Read ADDENDUM NO. 1 text version

ADDENDUM NO. 3 TO

West Irving Aquatic Center

Irving, Texas June 19, 2009 6/19/09 Project No: From: To: 20804 Brinkley Sargent Architects, Inc. Bidders

This Addendum forms a part of the Contract Documents and modifies the original Bidding Documents.

PROJECT MANUAL MODIFICATIONS

Item No. 1. A.

Special Instructions to Bidders ­ Attachment B-2 Add Item 8 to read: 8. Incentive If budget funds are available, the City of Irving will amend the contract to add a bonus of $20,000.00 if substantial completion is reached by April 23, 2010. April 23 is a fixed date regardless of any unforeseen circumstance. Checklist for Bidders ­ Attachment B-3 Re-issue checklist. Section 02825 ­ Metal Fencing Paragraph 2.02, A. Sizes: Modify lines 2, 3 & 5 to read:

2. Picket: 3/4" square x 16 gauge at fences, 5/8" square x 16 guage at guardrails. 3. Rail: Double wrapped U- channel 1 1/2" x 1 1/2" with 1" dim. at bottom to center picket. 5. Heights: As shown on drawings.

Item No. 2. A. Item No. 3. A.

Item No. 4. A.

Section 02900 ­ Erosion Control Pages 1 & 2: Refer to re-issued pages for revisions. Omissions are struck and additions are in italics. Section 04215 ­ Structural Brick Paragraph 2.1, A, 3: Add to read: 3. Color: "Bronzestone".

Item No. 5. A.

Page 1 of 3

West Irving Aquatic Center Addendum #3 June 19, 2009

Item No. 6. A. Item No. 7. A. Item No. 8. A. Item No. 9. A.

Section 04220 ­ Concrete Masonry Units Paragraph 2.3, D: Add, " 2. Acceptable equal: Core Foam" Section 04400 ­ Stone Issue Section. Section 06185 ­ Glue-laminated Timber Paragraph 2.01, A, 1, a: Modify to read, "... or Southern Pine 24F-V3." Section 07195 ­ Vapor Barrier Paragraph 2.2, A, 1: Add: d. Viper Vaporcheck 2 (15 mil) by Insulation Solutions. Section 09702 ­ Resinous Flooring Add Paragraph 2.02, B, as follows: "B. Approved equal: FasTop S urethane slurry system by General Polymers, subject to specifications above." Section 13150 ­ Swimming Pools Paragraph 1.03, A.4 ­ Add the following as a pre-approved bidder: Fun N Sun Pools Brett Skillman 3601 Kim Drive, Suite 101 Irving, TX 77506 Phone: 972-790-7311

Item No. 10.

A.

Item No. 11. A.

DRAWING MODIFICATIONS

Item No. 12. A. Item No. 13. A. Item No. 14. A. Item No. 15. A. Sheets C2 and C3 ­ Paving Plans Modify Pavement design legend as shown on AD3-C1. Sheet S200 ­ Pool and Deck Pad Preparation Plan Re-issue sheet. Sheet S201 ­ Detail Key Plan Re-issue sheet. Sheet S301 ­ Typical Foundation Details Detail 1: Modify pier schedule as shown on Sketch AD3-S2.

Page 2 of 3

West Irving Aquatic Center Addendum #3 June 19, 2009

Item No. 16. A. Item No. 17. A. Item No. 18. A. Item No. 19. A. B. C. Item No. 20. A. Item No. 21. A. Item No. 22. A.

Sheet S302 ­ Typical Foundation Details Re-issue sheet. Sheet S303 ­ Typical Foundation Details Detail 12: Modify as shown on Sketch AD3-S1. Sheet S304 ­ Typical Framing Details Re-issue sheet. Sheet A103 ­ Site Details Detail 5: Modify as shown on AD3-A1. Detail 12: Modify as shown on AD3-A2. Detail 17: Modify as shown on AD3-A3. Sheet A104 ­ Site Details Re-issue sheet. Revised details 3 & 4. Added details 10 & 11. Sheet A202 ­ Finish Plan, Schedule & Legend General Notes: Add item 8 to read: "All exposed wood deck to be stained and sealed." Sheet L2.2 ­ Alternate #1 Irrigation Plan Re-issued sheet due to prior printing error.

