissible settlement of the pile head shall be the safe load. (b) Fifty percent of the final load at which the total settlement equals 10% of the diameter of the pile.

(II)

The safe load on a group of piles shall be the least of the following (a) Final load at which a total settlement attains a value of 25 mm unless a total settlement, different from 25 mm is acceptable for a given case on the basis of type and nature of the structure. Two thirds of the final load at which the total settlement is 40 mm.

(b) 2.

For Routine Load Tests The tests shall be considered as successful, provided that ­ (a) (b) (c) The total settlement at the full test load of 1.5 times the proposed design load for the pile is not more than 12 mm. The net settlement on removal of entire test load is not more that 6 mm. Load settlement curve shall not indicate failure of the pile within the above range of settlement.

3.

Cyclic Load Test Cyclic load test may have to be carried on the test pile if directed by the Engineer. This load test shall be carried out as per Cl. 6.3 of IS : 2911 with procedure laid down in Appendix A in the said IS : 2911 (Part IV) 1985. Loading shall be continued till, there is no marked progressive settlement of the pile. The rate for such item shall be decided as may be matually agreed upon with the Engineer in charge.

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4.

Lateral Load Test (i) Procedure for Load Test (a) This test shall be conducted as far as possible at the cut off level of the piles. In case of pile groups the test shall be conducted after providing caps such that the required conditions of actual use fulfilled. The test may be conducted by introducing a hydraulic jack, with gauge between two piles or pile groups under test or the reaction may be suitably obtained otherwise these tests may also be done by applying lateral pull, by a suitable set up. If it is conducted by jack located between two piles or groups, the full load imposed by the jack shall be taken as the lateral resistance of each pile or group. The loading should be applied in increments of about 20% of the estimated safe load. After applying each increment of load, the next increment of load shall be applied after the rate of settlement of mm. in sandy soil and 0.02 mm. per hour in clayey soil or two hours time whichever is earlier. Displacements shall be measured by using at least two dial gauges spaced at 30 cm. and kept horizontally one above the other on each pile. Where it is not possible to locate one of the dial gauges in the line of jack axis, then the two dial gauges may be kept at a distance of 30 cm. at a suitable location from similar triangles.

(b)

(c)

(d)

(ii)

Acceptance Criteria The safe lateral load on a pile shall be taken as the least of the following: (a) (b) (c) Fifty percent of the final load at which total displacement increases to 12 mm. The load at which the displacement is equal to 5 mm. Load corresponding to any other displacement specified and dictated by performance requirement.

5.

Pull out test : Pull out tests may be carried out in special cases, if required to determine friction and ensure that the construction method and equipment used by the contractor produces sound piles of desired depth and specifications.

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(i)

Procedure for pull out test : (a) Uplift force on the piles may preferably be applied hydraulic jacks with calibrated gauges and using suitable set up approved by the Engineer. The test pile shall have adequate steel reinforcement to withstand pulling loads. Additional reinforcement may be provided in the pile for this purpose. Pull out loads shall be applied without shock by suitable mechanical means, in stages of 2 ½ tonnes until a peak value of frictional resistance is reached. A graph of pull out force and corresponding rise of pile top shall be plotted.

(b)

(c)

(ii)

Acceptance Criteria : For initial load, tests, the load applied shall be two times the estimated safe load on the pile. The safe load shall be taken as the least of the following : (a) (b) One half the load at which the displacement is 12 mm. or corresponding to a specified displacement. One half the load at which the load displacement curve shows a clear break.

Routine test load shall be carried out to 1.5 time the allowable load, pull out load in the pile or the load corresponding to 12 mm. pull whichever is earlier. (iii) Defective Piles : In case it is observed that the piles cast are not sound and there is doubt about compactness of concrete, reduction in diameter, exposure of steel, undesirable information or any other flaws which the Engineer in charge considered improper, the contractor shall modify or improve his method of construction and ensure by casting and constructing further piles at his own cost before he is permitted to go ahead with the construction. 6. Pile cut off, Excavation & clean up : (i) Pile cut off (a) All piles shall be concreted to a level 150 mm. to 450 mm. above the specified pile cut off elevation which shall be 8 cm. above the bottom of the pile cap. For piles cast by tremie method, in bentonite stabilized bore holes, this level of concreting above pile cut off elevation shall be not less than 600 mm.

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(b)

Before casting the pile cap, this excess concrete shall be cut off up to pile cut off elevation. In case sound concrete is not met with at such elevation, the piles shall be cut to such elevation where sound concrete is met. Piles shall be cut off at level and true to elevation shown or specified on the drawings. Care shall be taken not to damage the reinforcement or the concrete below cut off elevation during such stripping operations. Where stripping has been done to a level lower than the specified cut off elevation to obtain dense and sound concrete, the contractor shall build up the pile up to cut off elevation at his own cost.

(c)

(d)

(ii)

Excavation (a) Excavation by the Contractor for pile cut off shall be done to the depth specified on the drawings. These excavations shall be coordinated with the Engineer - in ­ charge so that they will remain open for a minimum possible time and the pile cap concrete is placed as soon as possible thereafter. Any additional excavation carried out due to pile stripping being required to be carried out below the cut off elevation to obtain dense concrete and the back filling of all such excavation shall be done by the Contractor at his own cost.

(b)

(iii)

Clean up (a) Upon completion of the pilling work, all casing equipment, construction tools, protective coverings and debris resulting from the pilling operations shall be removed from the works site with the permission of the Engineer - in ­ charge All excavated material and left over drilling mud shall be disposed off, as may directed by the Engineer - in ­ charge , away from the site and the cost of all such cleanup operations shall be included by the Contractor in his rates for piling work and no separate payment will be made for the same.

(b)

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7.

Rates and Measurements : 1. Rates The rate for the item of installation of piles shall include the cost of all materials consumed in the work or incidental to it as well as testing of materials, including the cost of plants and equipment, labour, supervision, transport, taxes, insurance, royalties and revenue expenses, securities and safety measures, approaches, power, fuel, lubricants, services, preliminary and enabling works, camps, stores etc. and overheads and profits etc. complete. The rate shall include the entire cost for carrying out boring, supplying and installing steel and concrete including pouring in concreting up to above cut off level for cast in situ bored pile as specified and subsequently dismantling and removing the same up to designed level of pile top. The specifications cover the supply of complete piling work. Should there be any details of construction or materials which have not been referred to in the specifications or in the Bill of quantities and drawings but the necessary for which may be implied or inferred there from, to which are usual or essential to the completion of the work in the trades, the same shall be deemed to be included by the contractor in the Bill of Quantities. 2. Measurements (a) For the purpose of measurements and payments, the length of the pile shall be measured from the tip of the pile to the bottom of the pile cap for each diameter of the pipe installed in position as per these specifications. The 8 cm. length of pile tip projecting into the pile cap shall not be measured and also shall not be deducted from the quantity of the pile cap concrete. The rate shall be based on the assumption that the boring of the pile is done by means of a normal bailer through soft soil such as clay, silt, sand, soft and hard murrum, gravel and boulders not more than 150 mm. in diameter or a mixture thereof. The rate shall include the cost of providing and placing concrete of specified proportions or strength as specified. Measurement of length for payment will be done by letting down a tape with a heavy weight attached at the end, through the hole left by driving, before the reinforcement cage is lowered and concreting commences. The additional depth driven and covered with the show or any other materials like aggregates or concrete will not be considered for payment. Payment will be made for the specified depth below the cut off level as measured as per above procedure, whichever is less.

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(b)

(c)

Empty boring through overburden and through soils of all types between the tip of piles and the bottom of pile cap shall be paid per meter for empty bore. Reinforcement placed in the pile shall be paid for separately for the actual quantity of reinforcement placed in the pile exclusive of wastage, avoidable, overlaps, couplings, and welded joints spaces bars and annealed steel wire for binding as stipulated in the relevant specification for reinforcement. Payment for load tests shall be made only for those tests ordered by the Engineer and the payment shall be made only for the completed load test provided the pile tested passes the load test, otherwise the cost shall be borne by the Contractor.

(d)

(e)

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(4)

SPECIFICATIONS FOR PLAIN CONCRETE & REINFORCED CONCRETE: General : These specifications cover the requirements of plain, reinforced concrete for use in various components of structures. For all items of concrete in any portion of the structure or its associated works, controlled concrete shall be used unless otherwise specified, when ordinary concrete of the mix shown on drawings or as directed by the Engineer in charge may be used. The provision of the latest revisions of the following I. S./ I.R.C. / M.O.S.T. codes shall form a part of this specification on the extent they are relevant. I.S. I.S. I.S. I.S. I.S. 226 269 280 303 383 Specification for structural steel (Standard Quality) Specification for ordinary and low heat port land cement. Specification for mild steel wire for general engineering purposes. Plywood for general purposes. Specification for coarse and fine aggregates from natural sources for concrete. (All parts) ­ Specifications for mild steel and medium tensile steel bars and hard drawn steel wire for concrete reinforcement Part ­ I Mild steel and medium tensile bars. Part ­ II Hard drawn steel wires. I.S. I.S. I. S. I. S. I. S. I. S. I. S. I. S. I. S. 455 456 460 516 650 1139 1199 1200 1343 Specification for port land slag cement. Code of practice for plain and reinforced concrete Specification for test sieves (All parts). Methods of test for strength of concrete Standard sand for testing of cement. Hot rolled mild steel, medium tensile steel and high yield strength steel deformed bars for concrete reinforcement. Methods of sampling and analysis of concrete. Method of measurement of building and civil engineering works. Code of practice for prestressed concrete.

I.S.

432

108

I. S. I. S. I. S.

1489 1542 1566

Specification for portland pazzolana cement. Sand for plaster. Specification for hard drawn steel wire fabric for concrete reinforcement. Dimensions for round and square steel bars for structural and general engineering purposes.

I. S.

1732

I. S.

1785

Plain hard drawn steel wire for prestressed concrete (part I) cold drawn stress-relieved wire. Specification for cold worked steel high strength deformed TMT bars Fe ­ 415 for concrete, reinforcement. Batch type concrete mixture. Specification for structural steel (fusion welding quality). Methods of test for aggregates for concrete (All parts). Code of practice for bending and fixing of bars for concrete reinforcement. General requirement for concrete vibrators ­ immersion type. Specification for portable swing weigh batchers for concrete (single and double bucket type). Code of practice for welding of M. S. plain and deformed bars for reinforced concrete construction. Code of practice for design and construction of pile foundation (Part I and IV). Pan Vibrators. Code of practice for the use of immersion vibrators for consolidating concrete. Form vibrators for concrete. Recommendation for determining reinforcement in reinforced concrete works. Method of test for determining aggregate impact value of soft, coarse works.

I. S. I. S. I. S. I. S. I. S.

1786 1791 2062 2386 2502

I. S. I. S.

2505 2722

I. S.

2751

I. S.

2911

I. S. I. S. I. S. I. S.

3366 3558 4656 5525

I. S.

5640

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I. S. I. S. I. S. I. S. I. S. I. S. I. S.

5816 6006 6461 8041 8043 8112 9103

Method of test for splitting tensile strength of concrete cylinder. Uncoated stress relieved strand for prestressed concrete. Glossary of terms relating to cement concrete. Specifications for rapid hardening portland cement. Specifications for hydraulic portland cement. Specifications for high strength ordinary portland cement. Admixtures for concrete.

Other codes and Specifications : Other is Codes pertaining to the items of cement concrete work in structural work and not listed above shall also be deemed to come under the purview of this clause. All Indian Road Congress Standards. Specifications and codes of practice also come under this purview. Grade of concrete : 1. Controlled concrete : For controlled concrete, design of the mix shall be arrived at after preliminary tests and in its production all necessary precautions shall be taken to ensure that the required works cube strength is attained and maintained. The controlled concrete shall be in nine grades designated as M 10, M 15, M 20, M 25, M 30, M 35, M 40, M 45 and M 50 and as per the terminology used for such designation in IRC codes of practices. 2. Ordinary concrete : In case of ordinary grade concrete, mix is not required to be designed by preliminary tests, proportion of cement, fine aggregates, coarse aggregates are specified by volume. The ordinary concrete shall be in four grades designated as M 10, M 15, M 20 and M 25, with the suffix ordinary added to it. It can also be specified by volume as given in Table 3. In the designation of a concrete mix. Letter `M' refers to the mix and the `number' to the specified works (compressive) strength of 150 mm cube of the mix expressed in kg / cm2, at 28 days.

110

Strength Requirement of concrete : Where ordinary port land cement conforming to IS : 269 or port land blast furnace cement conforming to IS : 455 is used, the compressive strength requirements for various grades of concrete, controlled as well a ordinary shall be as given in Table 1. Where rapid hardening Portland cement is used, the 28 days compressive strength requirement specified in Table 1 shall be met at 7 days. For controlled concrete, the mix shall be so designed as to attain in preliminary tests, a strength at least 33 percent higher than that required on work tests, for concrete mix up to and including M 250 and 25 percent higher for higher strengths. Preliminary tests need not be made in case of `ordinary concrete'. Grade of Concrete M 10 M 15 M 20 M 25 M 30 M 35 M 40 M 45 M 50 Compressive works strength in Mpa on 150 mm cubes as per testing conducted in accordance with IS:516. Min. at 7 days. Min at 28 days. 7 10 10 15 13.5 20 17 25 20 30 23.5 35 27 40 30 45 33.5 50

Note : In all cases, the 28 days compressive strength specified in Table 1 shall alone be the criterion for acceptance or rejection of the concrete. When the strength of a concrete mix, as indicated by tests, lies in between the strength for any two grades specified in Table 1, such concrete shall be classified for all purposes as concrete belonging to the lower of the two grades between which its strength lies. Materials : A: Cement : Fresh quality cement shall be procured only from approved manufacturer, supplier and shall be subject to prior approval of the Engineer in charge. Following type of cement shall be used. 3. All cement used for the work shall be ordinary port land cement or such other cement as may be permitted by the Engineer in charge as per code of practice. Portland cement shall comply with the requirements of the latest issue of the IS 269. High alumina cement, rapid hardening cement etc. Port land cement may be used only when

111

permitted by the engineer in charge, such cement shall be in accordance with relevant I. S. Port land Pozzolana cement when permitted by engineer in charge shall conform to IS 1489 but it shall not be used for RCC structural member. 4. Cement which has remained in bulk storage at the mill for more than 6 months, or which has remained in bags in dealer's storage for over three months which has been stored at project site for more than 3 months shall be re-tested before use. Cement shall also be rejected if it fails to conform to any of the requirement of these specifications. Such cements shall not be allowed to be used in the structure. B : Fine Aggregates : Fine aggregates shall consist of natural, manufactured sand, or an approved combination thereof and shall conform to IS : 383. The grading zone of sand proposed for use shall be supplied by the contractor and got approved from the Engineer in charge before use The sand shall be of siliceous material, sharp, hard, strong and durable and shall be free from adherent coating, clay, dust, alkali, organic material, deleterious matter, lumps etc. Either natural or manufactured sand shall be prepared for use by such screening or washing, or both, as necessary, to remove all objectionable foreign matter while separating the sand grains to the required size fractions. Natural sand shall be washed, unless specific written authority is given by the engineer in charge to use and that meets specifications and standards of cleanliness. The cost of screening and washing must be borne by the contractor. The fine aggregates shall be taken from a source approved by the Engineer in charge and this shall not be allowed to be changed without the permission of the Engineer in charge. C: Coarse Aggregates : Coarse Aggregates shall consist of hard, strong, durable particles of crushed stone and shall be free from thin elongated soft pieces, organic or other deleterious matter. It shall have no adherent coating. It will be from a source approved by the engineer in charge and shall confirm to I.S. : 383. Coarse aggregate shall be washed if necessary to remove all vegetable and other perishable substances and objectionable amount of other foreign matter. The cost of washing and screening being borne by the contractor.