End of Addendum

Page 3 of 3

CHECKLIST FOR BIDDERS

Attachment B-3

(rev. 12/31/08)

Documents to be submitted in response to this Invitation to Bid (ITB)

BID PRICING PAGE: All lines completed BID RESPONSE: Completed Summary Response Page DUE DATE (Bid must be received & stamped in Purchasing no later than 3:00 pm on June 25, 2009) _______ BID BOND (5% of bid)

Bids failing to comply with the above will be deemed non-responsive.

The following items should be turned in with the bid. Documents must be received before award recommendation.

ONE (1) ADDITIONAL, DUPLICATE COPIES OF BID GOOD FAITH EFFORT AFFIDAVIT (Attachment F-2) ENVIRONMENTAL STEWARDSHIP (Attachment E-2) CONFLICT OF INTEREST STATEMENT (If applicable) (Attachment C-2) REFERENCES (As requested on the Summary Response Page) INSURANCE AFFIDAVIT (Attachment D-4) INDEMNIFICATION (Attachment D-6) WORKERS' COMP CERTIFICATION (Attachment D-7) BONDING REQUIREMENTS (Attachment G-3) NCLC STANDARD CONTRACT (Attachment H-6)

SECTION 02900 EROSION AND SEDIMENTATION CONTROL PART 1 - GENERAL 1.1. DESCRIPTION The work as specified in this section shall include developing a Storm Water Pollution Prevention Plan (SWPPP), posting and maintaining an information sign on the project, and all labor, tools, equipment and incidentals necessary for furnishing, installing, maintaining, and inspecting erosion and sedimentation control devices as required by a "Primary Operator" in operational control of the day to day operations of construction, as defined by the Texas Commission on Environmental Quality (TCEQ) TPDES General Permit No. TXR150000. The City of Irving shall be defined as a "Primary Operator" in the operational control of the plans and specifications for the project. Information on the TCEQ TPDES General Permit No. TXR150000 can be found at: http://www.tceq.state.tx.us/permitting/water_quality/stormwater/TXR15_AIR.html On this project, "erosion and sedimentation control devices" shall be defined as any approved control measure installed around proposed or existing inlets which are subject to interception of surface water containing sediment from soil erosion and/or sedimentation fencing used to stop construction sedimentation from being washed onto surrounding property and/or into adjacent drainage structures and/or adjacent drainage channels and/or adjacent bodies of water and/or into street right-of-ways. 1.2. MEASUREMENT AND PAYMENT Development of the SWPPP shall be measured and paid per lump sum. Any necessary amendments to the SWPPP during construction will be considered a non-pay item. "Erosion and Sedimentation Control Devices" will be measured and paid for as a lump sum item for all items used. Payment for Erosion and Sedimentation Control shall be made at the Total Price shown in the bid proposal for this item and shall include all labor, equipment and materials necessary for construction, installation, repairs or replacement, periodic removal of accumulated sediment, and removal of control devices upon completion of the project. Payment and maintenance of an information sign on the project shall be measured per each and paid at the Total Unit Price shown in the bid proposal. PART 2 - MATERIALS 2.1. Erosion and sedimentation control devices shall be constructed and maintained in accordance with the details and requirements shown on the plans. The Contractor is expected to use the most current Best Management Practices (BMP) Manual prepared by the North Central Texas Council of Governments (NCTCOG).