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Size of Coarse Aggregates : Following shall be the maximum nominal size of coarse aggregates for different items of work : Sr. No. Item of construction Maximum nominal size of coarse aggregates :

i) ii)

iii)

iv) v)

R.C.C. well and staining concrete R.C.C. piles and in plum concrete. 63 mm. Well cap or pile cap; solid type piers, abutments and wing walls, and pier and abutment caps and general items of work in bridge construction. 40 mm. R.C.C. works in girders, deck, slab, wearing course, kerb, light posts, ballast walls, approach slab, etc. and hollow type piers, abutments, wing 20 mm. walls. R.C.C. bearings, shells, and other thin walled members and in zones of congestion. 20 mm. For any other item of construction not covered As specified in the by items (I) to (iv) drawing or as desired by the Engineer-in-charge if it is not specified on drawings. For heavily reinforced concrete members as in the case of main beams, nominal maximum size of aggregates shall usually be restricted to 5 mm less then the minimum lateral clear distance between the main bars, or 5 mm less than the minimum cover to the reinforcement, whichever is the smaller. However, if required, under special circumstances, the engineer in charge may permit an aggregate nominal maximum size 25% more than critical spacing/cover, provided that proper vibrating is ensured. For plain and reinforced cement concrete (PCC and RCC) coarse aggregates shall consist of clean, hard, strong, dense, non-porous and durable pieces of crushed stone, crushed gravel, natural gravel or a suitable combination thereof or other approved inert material. They shall not consist pieces of disintegrated stones, soft, flaky, elongated particles, salt, alkali, vegetable matter or other deleterious materials in such quantities as to reduce the strength and durability of the concrete, or to attack the steel reinforcement. Coarse aggregate having positive alkalisilica reaction shall not be used. All coarse aggregates shall conform to IS : 383 and tests for conformity shall be carried out as per IS : 2386, Parts I to VIII.

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The contractor shall submit for the approval of the engineer, the entire information indicated in Appendix A of IS : 383. Maximum nominal size of coarse aggregate for various structural components in PCC, RCC or PSC, shall conform to Section 1700. The maximum value for flakiness index for coarse aggregate shall not exceed 35 per cent. The coarse aggregate shall satisfy the following requirements of grading : Requirements of coarse Aggregate IS Sieve Size 63 mm 40 mm 20 mm 12.5 mm 10 mm 4.75 mm D: Percent by Weight Passing the Sieve 100 95-100 30-70 10-35 0-5 100 95-100 25-55 0-10 100 90-100 40-85 0-10

Reinforcing Steel : Reinforcing steel shall be clean and free from loose mill scales, rust, loose ruse and coats of paints, oil, grease or other coating which may impair or reduce bond.

(a)

Mild steel and medium tensile bars and hard drawn steel wire shall conform to I.S. : 432 latest addition. TMT - Fe ­ 415 bars shall conform to I.S. : 1786. Hard drawn steel wire fabric shall conform to I.S. : 1566. Structural steel sections and plates shall conform to I.S. : 2062. Hot rolled mild steel medium tensile steel and high yield strength steel deformed bars shall conform to I.S. : 1139. Water : Water used for mixing and curing shall be clean and free from injurious amounts of oils, acids, alkalis, salts, sugar, organic materials or other substances that may be deleterious to concrete or steel. Potable water is generally considered satisfactory for mixing concrete. Mixing and curing with sea water shall not be permitted. As a guide, the following concentrations represent the maximum permissible values :

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(b) (c) (d) (e)

E:

(1) (2) (3)

To neutralise 200 ml sample of water, using phenolphthalein as an indicator, it should not require more than 2 ml of 0.1 normal NaOH. To neutralise 200 ml sample of water, using methyl orange as an indicator, it should not require more than 10 ml of 0.1 normal HCI. The permissible limits for solids shall be as follows when tested in accordance with IS : 3025 : Permissible Limits (max) Organic 200 mg/lit Inorganic 3000 mg/lit Sulphates (SO) 500 mg/lit Chlorides (CI) 500 mg/lit * Suspended matter 2000 mg/lit In case of structures of lengths 30 m and below, the permissible limit of chlorides may be increased upto 1000 mg/lit. All samples of water (including potable water) shall be tested and suitable measures taken where necessary to ensure conformity of the water to the requirements stated herein.

*

(d) F:

The pH value shall not be less than 6. Admixtures : No materials other than the essential ingredients, i.e. cement, aggregates and water, shall ordinarily be used in the manufacture of concrete or mortar. But the Engineer-in-charge may permit the use of approved admixtures for imparting special characteristics to the concrete, if so specified, on satisfactory evidence that its use does not in any way adversely affect the properties of concrete particularly its strength, volume changes, durability and has no deleterious effect on the reinforcement. Admixtures where allowed will generally be conforming to relevant ASTM standards and I. S. : 9103.

G:

Materials for Repair work The use of epoxy for bonding fresh concrete members or used for repairs will be permitted on written approval of the Engineer in charge. Epoxy shall be used in accordance with the specifications and instructions of the manufacturer. The cost of such use of epoxy when approved by the Engineer-in-charge shall be borne by the contractor.

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H:

Storage of Materials : 1. Cement : The contractor shall make arrangements to the satisfaction of the Engineer-in-charge for the storage of cement to prevent deterioration due to moisture and/or intrusion of foreign matter. Bulk cement if procured by the contractor shall be stored in approved water ­ proof bins or silos. Bagged cement shall be stored in a suitable weather tight warehouse in such a manner as to provide easy access for identification and inspection of each consignment. Stored cement shall meet the test requirements as per IS- 269 at any time after storage when a retest is ordered by the Engineer-in-charge. Each consignment shall be stacked separately with the date of receipt flagged on it, not more than 12 bags being stacked in height, the bags being arranged with headers and stretchers. Normally consignments shall be used in the order of receipt at site unless otherwise directed. In case of large concrete pours, the Engineer-in-charge will decide on the batch of cement to be used taking into consideration the quantity of cement with particular reference to the concerned concrete pours. Any additional work in handling and storage of cement contingent upon this requirement shall be to the contractor's account and no extra claim for damages due to exposure to moisture in transit, in storage at the works and until it enters the concrete mixers shall be admissible. The contractor shall keep accurate record of the procurement of the cement by him and of its use in the work as prescribed under this contract. 2. Aggregates : Coarse and fine aggregates shall be stacked separately in such manner as to prevent contamination by foreign materials. All aggregates shall be stored on concrete or masonry platforms. Each size shall be kept separate with wooden, steel, concrete, or masonry bulk-heads, or shall be stored in separate stacks, taking care to prevent the materials at the edges of the stock piles from getting intermixed. Stacks of fine and coarse aggregates shall be kept sufficiently apart. The aggregates shall be stored in easily measurable stacks of suitable heights as may be directed by the Engineer-in-charge. 3. Reinforcing Steel : Reinforcing steel, shall not be stored directly on the ground. These shall be stored under cover, and shall be protected from rusting, oil, grease and distortions as may be directed by the Engineer-in-charge.

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Proportioning concrete : (A) Controlled concrete : Concrete mix shall be designed on the basis of preliminary tests. The proportions for ingredients chosen shall be such that concrete has adequate workability for condition prevailing on the work in question, and can be properly compacted with the means available. Except where it can be shown to the satisfaction of the Engineer-incharge that supply of properly graded aggregate of uniform quality can be maintained till the completion of work, grading of aggregate should be controlled by obtaining the coarse aggregate in different sizes and blending them in the right proportions as required. Different sizes, however, shall be stacked in separate stock piles. Required quantity of material shall be stock piled several hours, preferably a day, before use. Grading of coarse and fine aggregate shall be checked as frequently as possible, frequency for a given job being determined by the Engineer-in-charge to ensure that the suppliers are maintaining the uniform grading as approved for samples used in the preliminary tests. In proportioning the quantity of both cement and aggregate shall determined by weight. Water shall either be measured by volume in calibrated tanks or weighted. All measuring equipment's shall be maintained in a clean, and serviceable condition. Their accuracy shall be periodically checked. It is most important to keep the specified water ­ cement ratio constant and at its correct value. To this end, moisture content in both fine and coarse aggregates shall be determined by the Engineer-in-charge accordingly to the weather conditions. The amount of mixing water shall then be adjusted to compensate for variations in the moisture content. For the determination of moisture content in the aggregates IS: 2386 (Part III) shall be refereed to. Suitable adjustments shall also be made in the weights of aggregates to allow for the variation in their moisture content. The minimum cement content and water cement ratio shall be as specified below : Minimum cement content and maximum water cement ratio and minimum grade of concrete. (A) For bridges those with individual spans greater than 30 Mts. or those that are built with innovative design / construction.

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Structural member

(a)P.C.C. Member (b)R.C.C. Member

Minimum cement Maximum water Minimum grade of content in Kg/Cu.m. cement ratio concrete Exposure condition Exposure condition Exposure condition Normal Severe Normal Severe Normal Severe 360 360 0.45 0.40 M-25 M-30 380 380 0.45 0.40 M-30 M-35

(B) For bridges other than those mentioned in Table A for culverts and other incidental construction. Structural member Minimum cement Maximum water Minimum grade of content in Kg/Cu.m. cement ratio concrete Exposure condition Exposure condition Exposure condition Normal Severe Normal Severe Normal Severe 250 310 0.5 0.45 M-15 M-20 310 360 0.45 0.40 M-20 M-25

(a)P.C.C. Member (b)R.C.C. Member Notes : 11

Condition of exposure : (i) Severe ­ Marine environment : alternate wetting and drying due to sea spray; alternate wetting and drying combined with freezing; buried in soil (having corrosive effect); members in contact with water where the velocity of flow and the bed material are likely to cause corrosion of concrete. (ii) Moderate ­ Condition other than `severe' The minimum cement content is based on 20mm size aggregates. For larger size aggregates, it may be reduced suitably by not more than 10 percent. Similarly for smaller size aggregates, it may be suitably increased, but not more than 10 percent. The cement content shall not exceed 540 kg/m3 of concrete. (i) Ordinary Concrete : The ordinary concrete mix shall generally be specified by volume. For cement which normally comes in bags and is used by weight, Volume shall be worked out taking 50 Kg. Of cement as 0.035 cubic meters in volume. While measuring aggregate by volume, shaking, ramming or hammering shall not be done. Proportioning of sand shall be as per its 1 dry

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12

13

volume and in case it is damp, allowance for `bulking/ shall be made as per IS : 2386 (Part III). Ingredients required for ordinary concrete containing one 50 Kg. Bag of cement for different proportions of mix shall be as given in Table­2. TABLE ­ 2 Mix by Total quantity of dry Proportion of fine Grade Volume aggregates by volume aggregates to coarse of per 50 Kg. Of cement, aggregate. concrete to be taken as the sum of the individual volumes of fine & coarse aggregates, max. (Liters) 1 2 3 4 M 10 1:3:6 300 Generally 1:2 for M 15 1:2:4 220 Fine aggregate to coarse M 20 1:1 ½:3 160 aggregate M 25 1:1:2 100 Aggregate by volume but subject to a upper limit of 1:1 ½ and a lower limit of 1:2 ½. Qty. of water per 50 Kg. Of cement max. (Litres)

5 34 32 30 27

Note No. 1 :- The proportions of the aggregates shall be adjusted from upper limit to lower limit progressively as the grading of the fine aggregates becomes finer and the maximum size of coarse aggregate becomes larger. Note No. 2 :- The amount of water should be kept minimum required for proper workability. The quantity given in Col. 5 is not to be exceeded. Example For an average grading of fine aggregate (that is zone II or IS 303-1963) the proportions shall be 1:1 ½; 1:2 and 1:3, for maximum size of aggregates 10 mm, 20 mm and 40 mm respectively. Note No. 3 :- A mix leaner than M 100 (1:3:6) may be used for non-structural parts if specified on the drawing or provided in the Contract. In such case grading of aggregates shall be as specified in the Contract or on the drawings. Other requirements for mixing, placing and curing shall be the same as specified in this section.

(ii)

Quantity of Water :

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The quantity of water shall be just sufficient to produce a dense concrete of required workability and strength for the job. An accurate and strict control shall be kept on the quantity of mixing water. In the case of reinforced concrete work, workability shall be such that the concrete surrounds and properly grips all reinforcements. The degree of consistency, which shall depend upon the nature of work and methods of vibration of concrete, shall be determined by regular slump tests. Following slump shall be adopted for different types of works. Sr. No. (i) Type of work Where vibrators are used 10 mm to 25 mm Slumps Where vibrators are not used 80 mm

(ii) (iii)

Mass concrete in RCC foundations, footings and retaining walls. Beams, slabs and columns reinforced Thin RCC Section or section with congested steel

25 mm to 40 mm 40 mm to 50 mm

100 mm to 20mm 125 mm to 150mm

Note :- With use of ordinary concrete, the slump requirement specified above would not be applicable. Mixing of Concrete : For all work, concrete shall be mixed in a mechanical mixer which along with other accessories shall be kept in first class working condition and so maintained throughout the construction. Mixing shall be continued till materials are uniformly distributed and uniform colour of the entire mass is obtained and each individual particle of the coarse aggregate show complete coating of mortar containing its proportionate amount of cement. In no case shall the mixing be done for less than 2 minutes after all ingredients have been put into the mixer. In hand mixing quantity of cement shall be increased by 10 percent above that specified but the cost of increased cement quantity shall be borne by the contractor. Hand mixing will be permitted only under exceptional conditions and the contractor must take the permission of the Engineer-incharge in advance. Mixers which have been out of use for more than 30 minutes shall be thoroughly cleaned before putting in a new batch. Unless otherwise agreed to by the Engineer-in-charge, the first batch of concrete from the mixer shall contain only two thirds of the normal quantity of coarse

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aggregate. Mixing plant shall be thoroughly cleaned before changing from one type of cement to another. Transport, Placing and Compaction of Concrete : The method of transporting and placing concrete shall be got approved from the Engineer-in-charge. Concrete shall be so transported and placed that no contamination, segregation or loss of its constituent materials takes place. All form work and reinforcement contained on form work shall be cleaned and made free from standing water or dust immediately before placing of concrete. No concrete shall be placed in any part of the structure until the approval of the Engineer-in-charge has been obtained in writing. If concreting is not started within 24 hours of the approval being given, it shall have to be obtained again from the Engineer-in-charge. Concreting then shall proceed continuously over the area between construction joints. Fresh concrete shall not be placed against concrete, which has been in position for more than 30 minutes unless it is ensured that the re-vibration limit of the earlier concrete is not crossed or a proper construction joint is formed. Concrete when deposited shall have a temperature of not less than 4.5 degree centigrade and not more than 38 degree centigrade unless otherwise specified. It shall be compacted in its final position within 30 minutes of its discharge from the mixer unless carried in properly designed agitators, operating continuously, when this time shall be within 2 hours of the addition of cement to the mix and within 30 minutes of its discharge from the agitator. Except where otherwise agreed to by the Engineer ­ in - charge concrete shall be deposited in horizontal layers to a compacted depth of not more than 0.45 metre when internal vibrators are used and not exceeding 0.30 metre in all other cases. Unless otherwise agreed to by the Engineer-in-charge, concrete shall not be dropped into place from a height exceeding 2 meters. When trunks or chutes are used they shall be kept clean and used in such a way as to avoid segregation.

When concrete is conveyed by chute, the plant shall be of such size and design as to ensure practically continuous flow. Slope of the chute shall be so adjusted that the concrete flows without the use of an excessive quantity of water and without any segregation of its ingredients. The delivery end of the chute shall be as close as possible to the point of deposit. The chute shall be thoroughly flushed with water before and after each working period and the water used for this purpose shall be discharged outside the form work.

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When concreting has to be resumed on a surface which has hardened, it shall be roughened, swept clean, thoroughly wetted and covered with a 13 mm thick layer of mortar composed of cement and sand in the same ratio as in the concrete mix itself. This 13 mm layer of mortar shall be freshly mixed and placed immediately before placing of new concrete. Where concrete has not fully hardened, all laitance shall be removed by scrubbing the wet surface with wire or bristle brushes, care being taken to avoid dislodgment of any particles of coarse aggregate and also not to break the bond between concrete and the embedded portion of the dowel bars. The surface shall then be thoroughly wetted, all free water removed, and then coated with neat cement grout. The first layer of concrete to be placed on this surface shall not exceed 150 mm in thickness., and shall be well rammed against old work, particular attention being given to corners and close spots. All concrete shall be compacted to dense homogeneous mass with the assistance of vibrators unless permitted by the Engineer-in-charge. In exceptional cases, such as concreting under water, vibrators can not be used. Sufficient vibrators in exceptional working condition shall be kept at site so that stand by equipment's are available in the event of breakdowns. The performance requirements of vibrators shall conform to relevant I. S. codes. Vibration applied through reinforcement, and where vibrators of immersion type are used, contact with reinforcement inserts shall be avoided, as far as practicable. Concreting under water : When it is necessary to deposit concrete under water, the methods, equipments, and materials of the mix to be used shall be got approved from the Engineer-in-charge before any work is started. Such concreting be considered as controlled concrete i.e. design mix. Concrete shall not be placed under temperature below 50 degree centigrade. The temperature of concrete, when deposited, shall be however not less than 50 centigrade nor more than 40 degree centigrade. Concrete to be placed under water shall contain ten percent more cement than that required for the same mix placed in the dry. The slump shall not be less than 100 mm nor more than 180 mm. The slump shall be tested as per I. S. 516. Coffer-dams or forms shall be water tight to ensure still water conditions if practicable and in any case to reduce the flow of water to less than 3 meters per minute through the space into which concrete is to be deposited. The forms in still water shall be sufficiently tight to prevent loss of mortar through the

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joints in the walls. Pumping shall not be done while concrete is being placed, or until 24 hours thereafter. Concrete shall continue to be deposited until it has been brought to the required height. The top surface shall always be kept as wet as far as possible and formation of seems avoided. For concrete any one of the following methods may be used. · Tremie : When concrete is to be deposited under water by means of tremie, the top section of the tremie shall be a hopper large enough to hold one full batch mix or the entire contents of the transporting bucket. The tremie pipe shall not be less than 200 mm dia. and also shall be large enough to allow a free flow of concrete and strong enough to with stand the external pressure of water in which it is suspended, even if a partial vacuum develops inside the pipe. Preferably, flanged steel pipe of adequate strength for the job shall be used. A separate lifting device shall be provided for each tremie pipe with its hopper at the upper end. Unless the lower end of the pipe is equipped with an approved automatic check valve, the upper end of the pipe shall be plugged with a wedging by use of gunny sacks or other approved material before delivering the concrete to the tremie pipe through the hopper, so that when the concrete is forced down from the hopper to the pipe, it will force the plug (and along with it any water in the pipe) down the pipe and out of the bottom end. Thus establishing a continuous stream of concrete. It will be necessary, to raise slowly the tremie in the order to allow a uniform flow of concrete, but it shall not be emptied so that water enters above the concrete in the pipe. At all times after the placing of concrete is started and until all the requirement quantity has been placed, the lower end of the tremie pipe shall be kept below the top surface of the plastic instead of flowing out over the surface, and thus avoid formation of layers of laitence. If the charge in the tremie is lost while depositing, the tremie shall be raised above the concrete surface, and unless sealed by a check valve it shall be re-plugged at the top end, as at the beginning before refilling for depositing further concrete. · Drop Bottom Bucket : The top of the bucket shall be closed. The bottom doors shall move freely downward and outward when tripped. The bucket shall be filled completely and lowered slowly to avoid backwash. It shall not be dumped until it rests on the surface upon which the concrete is to be deposited and when discharged shall be withdrawn slowly until well above the concrete. To minimize the formation of laitance, great care shall be exercised to disturb the concrete as far as possible while it is being deposited.

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Curing of concrete : (E) Protection and Water Curing :Immediately after compaction, concrete shall be protected against harmful effects of weather, including rain, running water, shocks, vibration, traffic, rapid temperature changes, and drying out process. It shall be covered with wet gunny bags, hessin or other similar absorbent material approved by the Engineer-in-charge soon after the initial set, and shall be kept continuously wet for a period not less than 21 days from the date of placement. Masonry work if any over the foundation concrete may be started after 48 hours of its laying but the curing of concrete shall be started soon after concrete is laid and continued for a minimum period 21 days. (F) Steam Curing Where steam curing is adopted it shall be ensured that it is done in a suitable enclosure to contain the live steam to minise moisture and heat losses. The initial application of the steam shall be from two to four hours after the placement of concrete to allow the initial set of the concrete to take place. Where retards are used, the waiting period before application of the steam shall be increased from four to six hours. The steam shall be at 100 percent relative humidity to prevent loss of moisture and to provide excess moisture for proper hydration of cement. The application of steam shall not be directly on concrete and the ambient air temperature shall increase at a rate not exceeding 5 degree centigrade per hour until is maximum temperature of 600 C to 700 C is reached. The maximum temperature shall be maintained until the concrete has reached the desired strength. When steam curing is discontinued, the ambient air temperature shall not drop at a rate exceeding 50 centigrade per hour until a temperature of about 100 centigrade above the temperature of the air to which the concrete will be exposed, has been reached. Working in Extreme Weather : When depositing concrete in very hot weather, precautions shall be taken so that the temperature of wet concrete does not exceed 400 C while placing. This shall be achieved by stacking aggregate under the sheds and keeping them moist, using cold water or crushed or flaked ice if specified and permitted by the Engineer, reducing the time between mixing and placing to the minimum, cooling formwork by sprinkling water, starting curing before concrete dries out and restricting concreting, as far as possible, to mornings and evenings.

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During hot-weather and rains the concrete shall be covered with tarpaulin and transported in as short a time as possible and placed in the forms and consolidated to final state. Commencement of concrete pours shall be avoided during heavy rains, storms and high winds. Finishing Immediately after the removal of forms, all exposed bars or, bolts passing through the reinforced cement concrete member and used for shuttering or any other purpose shall be cut inside the reinforced cement concrete member to a depth of at least 25 mm below the surface of the concrete. The resulting holes shall be closed by cement mortar. All fins caused by form joints shall be broken. All cavities produced by the removal of forms and ties, all other holes and depressions, honey-comb spots, broken edges of corner and other defects, shall be thoroughly cleaned, saturated with water, and carefully pointed and rendered true with mortar of cement and fine aggregate mixed in the proportions used in the grade of concrete that is being finished and of as dry a consistency as is possible to use. Considerable pressure shall be applied in filling and pointing to ensure through filling in all voids. Surfaces which have been pointed shall be kept moist for a period of twenty four hours. Any repair and rectification of defective work is to be undertaken and carried out as directed by the Engineer in charge and the cost is to be borne by the Contractor. If in the opinion of the Engineer-in-charge, rock pockets / honey-comb, if met with, are of such an extent or character as to affect materially to the strength of the structure or endanger the life of the steel reinforcement, he may declare the concrete defective and direct removal and replacement of the portions of the structure affected. All construction and expansion joints in the completed work shall be left carefully looked and free from any mortar and concrete. Expansion joint filler shall be left exposed for its full length with clean and true edges. Curing of the surface shall be continued for a period of 21 days. Classes of Finishing The surface finish for formed and unformed surfaces are classified and defined as below. Surface irregularities permitted for the various classes of finishes are termed either "abrupt" pr "gradual". Fins or offsets caused by displaced or misplaced from sheathing, lining or

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form sections, by loose knots in form lumber or by otherwise defective form lumber are considered abrupt irregularities. All other cases are described as gradual irregularities. Gradual irregularities will be measured with a template consisting of a straight edge for plane surfaces or its equivalent for curved surfaces. The length of template for testing gradual irregularities on formed surfaces shall be 1.5 m. in length, the permissible gradual irregularities being measured over this length of the template. Special surfaces, finishes and treatment falling outside of these classes but defined elsewhere by the engineer shall also form part of these specifications. Finish F1, F2 and F3 shall describe formed surfaces. Finish U1, U2 and U3 shall describe unformed surfaces. Class F1 Finish : This class of finish shall apply to all formed surfaces for which class F2 or F3 is not specified. It shall generally be formed by sawn timber formwork so constructed that there shall be no loss of material from the concrete during placement and compaction. After hardening, the concrete shall be in the positions required and shall have the shape and dimensions called for in the drawings. Any abrupt irregularities shall not exceed 8 mm and gradual irregularities shall not exceed 16 mm. All fins and drifts in excess of the above limits shall be made good by chipping and grinding if required by the Engineer in Charge. Small blemishes caused by entrapped air or water may be expected but the surface shall be free form voids, honeycombing or other large blemishes. Class F1 finish shall be generally specified for all surfaces buried in ground or not visible during service or for surfaces that are to receive further rendering treatment such as plastering etc. Unless otherwise specified in the item of Bill of Quantity the surface finish shall be understood to be Class F1. Class F2 Finish : Class F2 finish shall be obtained by the use of properly designed forms with closely jointed wrought timber forms or with forms having plywood or steel sheet lining. The abrupt irregularities shall not exceed 5 mm. and gradual irregularities shall be less than 8 mm. Small blemishes caused by entrapped air or water may be permitted but the surface shall be generally free from honeycombing, voids and large blemishes. Surface irregularities in excess of those stipulated shall be removed by chipping or rubbing with abrasive stone

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Class F3 Finish : Class F3 finish shall be formed by specially designed close jointed rigid forms having lining of high quality form plywood in which the surface irregularities shall be limited to nil for abrupt irregularities and upto 3 mm for gradual irregularities. Class F3 finish may be obtained from Class F2 finish by carefully removing all fins, projections, abrupt irregularities by rubbing. Grinding. If steel forms are used they shall be subject to Engineer in charge's approval. In addition, finish F3 shall include filling air holes with mortar and treatment of the entire surface with sack rubbed finish. It shall also include clean up of loose and adhering debries. Where a sack rubbed finish is specified, the surfaces shall be prepared within two days after removal of the forms. The surfaces shall be wetted and allowed to dry slightly before mortar is applied by sack rubbing. The mortar used shall consist of one part cement to one and one half parts by volume of fine (I.S. No. 16 mesh) sand. Only sufficient mixing water to give the mortar a workable consistency shall be used. The mortar shall then be rubbed over the surface with a fine burlap or linen cloth so as to fill all the surface voids. The mortar in the voids shall be allowed to stiffen and solidify after which the whole surface shall be wiped clean with clean burlap such that all air holes etc. are filled and the entire surface presents a uniform appearance without air holes, irregularities etc. Class U1 Finish : This is the screeded finish used on the surface over which other finish such as wearing coat etc. are to be placed. IT is also the first step in the formation of U2 to U3 finishes. The finishing operation consists of levelling and screeding the concrete to produce an even uniform surface so that the gradual irregularities are not greater than 6 mm. Surplus concrete should be removed immediately after consolidation by striking it off with a sawing motion or straight edge or template across a wooden or metal strip that has been set as guide. Unless the drawing specifies a horizontal surface or shows the slope required, the tops of narrow surfaces, such as stair treads, walls, curbs and parapets shall be sloped approximately 10 mm per 300 mm width. Surfaces to be covered with concrete topping, terrazzo and similar surfaces shall be smooth screeded and leveled to produce even surface, irregularities not exceeding 6 mm. Class U3 Finish : This is a trovelled finish used on all surfaces exposed to view at close quarters such as top of parapets and kerbs etc. steel trovelling should not be started until after the moisture film and "Shine" have completely disappeared from the floated surface and until the concrete has hardened enough to prevent an excess of fine material and water from being worked to the surface. Excessive trovelling especially if started too soon tends to produce crazing and lack of durability. Too long a delay will result in a surface too hard for proper finishing steel trovelling should be performed with a firm

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pressure that will flatten and smooth a sandy surface left by floating. Trovelling should produce a dense, uniform surface free of blemishes, ripples and trovel marks. It shall include the repair of abrupt irregularities and the repair of gradual irregularities exceeding 6 mm, finishing joints and edges of concrete with edging tools. Form liner Finish : This is the liner finish surfaces on the structural components shown on drawings and directed by Engineer in charge. The bissazza tiles of any other tiles equivalent to bissazza of approved quality shall be pasted in the pattern & locations suggested by the architect with approved bedding materials as directed by Engineer in charge & Architects. Construction Joints Concreting shall be carried out continuously upto the construction joints, the position and details of which shall be as shown on approved drawings or as directed by the Engineer-in-charge. Such joints shall, however, be kept to the minimum. For a vertical construction joint, a stopping board shall be fixed previously at the pre-determined position and shall be properly stayed for sufficient lateral rigidity to prevent its displacement or bulging when concrete is completed against it. Concreting shall be continued right up to the board. The board shall not be removed before the expiry of the specified period for removal of vertical forms. Before resuming work at any construction joint when concrete has not yet fully hardened, all latencies shall be removed thoroughly, care being taken to avoid dislodgment of coarse aggregates. When work has to be resumed on a surface that has hardened, it shall be thoroughly hacked, swept clean, wetted and covered with a layer of neat cement grout. The neat cement grout shall be followed by a 13 mm thick layer of mortar mixed in the same proportion as in concrete and concreting resumed immediately thereafter. The first batch of concrete shall be rammed against the old work to avoid formation of any stone pocket., particular attention being paid to corners and close spots. In all cases, the position and detailed arrangement of all construction joints shall be predetermined and got approved by the Engineer-incharge. Tests and Standard of Acceptance : (i) Preliminary Tests for Controlled concrete For controlled concrete preliminary tests shall consist of three sets of separate tests, and in each set, tests shall be conducted