02900-1 12/19/2008

PART 3 - EXECUTION 3.1. GENERAL The Contractor shall provide the Engineer be provided with three copies of the SWPPP for projects that will disturb one or more acres of soil. In the SWPPP, the City of Irving shall be defined as a Secondary Operator that only has authority to employ other Operators and approve and disapprove of changes to the plans and specifications. The Contractor shall be defined as having day to day operational control of the construction activities as well as operational control of the plans and specifications. If the total ground cover disturbance is five (5) acres or greater, the SWPPP shall be sealed by a Professional Engineer currently licensed in the state of Texas. A copy of TPDES General Permit No. TXR150000 and this specification shall be included as part of the SWPPP. The Contractor shall also provide, construct and maintain all erosion and sedimentation control devices. Any erosion control devices shown in the plans are only guidelines provided by the Engineer. The Contractor has the ultimate responsibility for the effective control of erosion and sedimentation. The Contractor shall erect and maintain an information sign near the main entrance of the construction site with a copy of the appropriate Construction Site Notice and the TCEQ NOI form if applicable. If the construction project is a linear construction project (e.g. pipeline, road, etc.), the information sign must be placed in a publicly accessible location near where construction is actively underway. The information sign for these linear projects may be relocated, as necessary, along the length of the project. The information sign must be readily available for viewing by the general public, local, state, and federal authorities. The Contractor shall keep a copy of the SWPPP on the construction site at all times. The Contractor shall make inspections weekly AND after each rainfall event greater that onehalf inch (0.5") and shall promptly repair or replace damaged control devices. Accumulated silt shall be removed when it reaches a depth of six inches (6") and disposed of as appropriate for such material. The Contractor shall provide qualified personnel responsible for the inspection of the project. The City shall delegate the authority for the storm water pollution prevention inspection to the Contractor's designated representative. Erosion and sedimentation control devices shall be removed when the construction site has obtained final stabilization in accordance with TPDES General Permit No. TXR150000. Temporary controls may be necessary outside of the right-of-way at locations of material source, storage sites, or other operations contributing to erosion problems. Temporary controls associated with these areas outside of the right-of-way will not be considered a pay item. Any on-site concrete "wash out" areas must be identified on the erosion control plan and addressed in the SWPPP. In sandy soils with a PI of 20 or less, additional protective measures are to be taken by the Contractor to prevent any leaching of concrete wash out into the ground water.

02900-2 12/19/2008

04400 STONE

PART 1 1.1

GENERAL

SUMMARY A. Section Includes 1. Non-load bearing face brick for cavity wall construction, complete with required reinforcing, anchorage to structural back-up, through wall flashings. 2. Built-in loose steel angle lintels and shelf angles. 3. Form control joints. 4. Built-in items supplied by other trades. Related Sections 1. 2. Section 03300: 3. Section 04100: 4. Section 04220: 5. Section 05010: 6. Section 07600: 7. Section 07900:

B.

Cast in Place Concrete. Mortar. Concrete Unit Masonry. Miscellaneous Metals. Flashing and Sheet Metal. Sealants and Caulking.

1.2

QUALITY ASSURANCE A. Perform stone masonry work in accordance with requirements of Uniform Builidng Code, unless indicated otherwise herein. Sample Panel: Prepare sample stone panel. 1. Minimum Size: 4'0" long by 3'0" high showing proposed: a. Masonry color and texture range. b. Mortar color range and finish. c. Bonding. d. Overall workmanship and quality. e. Typical reinforcement and ties. 2. Do not start work until Architect has accepted sample panel; remove and reconstruct if necessary until approval is obtained.

B.

1.3

SUBMITTALS A. Samples 1. Minimum 6 individual stone samples showing full color, texture, and size range. 2. One of each type anchor, tie, reinforcement, joint filler and other accessories.

1.4

REFERENCE STANDARDS A. International Building Code Requirements for Masonry. 1. Building Code Requirements for Masonry Structures, ACI 530-02/ASCE 5-02/TMS 402-02. Reported by the Masonry Standards Joint Committee, 2002. 2. Manual of Standard Practice, MSP 1-01. Concrete Reinforcing Steel Institute, 2001. 3. Specification for Masonry Structures, ACI 530.1-02/ASCE 6-02/TMS 602-02. Reported by the Masonry Standards Joint Committee, 2002.

04400-1

4. 5. 6. 7. 8.