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on six specimens. Not more than one set of six specimens shall be made on any particular day of the six specimens in each set, three shall be tested at seven days and the remaining three at 28 days. The preliminary tests of 7 days are intended only to indicate the strength likely to be attained at 28 days. (ii) Works Strength Tests for Controlled and ordinary concrete: Works strength tests shall be made in accordance with I.S. 516. Each set shall be conducted on ten specimens. Five of which shall be tested at seven days and the remaining five at 28 days. The sample of concrete shall be taken on each day of concreting and cubes shall be made at the rate of one set for every 50 cubic meter of concrete or a part thereof for each grade. However, if in each grade concreting done in a day is less than 15 cubic meter, the number of cubes can be reduced to 5 with the specific permission of the Engineer-in-charge. Similar works tests shall be carried out whenever the quality and grading of materials is changed irrespective of the quantity of concrete poured. The number of specimens may be suitably increased as deemed necessary by the Engineer-in-charge, when procedure of tests given above reveals a poor quality of concrete and in other special cases. All work shall be carried out under the supervision of qualified and a competent Engineer of the contractor at all stages in proportioning, placing and compacting of concrete. All necessary labour, materials, equipments etc., for sampling, preparing test cubes, curing, transportation and carrying out tests etc. shall be borne by the contractor. Testing of the materials and concrete may be arranged by the Engineer-incharge in an approved laboratory at the cost of the contractor. (iii) Standard of Acceptance The average strength of the group of cubes cast for each day shall not be less than the specified works cube strength. 20 percent of the cubes cast for each day may have values less than specified strength, provided the lowest value is not less than85 percent of specified strength. (iv) Manufacturer's Certification; Testing Rules etc. For all materials required for concrete including cement, aggregate, water, reinforcing and prestressing steel the original copies of test certificates, test results etc. either carried out by

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the manufacturer or any other agency, the mix design recommendations etc. shall be submitted to the Engineer in charge for his approval and record. It shall remain the property of the Engineer in charge. (v) Chloride Contents. Since the chloride contents of the constituent materials of the concrete would be detrimental to the strength of concrete., it is desirable to keep check on the overall chloride content of the concrete to keep it minimum. Especially for reinforced concrete, the total chloride content of the concrete when manufactured according to the requirements of workability and strength shall not exceed 500 ppm. By weight of cement. The cost of testing for the chloride content of the ingredients of concrete and of undertaking remedial measures if the chloride content is more than the permissible limit shall be borne by the contractor. Repair Work : Concrete with satisfactory test results but with otherwise minor defects shall only be considered unsatisfactory. It shall be allowed to be repaired by cutting out the if so allowed by the Engineer in charge. Voids to be so filled shall be provided with anchors, keys or dovetail, slots whenever necessary to attach the new material securely in place. Surface of prepared voids shall be wetted for 24 hours immediately before the patching material is placed. Repair to concrete structure shall be carried out by skilled workmen. Repairs shall be made as soon as practicable after removal of forms and in a manner to meet the requirements for the finish specified for the particular location.

For repair of the concrete works, the contractor may be permitted to use epoxy as a bonding agent prior to placing fresh concrete. The use of epoxy for the repair work will be at the discretion of the Engineerin-charge. Epoxies shall be applied in strict accordance with the instruction of the manufacturer. Epoxy is a two packed or three packed system containing base and hardners. The shelf life of the unmixed cans is about one year or more when stored in a place, where ambient temperature does not increase beyond 75 F. The base and hardener/s shall be mixed in the correct proportions recommended by the manufacturer. The blend, after mixing intimately, shall have a pot life of one hour and the material shall be applied over the old concrete in a thin film. Fresh concrete shall then be deposited immediately prior to the film drying up so as to ensure proper bonding between both new and old concrete.

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Where the dry pack method is used, holes shall be sharpened and squared at the surface edges, but corners within holes shall be rounded. The perimeter of the hole shall be under cut in several places. Holes for dry pack shall have a minimum depth of 25 mm. The holes to be repaired shall be scrupulously clean and slightly wet with no free water on the surface. The surface shall then be dusted lightly with cement by means of dry brush. Under no condition shall the holes be painted with neat cement grout. The dry pack mix shall be proportioned by weight 1 part cement to 2 ½ parts of sand that will pass a No. 16 screen. Only enough water shall be used to produce a mortar which will stick together when moulded into a ball by a slight pressure of the hands and will not extrude but will leave the hands just damp. Dry pack material shall be placed and packed in layers having a compacted thickness of about 10 mm. Each layer shall be solidly compacted over its entire surface by use of hardwood stick and hammer. The stick is normally about 300 mm. to 460 mm long and not over 30 mm in diameter. Most of the tamping should be directed at a slight angle and towards the side of the hole to assure maximum compaction and bond. Water shall not be used to facilitate finishing. Filling material used in repair of surfaces which will be exposed after completion of the project shall be made with cement from the same sources as that used in concrete and blended with a sufficient amount of white portland cement to produce the same colour as in the adjoining concrete. Patched surfaces shall be given a final treatment as required to make the texture of the patch match that of the surrounding material. Immediately after patching is completed, the patched area shall be covered with an approved non staining, water-saturated material which shall be kept wet and protected against sun and wind for a period of 12 hours. Thereafter, the patched area shall be kept continuously wet by a fine spray or sprinkling for not less than 10 days as required. The layers of gunite may be reinforced with steel mesh if directed by the Engineer ­ in- charge. All materials, procedures and operations used in the repair of concrete and also the finished work shall be subject to the approval of the Engineer-in-charge. All fillings shall be tightly bonded to the concrete and shall be sound, free from shrinkage cracks, or dummy areas after the fillings have been cured and dried. The extent of repair shall be decided upon by the Engineer-in-charge. The cost of repairs of defective areas shall be borne by the Contractor. The Engineer may adopt, at his discretion, any other method of repairing like grouting with cement grout, epoxy grout or guniting etc.

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which will be carried out by the contractor at his cost as per the specifications supplied by the Engineer. Use of Plums in Concrete : Use of plums in concrete shall not be permitted. Additional Points to be followed : (1) (2) (3) Major concrete above 5.0 m3 only will be allowed by RMC plant. Following RMC plant are approved. Ultratech, Lapharge, ACC, RMC(India) Frequency of Testing to be done from outside contractor's side. Out of which 60% shall be done though government organization. Contractors own RMC plant with computerized printing facility shall be allowed to be approved by VMSS.

(4)

Measurements for Payment : 1 The cement concrete shall be measured in cubic meter. In reinforced concrete the volume occupied by reinforcement shall not be deducted. Any concrete used in excess of theoretical dimension shown on the drawings will not be paid. Unacceptable work. All defective concrete work, including but not limited to defects arising out of honey combing, under sizing, under strength etc. will have to be demolished and rebuilt by the contractor at his own cost as may be directed by the Engineer in charge. In the event of such works being accepted by carrying out minor repairs etc. as suggested by the contractor and accepted by the Engineer in charge. He will be paid for the work actually carried out by him at the reduced rate as may be asked by the Engineer-in-charge for portion of the work that may be accepted with repairs done by the contractor. Rate : The unit rate for concrete shall include the cost of all materials, labours, tools and plant required for mixing, placing in position, vibrating, compacting, finishing as per directions of the Engineer in charge , and all other incidental expenses for producing and laying in position concrete of specified strength to complete the structure or its components as shown on the drawings and according to these specifications. The rate shall also include the cost of making, fixing

132

2 3

and removing of all centering and forms required for the work unless otherwise specified in the contract. All expenses likely to be incurred by the contractor in transporting materials procured at the site of works, the expenses incurred in improving the quality of materials to acceptable levels (such as screening, washing etc.) and the expenses incurred for proper storage of materials as directed by the engineer in charge etc. are to be included in the unit rate. Steel Reinforcement 2 General : All steel shall be as per clause 1009 of MOST specifications. Prestressing shall conform to either of the followings. 2 Plain hard drawn steel wire conforming to I. S. 1785 Part I & II. 3 Cold drawn indented steel conforming to I. S. 6003 4 High tensile steel bar conforming to I. S. 2090 5 Uncoated stress relived strand conforming to I. S. 6006 For RCC work untensioned steel shall conform to the followings : 3 Grade S. 240 conforming to I. S. 432 Part I mild steel bar 4 TMT Fe- 415 conforming to I. S. 1786 High yield strength deformed TMT Fe-415 bars 5 Others Grades of bars conforming to I. S. 432 or I. S. 1786 shall not be permitted. All steel shall be procured from original producers and no re rolled steel shall be permitted. 3 Specification for TMT bars reinforcement Scope of work : The scope of work consists of providing and laying mild steel reinforcement and TMT Fe-415 reinforcement for RCC works of various components of the structure. This may be Tiscon or any other approved manufacturer branch and confirming to IS ­ 1786 approved by the Engineer-in-charge. This includes cuttings, bending, binding, placing, with all equipments and labour required for the work as directed by the Engineer-in-charge and all operations covered within the intent and purpose of the specification.

133

Bending of Reinforcement : Reinforcing steel shall conform accurately to the dimensions shown on relevant drawings and conforming to the relevant IS codes (latest revision) Bars shall be bent cold to the specified shape and dimensions or as directed by the Engineer-in-charge using a proper bar bender, operated by hand or power to attain proper radii of bends. Bars shall not be bent or strainghened in a manner that will cause injury to the material. Bars bent during transport or handling shall be straightened before being used on work; they shall not be heated to facilitate bending. The bending of the TMT Fe ­ 415 bars shall be carried out as per the following : Sr. No. 1 2 Operation Bend Rebend Size Upto 22 mm dia. Over 22 mm dia. Upto 10 mm dia. Over 10 mm dia. TMT Fe-415 3d 4d 4d 5d

Placing of Reinforcement : All reinforcing bars shall be accurately placed in the exact position shown on the drawings, and shall be securely held in position during placing of concrete by annealed binding wire not less than 1 mm. in size and conforming to IS : 280 and by using stays blocks or metal chairs, spacer, metal hangers, supporting wires or other approved devices at sufficiently close intervals. Bars will not be allowed to sag between supports nor displaced during concreting or any other operation over the work. All devices used for positioning shall be of noncorrodible material. Wooden and metal supports will not extend to the surface of concrete, except where shown on the drawings, Placing bars on layers of freshly laid concrete as the work progresses for adjusting bar spacing will not be allowed. Pieces of broken stone, brick or wooden blocks shall not be used. Layers of bars shall be separated by spacer bars, precast mortar blocks or other approved devices.

134

Reinforcement after being placed in position shall be maintained in a clean condition untill completely embedded in concrete. Special care shall be exercised to prevent any displacement of reinforcement in concrete already placed. To protect reinforcement from corrosion, concrete cover shall be provided as indicated on the drawings. All bars protruding from concrete to which other bars are to be spliced and which are likely to be exposed for an indefinite period shall be protected by a thick coat of neat cement grout. In the case of columns and walls, vertical bars shall be kept in normal position with timber templates having slots accurately cut in for bar position. Such templates shall be removed after the concreting has progressed upto a level just below them. Bars crossing each other, where required, shall be secured by binding wire (annealed) of size not less than 1 mm and conforming to IS : 280 in such a manner that they do not slip over each other at the time of fixing and concreting. As far as possible, bars of full length shall be used. In case this is not possible, overlapping of bars shall be done as directed by the Engineer-in-charge. When practicable, overlapping bars shall not touch each other, but be kept apart by 25 mm or 1 1/4 times the maximum size of the coarse aggregates whichever is greater, by concrete between them. Where this is not feasible, overlapping bars shall be bound with annealed steel wire, not less than 1mm thickness twisted tight in eight shape around the lapped bars. The overlaps shall be staggered for different bars and located at fixed locations only along the span where neither shear nor bending moment is maximum. Welding of Bars Welding of TMT bars can be permitted if specified on the drawings, joints of reinforcement bars shall be butt welded so as to transmit their full strength. Welded joints shall preferably be located at points where steel will not be subject to more than 75 percent of the maximum permissible stresses and welds so staggered that at any one section, not more than 33 per cent of the rods are welded. No pre-warming or post heat treatment is necessary. Interpass temperature should be limited to 200oC with low heat input and equivalent strength low hydrogen type electrode. Suitable means shall be provided for holding the bars securely in position during welding. It must be ensured that no voids are left in welding and when welding is done in 2 or 3 stages, previous surface shall be cleaned property. Ends of the bars shall be cleaned of all loose scale, rust. grease, paint and other foreign matter before welding. Only competent

135

welders shall be employed on the work. Welded pieces of reinforcement shall be tested. Specimens shall be taken from the actual site and their number and frequency of tests shall be as directed by the VMSS Engineer in charge. The TMT Fe-415 bars shall be tested for any or all of the following tests as directed by the Engineer-in-charge. (i) (ii) (iii) (iv) (v) Alternate immersion test Salt spray test Atmospheric exposure test Sluphur dioxide test Potentio dynamic test

Measurements for payment Reinforcement shall be measured in lengths separately for different diameters as actually used in the work including overlaps/ From the length so measured the weight of reinforcements shall be calculated in tonnes as per IS : 1732 lengths shall include hooks at ends, wastage, avoidable overlaps, couplis and welded joints, spaced bars and annealed steel wire for binding shall not be measured and cost of these items shall be deemed to be included in the rates for reinforcement. Reinforcement shall be measured in lengths separately for different diameters as actually used in the work including overlaps/ From the length so measured the weight of reinforcements shall be calculated in tonnes as per IS : 1732 lengths shall include hooks at ends, wastage, avoidable overlaps, couplis and welded joints, spaced bars and annealed steel wire for binding shall not be measured and cost of these items shall be deemed to be included in the rates for reinforcement. 4 Rate Rate for reinforcement shall include cost of all steel including procurement, cost of bending, placing, binding and fixing in position as shown on the drawings and as directed by the Engineer in charge. It shall also include cost of all devices for keeping reinforcement in approved position, cost of jointing as per approved method, and all wastage, overlaps and spacer bars.

136

(5)

STRIP SEAL OR COMPRESSION SEAL /MODULAR TYPE EXPANSION JOINT 1. Components Strip seal expansion joint shall comprise the following items :· · Edge beams ­ This special claw leg profiled member shall be of extruded rolled steel section combining good weldability with notch toughness. Strip seal ­ This shall be of chloroprene with high tear strength, insensitive to oil, gasoline and ozone. It shall have high resistance to aging. This component, provided to ensure water tightness, shall have bulbous shape of the part of the seal which is inserted into the groove, provided in the edge beam. The seal should be vulcanized in single operation for minimum full length of joint. Rigid Anchorage ­ This shall be welded to the edge beam at staggered distance. Anchor loops ­ This shall be made of weldable steel connecting the rigid anchorage with deck reinforcement. Material Edge beams of this special section are at present being directly imported in India. The steel shall conform to steel grade Rst 37-2 of German Standard or equivalent. Chloroprene of strip seal shall conform to clause 915.1 of IRC : 83 (Part ­ II). The properties of chloroprene shall conform to Table 1. Anchorage steel shall conform to IS : 2062. Anchor loop shall conform to IS : 2062.

· ·

2. (a)

(b)

(c) (d)

Table ­ 1 ­ STRIP SEAL ELEMENT SPECIFICATION Sealing element is made of chloroprene and must be a extruded section. The working movement range of the sealing element shall be at least 80 mm with a maximum of 100 mm at right angles to the joint and + 40 mm parallel to the joint. Property Hardness Tensile strength Elongation at fracture

137

Specified Value 63 + 5 Shore A Min 11 Mpa Min 350 percent

Property Tear Propagation Strength Longitudinal Transverse Shock Elasticity Abrasion Residual Compressive strain (22 h/70 deg C/30 percent strain) Ageing in hot air (14 days / 70 deg C) Change in hardness Change in tensile strength Change in elongation at fracture Ageing in ozone (24 h/50 pphm / 25 deg C/20 percent strain) Swelling behaviour in Oil (116 h/25 percent C) ASTM Oil no. Volume Change Change in hardness ASTM Oil no. 3 Volume Change Change in hardness Cold Hardening Point 3. Fabrication (Pre-installation) (i)

Specified Value

Min 10 N / mm Min 10 N / mm Min 25 percent Min 220 mm3 Max 28 percent

Max +5 Shore A Max ­20 percent Max ­20 percent No cracks

Max 5 percent Max 10 Shore A Max 25 percent Max 20 Shore A Min ­35 deg C

Rolled steel profiles for edge beams shall be long enough to cater for a 2-lane carriage way. These shall be cut to size of actual requirements by means of a mitre box saw. Alignment of the cut-to-size steel profiles shall then be made in accordance with the actual bridge cross section on work tables. For this purpose, the contour of bridge cross section shall be sketched onto these tables. After the steel profiles are aligned, they will be chucked to the tables by means of screw clamps and tacked by are welding. Anchor plates shall be cut to the required size by gas cutting. These shall be welded to the edge beams. Anchor loops shall be bent to the required shape and welded to anchor plates. The finally assembled joint shall then be clamped and transported to the work site.

138

(ii)

(iii)

(iv)

4.

Handling and Storage (i) For transportation and storage auxiliary brackets shall be provided to hold the joint assembly together. The manufacturer shall supply either directly to the engineer or to the Bridge Contractor all the materials of strip seal joints including Salamanca and all other accessories for the effective installation of the jointing. Expansion joint material shall be handled with care. It shall be stored under cover on suitable lumber padding by the Contractor to prevent damage. Any damage occurring after delivery shall be made good at the Bridge Contractor's expansive to the satisfaction of the Engineer.

(ii)

(iii)

5. 5.1

Installation The width of the gap to cater for movement due to thermal effect, prestress, shrinkage and creep, superstructure deformations (if any) and sub-structure deformations (if upon the) shall be determined and intimated to the manufacturer. Depending upon the temperature at which the joint I likely to be installed, the gap dimension shall be preset. (i) Taking the width of gap for movement of the joint into account, the dimensions of the recess in the decking shall be established in accordance with the drawings or design data of the manufacturer. The surfaces of the recess shall be thoroughly cleaned and all dirt and debris removed. The exposed reinforcement shall be suitable adjusted to permit unobstructed lowering of the joint into the recess. The recess shall be shuttered in such a way that dimensions in the joint drawing are maintained. The formwork shall be tight. Immediately prior to placing the joint, the presetting shall be inspected. Should the actual temperature of the structure be different from the temperature provided for presetting, correction of the presetting shall be done. After adjustment, the brackets shall be tightened again. The joint shall be lowered in a pre-determined position. Following placement of the joint in the prepared recess, the joint shall be levelled and finally aligned and the anchor loops on one side of the joint welded to the exposed reinforcement bars of the structure. Upon completion, the same procedure shall be followed for the other side of the joint. With the

139

(ii) (iii)

(iv)

expansion joint finally held at both sides, the auxiliary brackets shall be released, allowing the joint to take up the movement of the structure. (v) High quality concrete shall then be filled into the recess. The packing concrete must feature low shrinkage and have the same strength as that of the superstructure, but in any case not less than M 35 grade. Good compaction and careful curing of concrete is particularly important. After the concrete has cured, the movable installation brackets still in place shall be removed. Rolled up neoprene strip seal shall be cut into the required length and inserted between the edge beams by using a crow bar pushing the build of the seal into the steel grooves of the edge beams. A landing to a bead shall be formed in the thickened end of the edges of the seal which would force the thickened end against the steel beam due to wedge effect when the strip seal is buttoned in place. As soon as the concrete in the recess has become initially set, a sturdy ramp shall be placed over the joint to protect the exposed steel beams and neoprene seals from site traffic. Expansion joint shall not be exposed to traffic loading before the carriageway surfacing is placed. The carriageway surfacing shall be finished flush with the top of the steel sections. The actual junction of the surfacing / wearing coat with the steel edge section shall be formed by a wedge shaped joint with a sealing compound. The horizontal leg of the edge beam shall be cleaned beforehand. It is particularly important to ensure through and careful compaction of the surfacing in order to prevent any premature depression forming in it.

(vi)

(vii)

(viii)

Acceptance Test (a) (b) All steel elements shall be finished with corrosion protection system. For neoprene seal, the acceptance test shall conform to the requirements stipulated in Table1. It shall also be stretch tested. If a manufacturer is to supply this type joint, they will have to produce a test certificate accordingly conducted in a recognised laboratory, in India or abroad. In view of the importance of the built up edge means, special investigation of fatigue strength of this section with anchorages to withstand 2 x 104 load change cycles without showing signs of

140

(c)

damage, will be required. The supplier shall have to produce a test certificate in this regard, conducted in a recongnised laboratory, in India or aborad. (d) The manufacturer shall produce test certificates indicating that anchorage system had been tested in a recongnised laboratory to determine optimum configuration of anchorage assembly under dynamic loading. The manufacturer shall satisfy the Engineer that water tightness test for the type of joint has been carried out in a recognized laboratory to check the water tightness under pressure of 4 bars. As strip seal type of joint is specialised in nature, generally of the proprietary type, the manufacturer shall be required to produce evidence satisfactory performance of this type of joint. Tests and standards of acceptance The materials shall be tested in accordance with these specifications and shall meet the prescribed criteria. The work shall conform to these specifications and shall meet the prescribed standards of acceptance. 7. Measurements for Payment The expansion joint shall be measured in running metres. For filled joints, the rate per running metre shall include the cost of sealant for the depth provided in this drawing. 8. Rate The contract unit rate shall include the cost of all materials, labour, equipment and other incidental charges for fixing the joints complete in all respects as per these specifications in the case of Bridge Contractor supplying the expansion joint. If the manufacturer supplies the expansion joint directly to the Engineer, the cost of installation, handling and fixing shall be borne by the Bridge contractor. MODULAR STRIP / BOX SEAL JOINT 1 A modular expansion joint consist of two or more modules / cells to cater to a horizontal movement in excess of 70 mm. It shall allow movements in all 3 directions and rotation about all 3 axes as per design requirements. It shall also ensure that during all movement cycles of the joint, opening and closing (gaps) of all modules are equal.

141

(e)

(f)

6.

(a)

The structural system consisting of two edge beams, one or more central / separation beams or lanellas and cross support bars supporting individual or multiple central beams to transfer the loads to the bridge deck through the anchorage system. Resilient or shock absorption support system for central beams as well as support bars no dampen dynamic loading thus reducing the forces transmitted to the substructure and anchorages as also to accommodate vertical and transverse movements apart from longitudinal movement. Sliding or control system which allows closing and opening of the joint and also ensures that all modules open and close equally. Mechanically locked sealing system of chloroprene which provides watertight, noiseless and easy replacement system. Edge and Central Beams These shal be other extruded or hot rolled steel sections or cold rolled cellular steel sections including continuously shop weded sections for central beams with suitable profile to mechanically lock the sealing element in place throughout the normal movement cycle. Further, the configuration shall be such that the section has a minimum thickness of 6 mm all along the cross section, the minimum height of the edge beam section shall be 75 mm. The steel for edge beams shall conform to any of the steel grade corresonding to RST 37-2 or 37-3 (DIN), ASTM A36 or A558, CAN/CSA Standard G 40.21 Grade 300 W or equivalent. The material for support bars may be same as that of dge / central beams or as per manufacturer's recommendations. Chlorprene Seal This shall be performed extruded single strip of cellular section of chloroprene of such a shape as to promote self removal of foreign material during normal joint operation. The seal shall possess high tear strength and be insensitive to oil, gasoline and ozone. It shall have high resistance to agoing and ensure water tightness. Chloroprene seal shall conform to clause 915.1 of IRC : 83(Part ­ II). The properties of chloroprene shall conform to Table ­ 2 of these specifications.

(b)

(c)

(d)

(i)

(ii)

(iii)

Anchorage The anchorage steel shall conform to IS :2062 or equivalent Edge beam shall be anchored to the deck by anchor plates cast in concrete or a combination of anchor plate and reinforcing bars, headed studs or bolts, Anchor bars, studs or bolts shall engage the main structural reinforcement of the deck and in case of anchor plates or loops, this shall be achieved by passing transverse bars through the loops or plates.

142

The minimum thickness of anchor plate shall be 12 mm. Total cross sectional area of bars, studs or bolts on each side of the joint shall not be less than 1600 mm Sq. per metre length of the joint and the centre to centre spacing shall not exceed 250 mm. The ultimate resistance of anchorages shall not be less than 500 KN/m in any direction. (iv) Support and Control System. The overall system and components of the resilient / shock absorption system and sliding / control system shall conform to the specifications recommended by the manufacturer. The centre to centre spacing of transverse support bars shall not exceed 1.75 m. (v) Corrosion Protection All Steel sections shall be protected against corrosion by hot dip galvanizing or any other approved anti corrosive coating with a minimum thickness of 100 micron. Fabrication (Pre-installation) (a) The modular expansion joint system and all its component parts including anchorages shall be supplied by the manufacturer. The width of the gap to cater for movement due to thermal effect, prestress, shrinkage and creep, superstructure deformations (if any) and sub-structure deformation (if any) shall be determined and intimated to the manufacturer. Depending upon the temperature at which the joint is to be installed, the gap dimension shall be preset. Each modular expansion joint system shall be fabricated as a single entity free from any joint in the longitudinal direction unless stage construction or excessive length prohibits monolithc fabrication, it shall fit the full width of the structure as indicated on the approved drawing. The system shall be pre-set by the manufacturer prior to transportation. Pre-setting shall be done in accordance with the joint opening indicated on the drawing. The finally assembled joint shall then be clamped and transported to the work site.

(b)

(c)

(d)

Handling and Storage. (i) For transportation and storage, auxiliary brackets shall be provided to hold the joint assembly together. (ii) The manufacturer / supplied shall supply either directly to the Engineer or to the Bridge Contractor entire assmbl of Modular Stri / Box Seal joints including sealant and all other accessories for the effective installation of the jointing (iii)Expansion joint material shall be handled with care. It shall be stored under cover on suitable lumber padding.

143

Installation 1. The joint shall be installed by the mnufacturer / supplier only. 2. Taking the width of gap for movement of the joint into account, the dimensions of the recess in the decking shall be established in accordance with the drawings or design data of the manufacturer. The surface of the recess shall be thoroughly cleaned and all dirt and derbies removed. The exposed reinforcement shall be suitably adjusted to permit unobstructed lowering of the joint into the recess. 3. The recess shall be shuttered in such a way that dimensions in the joint drawing are maintained. The formwork shall be rigid and firm. 4. Immediately prior to placing the joint, the presetting shall be inspected. Should the actual temperature of the structure be different from the temperature provided for presetting, correction of the presetting shall be done. After adjustment, the brackets shall be tightened again. 5. The joint shall be lowered in a pre-determined position. Following placement of the joint in the prepared recess, the joint shall be leveled and finally aligned and the anchorage steel on one side of the joint welded to the exposed reinforcement bars of the structure. Upon completion, the same procedure shall be followed for the other side of the joint. With the expansion joint finally held at both sides, the auxiliary brackets shall be released, allowing the joint to take up the movement of the structure. 6. Controlled concrete having strength not less than that in superstructure subject to the minimum of M-35 shall be filled into the recess. The packing concrete must feature low shrinkage. Good compaction and careful curing of concrete is particularly important. After the concrete has cured, the movable installation brackets and shuttering still in place shall be removed. 7. The chloroprene seal shall be field installed in continuous lengths spanning the entire roadway width. To ensure proper fit of the seal and increase the case of installation, dirt, spatter or standing water shall be removed from the steel cavity using a brush, crapper or compressed air. The seal shall be installed without damage to the seal by suitable hand method or machine tools. 8. As soon as the concrete in the recess has become initially set, a sturdy ramp shall be placed over the joint to protect the exposed steel beams and neoprene seals from the site traffic. Expansion joint shall not be exposed to traffic loading before the carriageway surfacing is placed. 9. The carriagway surfacing shall be finished flush with the top of the steel sections. The actual junction of the surfacing / wearing coat with the steel edge section shall be formed by a wedge shapped joint with a sealing compound. The horizontal leg of the edge beam shall be cleaned before hand. It is particularly important to ensure thorough and careful compaction of the surfacing in order to prevent any premature depression forming

144

Acceptance Criteria. (1) (2) All steel elements shall be finished with corrosion protect system. For Chloroprene seal, the acceptance test shall conform to the requirements stipllated in para 3.2. The manufacturer / supplier shall produce a test certificate accordingly, conducted in a recognised laboratory, in India or abroad. Fatigue strength of internal beams ans support connections shall be investigated to withstand 2 million cycles of vertical load of 85 KN and a horizontal load of 10 KN without showing signs of distress. The supplier shall have to produce a test certificate in this regard conducted by a recognised laboratory from India or abroad. The manufacturer shall produce testy certificates indicating that anchorage ststem had been tested in a recognised laboratory to determine optimum configuration of anchorage assembly under dynamic loading. Prior to acceptance 25 percent of the completed and installed joints, subject to a minimum of one joint, shall be subjected to water tightness test. Water shall be continuously ponded along the entire length for a minimum period of 4 hours for a depth of 25 mm above the highest point of deck. The width of ponding shall be at least 50 mm beyond the anchorage bock of the joint on either side. The depth of water shall not fall below 25 mm any time during the test. A close inspection of the underside of the joint shall not reveal any leakage. As Modular strip / box seal type of joint is specialised in nature, generally of the proprietary tye the manufacturer shall be required to produce evidence of satisfactory performance of this product.

(3)

(4)

(5)

(6)

Tests and Standards of Acceptance. The materials shall be tested in accordance with these specifications and shall meet the prescribed criteria. The manufacturer / supplier shall furnish the requisite certficates from the recognised testing laboratory of India or abroad. The work shall conform to these specifications and shall meet the prescribed standards of acceptance.

145

List of Empanelled Indian Suppliers of Different Types of Expansion Joints for Highway Projects Sr No Name and Address of Indian Supplier Name and Address of Foreign Manufacturers/Colla borators 1) Maurer Shone, P.O.Box-400 145 D-8000. Munchen-44 Germany Types of Expansion Joints Details of items to be imported from foreign manufacturers / Collaborator Edge Beam & Strip Seal All items Rema rks

1

J. Sons Engineering Corporation Ltd., J. Sons House, Garh Road, Meerut-250 002

a) Single Strip Seal b) Modular Strip Seal

Compression Joint Seal & 2) E-Poxy Industries Seal (Closed Cell Adhesive cum Inc. 14, Foam Seal) lubricant West Shore Street / Ravena, New York-12143 USA

2

3

Metal Engineering & Treatment Co. Pvt. Ltd., 42-B Motilal Basak Gardens, Calcutta-700 012 Sanfield (India) Pvt. Ltd., 67-Zone-II, Maharana Pratapnagar, Bhopal-161 011

Mageba Sa Solistrasse 68, CH-8189 Baluch, Switzerland

a) Single Strip Seal b)Modular Strip Seal c)Asphaltic Plug Watson Bowman a) Single Strip Seal Acme Manufacturing and Order Processing, b)Modular Strip Seal 95 Pinview Drive, c) Compression Ambrest, New York, Seal USA-14228 (Chloropren Seal) d) Asphaltic Plug Asphaltic Binder Plug

Edge Beam & Strip Seal All items Binder Edge Beam & Strip Seal All items

Joint Seal & Adhesive cum Lubricant Binder.

4

Prismo Limited, Asphalt Construction-(I) Pvt. West Sussex, United Kingdom. Ltd., 1st Floor, Sonawala Building, 59 Bombay Samachar Marg, Fort, Mumbai-400 024

146

Sr No

Name and Address of Indian Supplier

Name and Address of Foreign Manufacturers/Colla borators The D S Brown Company, 300 E, Cherry Street, North Baltimore, Ohio 45872 USA Z-Tech Inc., 370, Lajeunesse St. Jerome (Quebee), Canada-J7Y4E6

Types of Expansion Joints

5

6

Choksey Chemicals Ltd., 111 Industrial Area, Sion, Mumbai- 400 020 Z-Tech (India) Pvt. Ltd., J-1867 C.R. Park, New Delhi-110 019

Modular Seal

Details of items to be imported from foreign manufacturers / Collaborator Strip All items

Rema rks

a) Single Strip Seal b) Modular Strip Seal c) Compression Seal (Chloroprene Seal) d) Asphaltic Plug

Edge Beam & Strip Seal All items

Joint Seal & Adhesive cum Lubricant Binder.

Note :- (1)

The joints shall be installed under supervision of Principal Company i.e. D.S.Brown Company until it is certified by D S Brown Company that Choksey Chemicals Pvt. Ltd., has obtained requisite experience in installation of the joints. At the time of procurement of joints, if any company supplier got approved with the MORT&H/MOST, in addition t the above listed companies/supplier shall be considered. However any company/supplier, if disqualified by the MOST/MORT&H than such company/supplier stands disqualify for supplying the joints.

(2)

147

(6) 1.

SPECIFICATIONS FOR ELASTOMERIC BEARINGS : SCOPE : The work to be done under the specification comprises of supply, delivery, testing & erection of Elastomeric bearing pads for bridges as per approved drawings.

2.

REFERENCES : Reference is made in this specification to the followings standards of the American Society for Testing and Materials. D 395 - 69 "Standard methods of test of compression set of vulcanised Rubber" "Tension testing of Vulcanised rubber" "Accelerated aging of Vulcanised rubber" Tear resistance of Vulcanised rubber. Young's modules in flexure of natural and synthetic elastomers at normal and subnormal temperatures. "Accelerated zone cracking of Vulcanised rubber" "Indentation hardness of rubber and plastics by means of a Durometer".

D 412 ­ 68 D 573 ­ 67 D 624 ­ 54 D 797 ­ 64

D 1149-64 D 2240 ­ 68

Specifications of road and bridge works including all amendments published by Ministry of Road Transport and Highways (Road Wing) Govt. of India. 3. MATERIALS : The plain bearing pads or elastomer portion of restrained pads shall be of a high quality vulcanized elastomeric compound known as "Neoprene" and shall meet the physical properties given below. Restrained pads shall have either intermediate mild steel plates of thickness specified in the drawing and shall conform to IS 226 (latest edition). The edges of all plates shall be lightly rounded or chamfered.

148

1. PHYSICAL PROPERTIES : The elastomeric material (Neoprene) used in the manufacture of the bearing shall meet the following physical requirements : Physical Property Test Method Performance requirements Hardeness grade. 50 60 70 (50+/-5) (60+/-5) (70+/-5) Point Point Point 175 175 175 Minimum Minimum Minimu m 400 350 Minimum Minimum 40 40 Minimum Minimum 700 (Kg/cm2) 700 (Kg/cm2) 300 Minimu m 40 Minimu m 700 (Kg/cm2)

Hardeness (Durometer-A) Tensile Strength (Kg/cm2)

ASTM D 2240 ASTM D 412

Elongation (percentage)

at

break ASTM D 412

Tear resistance (DIA c) ASTM D 624 (Kg/t in cm.) Low temperature stiffness ASTM D 797 (Max. Young's modules at minus 40 degree centigrade ­ Kg/cm2) Resistance to heat aging ASTM D 573 (Change in original properties after 70 hours at 100 C) Hardness (Durometer-A) elongation (% max.) Tensile strength (% Max.) Resistance to oil ageing ASTM D 171 (change in volume after 70 hrs. immersion in ASTM oil No. 3 at 100 C. (% Max.) Resistance to ozone ASTM D 1119 condition exposure to 1 ppm ozone in air for 100 hrs. at 38 c and sample under 20% strain. Resistance to permanent set ASTM D 395 (compre-ssset after 22 hrs. at 70 degree C. (method B) (% max.)

+/- 25

+/-15 -15 +/- 15 + 80

+/-15 -15 +/- 15 + 80

+/- 25 + 80

No Cracks

No Cracks

No Cracks

25

25

25

149

The supplier shall give a certificate with each supply of bearings that the Neoprene used in the manufacture has been composed to have the above properties when tested in accordance with the relevant standard method indicated. However in case of doubt, the purchaser may demand and the supplier shall perform on samples of material, any or all tests indicated above at his own cost to demonstrate conformance of the materials supplied with the properties specified above. Note : The above tests are for verification of basic properties of the Neoprene material used in the bearings and should be distinguished from the acceptance tests specified here in below which shall be carried out on the number of samples as specified. 5. TOLERANCES : 1. No negative tolerance shall be permitted on any of the dimensions of the pad. 2. Positive tolerance on thickness shall be 0.7 mm. for single layer pads and 0.8 x n mm. for multi layer pads where "n" is the number of layers. 3. Positive tolerance on any of the plan dimensions shall not exceed 3 mm. 4. No bearing with any visible defect with wrap, twist etc. shall be accepted. 6. (9) ACCEPTANCE TESTS : Number of tests and criteria of acceptance : (1) Two percent of the bearing pads or individual layers in the case of multi layer pads from each batch offered for supply (subject to at least one pad) shall be subjected to the acceptance tests as per MOST specification for road and bridge works. Samples for testing shall be selected at random by the purchaser or his agent, from the lot offered. In case of multi layer pads, tests shall be made on individual layers only. The cost of samples for tests as well as the cost of testing and supply of test reports shall be borne by the contractor. If the samples selected for testing pass the tests for compression strain and tests for shear strain and bonding efficiency, the whole lot represented by the samples shall be accepted. If the samples selected for the tests fail to meet the requirement of these tests than a retest shall be conducted on double the number of samples selected at random. If all the samples selected for retest meet the requirements of the tests, then the lot shall be accepted, otherwise the lot shall be rejected.

(2)

(3) (4)

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7.

MEASUREMENT FOR PAYMENT : Measurement for payment shall be as per the unit mentioned in the Bill of Quantities. (A) The rate for the elastomeric bearings shall include the cost of bearing supply of labour, tools, adhesive material fixing and equipments required for placing and fixing the bearings in correct alignment and level. The rate shall also include necessary cost of samples and their testing required as per specifications.

List of pre-qualified manufacturers of elastomeric bearings for supply to bridges on National Highways and other centrally sponsored schemes Sr. Name of the firm No. 1 Elastomet Bearings Pvt. Ltd., 42-B Motilal Basak Gardens, Calcutta-700 054 2 Exjomet & Allied Products Pvt. Ltd., 42-B Motilal Basak Gardens, Calcutta-700 054 3 Atur Rubber Products,r Atur Chambers, 2-A Moledina Road, Pune-411 001 4 Construction Equipments Company, C-6, Shastrinagar, Meerut ­ UP. 5 J.K.Steel & Polymer (India), 506, Model Town, Yamunanagar-135 001, Haryana. 6 Hevea Rubber Technologies Pvt. Ltd., 21, Development Plot, YMA Road, Poovanthuruthu, P.O. Kottayam-686 012, Kerala. 7 The Freyssinet Prestressed Concrete Co. Ltd., 2nd Floor, Alankar Cinema Building, Lajpatnagar-III New-Delhi ­ 110 024 8 J. Sons Engineering Corporation Ltd., E-341 Mayur Vihar, Phase-II, Delhi-110 091 9 Steel Auto Industries, 506,Model Town, Yamunanagar-135 001. Haryana 10 Sanfield India Ltd., 62 Zone-II, M.P. Nagar, Bhopal-462 011 (MP) 11 Killick Nixon Limited, Killick House, Killick Estate, Baji Pasalkar Marg, Chandivli, Bombay-400 072

NOTE: - 1. At the time of procurement of bearings, if any company supplier got approved with the MORT&H/MOST, in addition the above listed companies/supplier shall be considered. However any company/supplier, if disqualified by the MOST/MORT&H than such company/supplier stands disqualify for supplying the bearings. 2. The tenderer shall have to procure the POT/POT cum PTFE Bearings from the vendors approved by MOST/MORTH and shall have to be pre approved by the Engineer- In _ Charge prior to placing the orders & execution

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ITEMWISE SPECIFICATIONS FOR

STRENGTHENING AND WIDENING OF BRIDGE ACROSS DRAIN NEAR MANGLESHWAR AT VADODARA Item No. 1 Clearing the site before commencement and clearing of drain under the bridge and 50mt on U/S & D/S side after completion of work. 201. 201.1. CLEARING AND GRUBBING Scope This work shall consist of cutting, removing and disposing of all materials such as trees, bushes, shrubs, stumps, roots, grass, weeds, top organic soil not exceeding 150 mm in thickness, rubbish etc., which in the opinion of the Engineer arc unsuitable for incorporation in the works, from, the area of road land containing road embankment, drains, cross-drainage structures and such other areas as maybe specified on the drawings or by the Engineer. It shall include necessary excavation, backfilling of pits resulting from uprooting of trees and stumps to required compaction, handling, salvaging, and disposal of cleared materials. Clearing and grubbing shall be performed in advance of earthwork operations and in accordance with the requirements of these Specifications. 201.2. Preservation of Property/Amenities Roadside trees, shrubs, any other plants, pole lines, fences, signs, monuments, buildings, pipelines, sewers and all highway facilities within or adjacent to the highway which are not to be disturbed shall be protected from injury or damage. The Contractor shall, provide and install at his own expense, suitable safeguards approved by the Engineer for this purpose. During clearing and grubbing, the Contractor shall take all adequate precautions against soil erosion, water pollution, etc., and where required, undertake additional works to that effect vide Clause 306. Before start of operations, the Contractor shall submit to the Engineer for approval, his work plan including the procedure to be followed for disposal of waste materials, etc., and the schedules for carrying out temporary and permanent erosion control works as stipulated in Clause 306.3. 201-3. Methods, Tools and Equipments Only such methods, tools and equipment as are approved by the Engineer and which will not affect the property to be preserved shall be adopted for the Work. If the area has thick vegetation/roots/trees, a crawler or pneumatic tyred dozer of adequate capacity may be used for clearance purposes. The dozer shall have ripper attachments for removal of tree stumps. All trees, stumps, etc., falling within excavation and fill lines shall be cot to such depth below ground level that in no case foil within 500 mm of the subgrade. Also, all vegetation such as roots, undergrowth, grass and other deleterious matter unsuitable for incorporation in the

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embankment/subgrade shall be removed between fill lines to the satisfaction of the Engineer. On areas beyond these limits, trees and stumps required to be removed as directed by the Engineer shall be cut down to 1 m below ground level so that these do not present an unsightly appearance. All branches of trees extending above the trimmed as directed by the Engineer. All excavations below the general ground level arising out of the removal of trees, stumps, etc., shall be filled with suitable material and compacted thoroughly so as to make the surface at these points conform to the surrounding area. Ant-hills both above and below the ground, as are liable to collapse and obstruct free subsoil water flow shall be removed and their workings, which may extend to several metres, shall be suitably treated. 201.4. Disposal of Materials All materials arising from clearing and grubbing operations shall be the property of Government and shall be disposed of by the Contractor as hereinafter provided or directed by the Engineer. Trunks, branches and stumps of trees shall be cleaned of limbs and roots and stacked. Also boulders, stones and other materials usable in road construction shall be neatly stacked as directed by the Engineer. Stacking of stumps, boulders, stones etc., shall be done at specified spots with all lifts and upto a lead of 1000 m. All products of clearing and grubbing which, in the opinion of the Engineer, cannot be used or auctioned shall be cleared away from the roadside in a manner as directed by the Engineer. Care shall be taken to see that unsuitable waste materials are disposed of in such a manner that there is no likelihood of these getting mixed up with the materials meant for embankment, subgrade and road construction. 201.5. Measurements for Payment Clearing and grubbing for road embankment, drains and cross-drainage structures shall be measured on area basis in terms of hectares. Clearing and grubbing of borrow areas shall be deemed to be a part of works preparatory to embankment construction and shall be deemed to have been included in the rates quoted for the embankment construction item and no separate payment shall be made for the same. Cutting of trees upto 300 mm in girth including removal of stumps and roots, and trimming of branches of trees extending above the roadway shall be considered incidental to the cleanng and grubbing operations. Removal of stumps left over after trees have been cut by any other agency shall also be considered incidental to the clearing and grubbing operations. Cutting, including removal of stumps and roots of trees of girth above 300 mm and backfilling to required compaction shall be measured in terms of number according to the sizes given below:i) Above 300 mm to 600 mm ii) Above 600 mm to 900 mm

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iii) Above iv) Above

900 mm to 1800 mm 1800 mm

For this purpose, the girth shall be measured at a height of 1 metre above ground or at the top of the stump if the height of the stump is less than one metre from the ground. 201.6. 201.6.1. Rates The Contract unit rates for the various items of clearing and grubbing shall be payment in full-for carrying out, the required operations including full compensation for all labour, materials, tools, equipment and incidentals necessary to complete the work. These will also include removal of stumps of trees less than 300 mm in girth as well as stumps left over after cutting of trees carried out by another agency, excavation and back-filling to required density, where necessary, and handling, salvaging, piling and disposing of the cleared materials with all lifts and upto a lead of 1000 m. The Contract unit rate for cutting (including removal of stumps and roots) of trees of girth above 300 mm shall include excavation and backfilling to required compaction, handling, salvaging, piling and disposing of the cleared materials with all lifts and upto a lead of 1000 m. Where a Contract does not include separate items of clearing and grubbing, the same shall be considered incidental to the earthwork items and the Contract unit prices for the same shall be considered as including clearing and grubbing operations.

201.6.2.

201.6.3.

Item No. 2 Marking out the centre line of the bridge and various other component structure and complete lining out and levelling with theodolite, levels including constructing necessary masonry pillars for lines and levels and establishing necessary benchmarks etc complete as directed. 1. The center line axis of the dual two lane bridge is to be done for bridge and also for approaches / retaining walls in both ends shall be surveyed along their lengths. Center line pegs for each two lane bridge, ramps including foundation pegs at each location and at suitable distance of 3.0 m c/c along the approach on each side shall be fixed. All deviation angles of the central line axis for both the two lane bridge including tangent distances shall be demarcated with pegs fixed in to the ground. The rate on Lump sum basis shall include all equipments, survey instruments, necessary survey party, supply and fixing of pegs including, fixing of pillars for intermediate stations labour, materials required in completing the job as required, as per direction of Engineer-in-charge.

2. 3.

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Item No. 3 Dismantaling of the part the of existing structure including removing and stacking the dismentaled material as and where directed. A. Dismantaling of brick masonary B. Dismantaling of RCC work 1. Since excavations for open foundations as well as for pile cap at some locations are to be carried out on existing road, it will be required to break open existing pavement structures. Also, as Urban development around is of recent origin of about 25 years, it is expected that masonry or concrete or any such structure may be encountered during excavation for foundation. Such obstructions irrespective of size, shape, weight shall be removed under this item. The rate shall be for all labour including breaking, removing obstructions as above mentioned, conveying and stacking/disposing off the same as may be directed.(All the dismantled materials including reinforcement steel ,rubble etc shall be property of contractor) Rate shall be paid per cu.mt of the material handled.

2.

3.

Item No. 4 Providing and installation of pannel barricades including supplying, painting with fluorescent paint and fixing MS Plain sheets 24 SWG of 1.8 m height and M.S. Posts angle 40 x 40 x 5 mm at 2.0 m c/c and dismantling the same after completion of work with lettering as directed by Engineer and as per drawing directed by engineer. 1. M. S. fabricated traffic barricading by MS Plain sheet on either side of the carriage way / portion of the carriage way for closing traffic shall be provided, fixing and maintaining throughout the execution period by the contractor as per direction of Engineer in charge. 2. The measurement for payment shall be in Running Meter basis. 3. The rate includes all the work required to be done for this item including cost of all materials, labour, plant and everything required to execute this item. Item No. 5 Excavation for foundation in sand, gravel clay, soft soils and murrum etc. including refilling the tranches in layers with watering ramming etc. complete including shoring, struting and dewatering as necessary and disposing off the excavated stuff as directed upto a lead of 90 m. a. Upto 3.0 m 1. 2. 3. 4. The relevant specifications given for earthwork in excavation and back filling shall apply for this item. The measurement for payment shall be in Cubic meter basis. Adequate pumping arrangement shall be made for dewatering, if required. The rate includes all the work required to be done for this item including cost of all materials, labour, plant and everything required to execute this item.

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Item No. 6 Carting of excavated material such as murrum, earth, kapachi, gravel, brick bats, kankar sand etc. complete to the site as directed upto with in VMC limit and loading unloading etc. complete. 1. All the super earth etc. shall be carried away immediately from the site of work to a place within VMC limit. Distance as directed and ordered by the Engineer so as not to cause any inconvenience to the public traffic failing which in view of public safety and traffic convenience. The corporation shall carry out the work by any other agency at the contractor's risk and cost. If the instruction are not complied within 7 days from the date of order or cart the surplus materials and clear the site, the said work shall be carried out by the Municipal corporation at the risk and cost of the contractor and no claim or dispute shall be entertained in this respect. If the filing in the trenches after settlement of the earth filing in trenches is no done and the same shall be carried out by the contractor without asking any extra rate. The contractor shall have to cart the surplus earth after the trenches will watered and refilled with the sand. The rate of carting including carting of brickbats, metal, rubble, vegetation and garbage, if necessary to clear the road surface. The Measurement of the item shall be in Cu.mt basis. The rate includes cost carting, labour , plants, equipments and everything necessary for complete this item..

2.

3. 4.

5. 6.

Item No. 7 Diversion of watercourse, providing cofferdam and bund or island as may be necessary for foundation and maintaining the same for the period as may be necessary. 1.1 This item provides for the construction of cofferdam which shall be temporary enclosure built to exclude water from the working area and to permit free access to the area during, the execution of work. It shall be vented at suitable locations for allowing river flow during the working season. The cofferdam may be made of earth, filling in suitable stable profile as per site conditions with enough working space allround. The contractor shall have to make his own arrangement for the procurement of each for the construction of cofferdam at his own cost. The rate of the item includes the cost of construction and maintenance of any cofferdam approach bund or other devices etc. necessary for draining the flow of water or any such item of any sort whatsoever required to prevent water entering the foundation trenches. The cofferdam shall have to be maintained till the completion of working period. The rates shall accordingly include the provision of reconstruction or making good the damages as per requirements for subsequent one or more working seasons if necessary. The contractor shall have no claim for any extra payment for such maintenance work due to such contingent requirements. The rate includes all

1.2

1.3

1.4

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arrangement for operations, excavations and earth work in embankment necessary plants, labour maintenance etc. 1.5 The payment for this item shall be made per Number of cofferdam.

Item No. 8 Providing and filling in foundation with ordinary cement concrete M10 mix including formwork, vibrating, ramming and curing complete. 1. 2. 3. Relevant specifications of Plain, Reinforced concrete given shall apply to this item. The measurement of payment shall be in cubic meter of concrete. The rate includes all materials, labor, plant, formwork, curing etc. & everything required to complete this item.

Item No. 9 Empty boring through all sorts of strata for providing1.0 m dia. bored piles to required depth including providing necessary casing pipe with all plants and equipments as required complete. 1000 mm dia pile 1. MORT&H specifications as in section 1100 shall be followed in connection with this item. All relevant provisions as have been included in the respective IRC and IS specifications are also applicable. Measurement shall be in running meter. The rate shall include cost of all labour, materials, tools and equipments as required and disposal of the slurry / scum etc. as per the item.

2. 3.

Item No. 10 Providing and laying controlled cement concrete M35 for R.C.C. bored piles including ramming, vibrating, curing and finishing etc. complete. 1. 2. 3. Relevant specifications given for pile foundations and plain and reinforced concrete shall be applicable to this item. The measurement shall be in cubic meter of concrete done. The rate for this item includes cost of concrete, labour, materials, and equipments.

Item No. 11 Providing and placing in position M.S. liner for 1000 mm dia. R.C.C. bored piles incl. Cutting, bending, welding, fabricating, driving etc. complete. (t = 6 mm) 1. 2. 3. The relevant specifications shall be given for pile foundation works shall apply to this. The measurement shall be given on MT basis. The rate includes cost of all materials, labor, plants & equipment's and every thing necessary for this item.

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Item No. 12 Providing and casting in situ controlled cement concrete M-30 for R.C.C. work in pile cap as per drawing including centering, shuttering, scaffolding where necessary laying vibrating curing and finishing complete. 1. 2. 3. Relevant specifications given for pile foundations and plain and reinforced concrete shall be applicable to this item. The measurement shall be in cubic meter of concrete done. The rate for this item includes cost of concrete, labour, materials, and equipments.

Item No. 13 Conducting low strain pile integrity testing on RC Bored foundation piles using pile integrity tester equipment manufactured by Pile Dynamics Inc. of USA or TNO of Netherland or equivalent that confirms to ASTM D5882. 1. 2. The relevant specifications for pile testing as given for piling work shall apply to this. Low strain pile integrity testing on RC bored foundation piles using pile integrity tester equipment manufactured by pile dynamics inc. of USA of TNO of Netherland or equivalent that confirms to ASTM D5882 shall be conducted Test shall be conducted by experienced independent test agency. The measurement shall be per number of load test on piles. The rate includes cost of materials, labour, plants and equipments etc. required for carrying each load test.

3. 4. 5.

Item No. 14 Conducting high straining dynamic pile testing on R.C. of Bored piles using pile driving analyzer. The equipment shall have ability to record both force and velocity. Both straic and acceleration censors shall be used to collect data and atleast two pairs shall be connected at diametrically opp. sides of the pile. The test and equipment shall conform to ASTM - D4945 - 1989. The test shall be conducted by an experienced independent test agency. 1. 2. 3. 4. 5. The relevant specifications for pile testing as given for piling work shall apply to this. High strain dynamic pile testing shall be as per ASTM-D4945-1989. Test shall be conducted by experienced independent test agency. The measurement shall be per number of load test on piles. The rate includes cost of materials, labour, plants and equipments etc. required for carrying each load test.

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Item No. 15 Providing and casting in situ controlled cement concrete M-30 for R.C.C. work in piers, abutments, side walls, tie walls etc as per drawing including centering, shuttering, scaffolding where necessary laying, vibrating, curing and finishing complete. A. Piers B. Abutment wall, side wall and tie walls 1. 2. 3. Relevant specifications given for plain and reinforced concrete shall be applicable to this item. The measurement shall be in cubic meter of concrete done. The rate for this item includes cost of concrete, labour, materials, and equipments.

Item No. 16 Providing and casting in situ controlled cement concrete M-30 for R.C.C work in piercap, abutment cap, seismic restrainers and dirt wall including controlled cement concrete M-30 bed block or pedestals of required size below bearings as per detailed drawings wherever necessary laying, vibrating, curing and finishing complete. 1. 2. 3. Relevant specifications given for plain and reinforced concrete shall be applicable to this item. The measurement shall be in cubic meter of concrete done. The rate for this item includes cost of concrete, labour, materials, and equipments.

Item No. 17 Providing 15mm thick cement plaster in single coat on brick/concrete walls. 1. 2. 3. 4. Surface for brick/concrete wall shall be cleaned, free from any dust for applying the cement plaster. Single coat of 15 mm thick cement plaster in Cement Mortar 1:3 shall be provided as per direction of Engineer in charge. The Measurement shall be in Sq.mt basis. The rate includes labour, material, curing, finishing etc. complete this item.

Item No. 18 Applying two coats of waterproof cement paint of an approved brand and manufacture on Brick arch and pier. 1. 2. 3. 4. Brick arch and pier shall be cleaned free from dust before applying water proof cement paint. Two coats of water proof cement paint of an approved branch and manufacture shall be applied on clean surface or brick arch and pier. The measurement shall be in Sq.mt basis. The rate includes labour, material, curing, finishing etc. complete this item.

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Item No. 19 Providing and laying in position fully moulded restrained elastromeric bearing as per detailed drawings. 1. 2. 3. Relevant specifications given for Elastomeric bearing shall be applicable to this item. The measurement shall be in Cu.cm of bearing. The rate for this item includes cost of concrete, labour, materials, and equipments.

Item No. 20 Providing and casting in situ controlled cement concrete M 30 for R.C.C. Work in cast in situ Solid slab type superstructure including centering, shuttering, scaffolding ramming, vibrating, curing and finishing complete. 1. Relevant specifications of Plain, Reinforced concrete given shall apply to this item. 2. The measurement of payment shall be in cubic meter of concrete. 3. The rate includes all materials & labour , centering, shuttering, Scaffolding, ramming, vibrating, curing and finishing to complete this item. Item No. 21 Providing and casting in situ controlled cement concrete M 30 for 75 mm. thick wearing coat with trimix method laid as directed including tamping, vibrating, finishing, curing and filling in joints with bitumen and groove cutting complete. 1. Relevant specifications of Plain, Reinforced concrete given shall apply for wearing coat with trimix method. 2. The measurement of payment shall be in cubic meter of concrete. 3. The rate includes all materials & labour, tamping, vibrating, finishing, curing and filling in joints with bitumen and groove cutting complete. Item No. 22 Providing and casting in situ controlled cement concrete M 40 for crash barrier as per detailed drawing including formwork, curing and finishing complete. 1. 2. 3. Relevant specifications given for plain and reinforced concrete shall be applicable to this item. The measurement shall be in cubic meter of concrete done. The rate for this item includes cost of concrete, labour, materials, equipments and 50 mm dia PVC pipe for carrying cables for electrification.

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Item No. 22A Providing, fixing and erecting 50 mm dia painted M.S. Pipe on R.C.C. crash barrier including inserts at 1m c/c, welding etc. complete as per approved drawing and directed by Engineer etc. complete. 1. 50 mm dia printed M.S. Pipe shall be provided and fixed on RCC crash barrier including inserts at 1m c/c, welding etc. complete 2. The measurement of pipe shall be in Running Meter basis. 3. The rate for this item includes all materials, labor, plants etc. and every thing required to execute this item. Item No. 23 Providing and casting in situ M-30 controlled cement concrete for R.C.C. Kerb as per drawing including formwork, curing, shuttering, vibrating, finishing etc.complete and including providing 50 mm dia PVC pipe for carrying cables for electrification as directed. 1. Relevant specifications of Plain, Reinforced concrete given shall apply to this item. 2. The measurement of payment shall be in cubic meter of concrete. 3. The rate for this item includes cost of concrete, labour, materials, equipments and 50 mm dia PVC pipe for carrying cables for electrification. Item No. 24 Providing & laying precast R.C.C. footpath slab in controlled cement concrete M-20 (7.0 cm thickness) grade including necessary reinforcement & providing and setting chequred tiles in cement mortar1:5 as per drawing incl. necessary formwork curing and finishing etc. complete. 1. The relevant specifications of controlled cement concrete shall apply for the precast RCC slabs. The footpath slab shall be precast & shall be of grade & thickness as per item. The relevant specifications for reinforcement shall apply for the reinforcement in the slab. The chequered tiles shall be of the quality and make as approved by the Engineer - in ­ charge. The setting of chequered tiles shall be in C.M. 1:5 as directed by the Engineer - in ­ charge. The measurements for payment shall be on Sq.mt. basis. The item includes cost of materials, including necessary reinforcement, providing & fixing of chequered tiles on the slab, labour, plant, form work including fixing the RCC slabs & chequered tiles in position.

2. 3.

Item No. 25 Providing, casting & fixing in position M-30, controlled cement concrete cast in situ / precast in line and level RCC parapet as per drawing including necessary reinforcement, handling, transporting etc. 1. Relevant specifications of Plain, Reinforced concrete given shall apply to this item. 2. The measurement of payment shall be in Rmt of parapet.

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3. The rate includes all materials & labour , centering, shuttering, Scaffolding, ramming, vibrating, curing and finishing to complete this item. Item No. 26 Providing and filling sand behind abutment and return as directed. 1. 2. 3. 4. 5. 6. The sand of approve quality by Engineer in charge shall be filled behind abutment and returns. The sand shall be clean. The sand shall be filled in layers of 23 cm to 30 cm thickness. Sand shall be first stack on fairly level ground. The measurement for payment shall be made on Cmt. basis. The unit rate includes the cost of materials, labour and tools to complete the work.

Item No. 27 Providing and casting in situ controlled cement concrete M 30 for approach slab including form work curing and finishing complete. 1. Relevant specifications of Plain, Reinforced concrete given shall apply to this item. 2. The measurement of payment shall be in cubic meter of concrete. 3. The rate includes all materials & labour , centering, shuttering, Scaffolding, ramming, vibrating, curing and finishing to complete this item. Item No. 28 Providing and placing in position TMT Fe 415 bar reinforcement conforming to IS 1786 for foundation including curing, bending, hooking and tying complete as per detailed drawing. A. For piles B. For pilecap 1. 2. 3. The relevant portion pertaining to specifications of reinforcement specifications for plain, reinforced cement concrete and prestressed concrete shall apply to this. The measurement shall be in M. Tons. The rate includes cost of materials, plants, labour etc. required to complete the item.

Item No. 29 Providing and laying in position TMT Fe 415 reinforcement conforming to IS 1786 including cutting, bending, hooking and tying complete as per detailed drawings for retaining wall, abutment cap & dirt wall, side wall, tie wall & abutment wall, piers, piercaps and pedestals. 1. The relevant portion pertaining to specifications of reinforcement specifications for plain, reinforced cement concrete and prestressed concrete shall apply to this. 2. The measurement shall be in M. Tons. 3. The rate includes cost of materials, plants, labour, cutting, bending, hooking etc. required to complete the item.

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Item No. 30 Providing and placing in position TMT Fe 415 reinforcement conforming to IS 1786 including cutting, bending, hooking and tying complete as per detailed drawing for : Structure 1. The relevant portion pertaining to specifications of reinforcement specifications for plain, reinforced cement concrete and prestressed concrete shall apply to this. 2. The measurement shall be in M. Tons. 3. The rate includes cost of materials, plants, labour, cutting, bending, hooking and tying complete as per detailed drawing for Structure. Item No. 31 Providing and fixing in position TMT Fe 415 bar reinforcement conforming to IS 1786 including cutting, bending and tying complete as per detailed drawings for : RCC wearing coat, RCC approach slab, Crash barrier 1. The relevant portion pertaining to specifications of reinforcement specifications for plain, reinforced cement concrete shall apply to this. 2. The measurement shall be in M. Tons. 3. The rate includes cost of materials, plants, labour etc. required to complete the item. Item No. 32 Providing and fixing in position required size of strip seal expansion joint for 40 mm expansion gap conforming to prescribed specifications and type as per sketch given including providing all fixtures, hold fasts, anchor bars, nuts, bolts, inserts, embedments, etc. as any be directed. 1. Relevant specifications given for strip seal / modular type expansion joints shall apply to this item. 2. The measurement shall be in running meter of expansion joint provided. 3. The rate includes all materials, labour, plants etc. everything required to execute the item. Item No. 33 Providing and laying filter media 600 mm. thick as directed at the back of abutments and returns as per detailed specifications. 1. Well graded pebbles or metal of 40 mm to 63 mm size shall be used. The grading and tolerance of metal of pebbles should be as under. Sr. No. of Size range Sieve designation Percentage by weight No. passing through the sieve 100-50 1. 63 mm to 40 mm 90 mm 85-100 63 mm 35-70 50 mm 00-15 40 mm 00-05 20 mm

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2. 3. 4.

The size shall be 40 mm to 63 mm wherein, tolerance limit for oversize shall be upto 15% and that for lower size should be upto 15%. below 20 mm. It shall be tightly placed to a thickness not less than 600 mm and provided over the entire surface behind abutments wings or return walls to the full height. Materials shall be first stacked in boxes of 2 m x 1.5 m x 0.5 m size on fairly level ground and measured. The measurement for payment shall be made on square meter basis. The unit rate includes the cost of materials, scaffolding, labour and tools to complete the work.

Item No. 34 Providing and laying weep hole in abutment and return by using PVC pipes of 100 mm. Diameter 6kg/sqcm capacity pressure pipe including laying in proper grade and joining etc. complete as per detailed specifications. 1. WEEP HOLE Weep holes shall be provided in solid plain concrete/reinforced concrete, brick/stone masonry, abutment, wing wall and return walls as shown on the drawing or directed by the Engineer to drive moisture from the back filling. Weep holes shall be provided with 100 mm dia using PVC pipes 6 kg/sqcm capacity pressure pipe. Weep holes shall extend through the full width of concrete/masonry with slope of about 1 vertical: 20 horizontal towards the draining face. The spacing of weep holes shall generally be 1 m in either direction or as shown in the drawing with the lowest at about 150 mm above the low water level or ground level which is higher or as directed by the Engineer. Approved makes for PVC weep holes is Supreme and Finolex. Measurements shall be given on number of weep holes provided. The rate includes all materials, labors, equipments and plants etc. required for executing this item.

2. 3.

Item No. 35 Providing G. I. 100 mm. Diameter water spouts including necessary iron gratings as per drawings. 1. 2. Material for the water spout shall be as mentioned in the item and shall be got approved from the Engineer-in-charge. Water spout shall be 100 mm internal dia G.I. rating shall be provided at the entry and shall be fixed in the recess so as to be flush with the road surface. The quality and size of the grating shall be got approved for the Engineer-in-charge. The water spouts shall project at-least 10 cm. outside the concrete and shall be rigidly fixed in it. The grating and C.I. pipes shall be painted with two coats of anticorrosive black bitumen paint. Measurement shall be per number of water spout fixed. Unit rate includes cost of all materials, labour and tools to complete the work.

3. 4.

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Item No. 36 Providing & Applying One component dual shrinkage-compensated structural Grade ready to use repair mortar in two or three layer over one coat of epoxy bond coat (which shall paid sepretely) for repairs of beams etc. including all materials, labour etc. for all heights, location, shape & size.The finish surface to be level matched with the existing adjoining surface etc. complete as directed by Architect/ Engineer Incharge. [Quantity consumed shall be accounted for payment purpose]. 1. One component dual shrinkage-compensated structural Grade ready to use repair mortar in two or three layer over one coat of epoxy bond coat (which shall paid sepretely) for repairs of beams etc. shall be provided as per direction of Engineer-incharge. The Measurement shall be in Kg basis. The rate includes all materials, labour etc. for all heights, location, shape & the finish surface to be level matched with the existing adjoining surface etc. complete as directed by Architect/ Engineer Incharge.

2. 3.

Item No. 37 Providing and applying two or more coats of 2 component zinc based epoxy rust preventer on reinforcement after cleaning and removing the rust from corroded reinforcement with the help of wire brush and treating it with rust remover of approved make including thoroughly cleaning, washing, airblowing, brushing etc. complete as directed by Architect/ Engineer Incharge. [Quantity of Zinc based epoxy rust preventor only consumed shall be accounted for payment purpose] 1. Two or more coats of 2 component zinc based epoxy rust preventer on reinforcement after cleaning and removing the rust from corroded reinforcement with the help of wire brush and treating it with rust remover of approved make shall be provided and applied thoroughly cleaning, washing, airblowing, brushing etc. The Measurement shall be in Liter of epoxy. The rate includes all materials, labour clearing, washing, airblowing, brushing etc. complete as per directed by Architect/ Engineer Incharge.

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Item No. 38 B SUPER STRUCTURE B1 CHIPPING OF UNSOUND / WEAK CONCRETE MATERIAL Removing weak, loose or carbonated concrete over an area from its surface with pneumatically operated or power driven tools / hand tools by chiseling, chipping etc. including cost of scaffolding, T&P complete. 1. For Chipping of unsound / week concrete material, remove weak, loose or carbonated concrete over an area from its surface with pneumatically operated or power driven tools / hand tools by chiseling, chipping etc. The Measurement shall be Sq.mt basis of Chipping of concrete. Rate includes scaffolding, T&P complete as directed by Engineer in charge.

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Item No. 39 B2 CLEANING REINFORCEMENT OF TOTAL RUST INCLUDING FROM BEHIND REINFORCEMENT. Cleaning of reinforcement of total rust by approved rust remover including cost of material and application including cost of scaffolding , T&P complete. 1. 2. 3. Cleaning Reinforcement of Total Rust by approved rust remover shall be done as per direction of Engineer in charge. The Measurement shall be in Rmt. basis of Clearning reinforcement. Rate includes scaffolding, T&P complete as directed by Engineer in charge.

Item No. 40 B4 CRACK/HONEY COMB AREA REPAIR BY PROVIDING DRILLING AND INSERTING NIPPLES ALONG CRACK LINES ( FOR CRACKS IN CONCRETE) Cutting `V' groove, drilling 14 mm dia and 100 to 150 mm deep holes @ 500 mm C/C, fixing of PVC nipples by epoxy putty and seal the remaining portion of crack by epoxy putty inclusive of cost of scaffolding, T&P etc. complete. 1. Cutting `V' groove, drilling 14 mm dia and 100 to 150 mm deep holes @ 500 mm C/C, fixing of PVC nipples by epoxy putty and seal the remaining portion of crack by epoxy putty shall be provided as per direction of Engineer in charge. The Measurement shall be in Rmt. basis. Rate includes labour, material, scaffolding, T&P complete as directed by Engineer in charge.

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Item No. 41 B5 SEALING OF CRACKS BY INJECTION OF APPROVED GROUT ( FOR CRACKS IN CONCRETE) injecting low viscous epoxy grout in the ports with pressure up to 2 kg/cm2 in to the cracks by suitable grout pump. Grouting process should be continued till nipple refuses to accept further grout or grout material flows out from adjacent neeple.Rate of the item includes the cost of materials, labour, scaffolding, T&P etc. 1. For Sealing of Cracks By Injection of Approved Grout, injecting low viscous epoxy grout in the ports with pressure up to 2 kg/cm2 in to the cracks by suitable grout pump shall be done as per direction of Engineer in charge. Grouting process should be continued till nipple refuses to accept further grout or grout material flows out from adjacent neeple. The Measurement shall be in Kg. basis of epoxy grout. Rate includes the cost of materials, labour, scaffolding, T&P etc as per direction of Engineer in charge.

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Item No. 42 B6 ANTI COROSIVE COATING FOR REINFORCEMENT Providing and applying epoxy based two pack zinc rich primer on new and old reinforcement by brush / spray. Rate of the item includes full depth chiseling and removal of concrete all round reinforcement bars. (numbers of reinforcing bars shall be measured in separate groups in dia of bars length into perimeter will gives sq. meter area of Anti corosive coating, and cost of material labour scafolding, T&P etc. 1. Epoxy based two pack zinc rich primer on new and old reinforcement by brush / spray for Anti Corrosive Coating for Reinforcement shall be provided and applied as per direction of Engineer in charge. The Measurement shall be in Sq.mt basis of area of Anti Corrosive Coating. Rate includes the cost of materials, labour, full depth chiseling and removal of concrete all round reinforcement bars. (numbers of reinforcing bars shall be measured in separate groups in dia of bars length into perimeter will gives sq. meter area of Anti corosive coating, and cost of material labour scafolding, T&P etc. as per instruction of Engineer in charge.

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Item No. 43 BONDING COATS FOR HARDENED CONCRETE WITH REPAIR CONCRETE/SHOTCRETE/CEMENT MORTAR Providing and applying epoxy latex bond coat on the surface of concrete just before the application of the repair treatment. Rate of the item includes the cost of materials, labour, scaffolding, T&P etc." 1. 2. 3. Epoxy latex bond coat on the surface of concrete just before the application of the repair treatment shall be provided and applied as per direction of Engineer in charge. The Measurement shall be in Sq.mt area of Bonding Coats for Hardened Concrete with Repair Concrete/ Shortcrete/Cement Mortar. Rate includes the cost of materials, labour, scaffolding, T&P etc. as per instruction of Engineer in charge.

Item No. 44 B8 CEMENT BASED POLYNER MODIFIED MORTAR APPLICATION (FOR REPAIR OF CONCRETE SPALLING UP TO THICKNESS OF 50 mm. & AREA OF REPAIR PATCH < 2.0 sqm) providing and applying polymer modified mortar to the prepared surface of concrete with CM 1:3 & addition of the polymer at the rate of 10 % by weight of cement. Application of the polymer modified mortar shall be in layers not more than 15 mm and for total thickness of the repair section shall be up to 50 mm. Rate of the item includes the cost of materials, labour, scaffolding, T&P etc. 1. Polyner modified mortar application (for repair of concrete spalling up to thickness of 50 mm. & area of repair patch < 2.0 sqm) providing and applying polymer modified mortar to the prepared surface of concrete with CM 1:3 & addition of the polymer at the rate of 10 % by weight of cement shall be provided and applied to the prepared surface as per direction of Engineer in charge.

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Application of the polymer modified mortar shall be in layers not more than 15 mm and for total thickness of the repair section shall be up to 50 mm. The Measurement shall be in Sq.mt area of Cement Based Polyner Modified Mortar Application. Rate includes the cost of materials, labour, scaffolding, T&P etc. as per instruction of Engineer in charge.

Item No. 45 B9 PROTECTIVE COATING Providing and applying protective painting to entire concrete surfaces. The protective painting shall comprise penetrating saline / siloxane primer and a single component Aliphatic acrylate, coating in two coats giving DFT of 150 microns . The painting shall be done at locations as directed by Engr.-in-charge. The rate is inclusive of cleaning of surface, removal of scales or any other deposition by using wire brush, or any other suitable means to make surface suitable for application of paint as recommended by manufacturer and as per specifications. 1. The protective painting shall comprise penetrating saline / siloxane primer and a single component Aliphatic acrylate, coating in two coats giving DFT of 150 microns to entire concrete surface as per direction of Engineer in charge. The Measurement shall be in Sq.mt area of Protective coating The rate is inclusive of cleaning of surface, removal of scales or any other deposition by using wire brush, or any other suitable means to make surface suitable for application of paint as recommended by manufacturer and as per specifications.

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Item No. 46 B-10 CEMENT BASED POLYNER MODIFIED MORTAR APPLICATION (FOR RESURFACING OF EXPOSED C.C. DECK SOFFITS. GIRDERS SIDES AND SOFFITS, KERB SIDES ) providing and applying polymer modified mortar to the prepared surface of concrete with CM 1:3 & addition of the polymer at the rate of 10 % by weight of cement. Application of the polymer modified mortar shall be in layers not more than 15 mm and for total thickness of the repair section shall be up to 15 mm. Rate of the item includes the cost of materials, labour, scaffolding, T&P etc. 1. The polymer modified mortar to the prepared surface of concrete with CM 1:3 & addition of the polymer at the rate of 10 % by weight of cement shall be provided and applied for resurfacing of exposed c.c. Deck soffits. Girders sides and soffits, kerb sides as per direction of Engineer in charge. Application of the polymer modified mortar shall be in layers not more than 15 mm and for total thickness of the repair section shall be up to 15 mm. The Measurement shall be in Sq.mt area of exposed surface of concrete. The Rate includes the cost of materials, labour, scaffolding, T&P etc. as per instruction of Engineer in charge.

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