Standard Specification for Deformed and Plain Billet-Steel Bars for Concrete Reinforcement, ASTM A 615/A 615M-01b. ASTM International, Inc., 2001. Standard Specification for Low-Alloy Steel Deformed and Plain Bars for Concrete Reinforcement, ASTM A 706/A 706M-01. ASTM International, Inc., 2001 Standard Specification for Masonry Joint Reinforcement, ASTM A 951-00. ASTM International, Inc., 2000. Standard Specification for Zinc (1987) Coating (Hot-Dip) on Iron and Steel Hardware, ASTM A 153-01a. ASTM International, Inc., 2001. Structural Role of Joint Reinforcement in Concrete Masonry, TEK 12-2A, National Concrete Masonry Association, 1997.

1.5

ENVIRONMENTAL REQUIREMENTS A. Maintain materials and surrounding air temperature to minimum 50 degrees F. (10 degrees C.) and to protect masonry work completed or in progress. Conform to all other requirements stated in Division 1.

1.6

PROTECTION A. Maintain protective boards at exposed external corners which may be damaged by construction activities. Provide such protection without damaging completed work. Keep expansion joint voids clear of mortar.

B. 1.7

Mockup A. B. Provide a tape mockup of the angled edge masonry at the metal bin. Provide a 2'w x 4'h stone mockup showing the complete range of material colors, textures, etc. Erect prior to ordering materials and at least within 90 days from starting work. Failure to erect mockup in timely manner will give the Owner the right to modify material at no cost within the types called for.

PART 2 2.1

PRODUCTS

MATERIALS A. Building veneer: Lueders Texas limestone 1. Utilize a "Tuscan Blend" Leuders buff, antique, and smoke roughback, with a wide color range to match Architect's samples. Source: Mezger Enterprises Ltd., V: 254-547-8207, F: 254-547-8598 2. Face: split- faced at all exposed faces with split or chopped edges. 3. Bed depths: 3 to 5 inch unless noted otherwise. 4. Length and height: Rubble chop 4" ­ 12". 5. Coursing: Roughly coursed fieldstone and random rubble. See attached Fig. 1. Tolerances 1. Appearance: Stay within range established by mock-up sample for defects, color, and texture. 2. Defects: The stone shall be free from defects, deficiencies, and surface treatments, including coatings, that would interfere with the proper setting of the brick or significantly impair the strength or performance of the construction. The face or faces shall be free of cracks or other imperfections [not within range previously established in mock-up panel] detracting from the appearance of the designated sample when viewed from a distance of 12 feet.

B.

04400-2

3.

Deviation Review: Contractor shall review cost for time and travel of architect to review deviations from these established standards after mock- up panel has been reviewed maximum of three times; or accepted.

2.2

MASONRY, REINFORCEMENT AND ANCHORAGE A. Anchors and Ties: 1. Stone veneer walls attached to stud walls: ASTM A153 9 gauge wire ties, embedded at least 2 inches into the bed joint of the stone veneer. 2. Stone veneer walls attached to concrete or glass block walls: Refer to applicable specification sections. 3. Stone veneer walls attached to stud or block backup walls: HB SRX-Plus system, 304 SS with fasteners appropriate to the substrate.

2.3

ACCESSORIES A. Thru-wall Flashing: ASTM A167 Type 304 stainless steel, cold drawn and annealed, 26 gauge [.45mm], 8 foot lengths, drip edge hemmed approximately 3/16"; 2B to 2D finish; lap joints 3 inches minimum. Provide mortar screen at wall base as manufactured by Mortar Net, or equal. Expansion and control Joints: Backer Rod, compressible joint filler [ASTM D1056 Class RE41, DurO-Wall 2010 and 2015] and appropriate sealer of size(s) and profile(s) indicated on drawings. Mortar Net: H & B 'Mortar Net"; thickness of cavity.

B.

C.

2.4

SEALER A. Sure Klean® Weather Seal Natural Stone Treatment WB, an odorless, water-based solution of potassium methyl siliconate. developed to effectively treat a wide range of natural stone and masonry surfaces. Natural Stone Treatment WB provides long-lasting water repellency without altering the natural appearance of the substrate. Natural Stone Treatment WB is used as a surface treatment on natural stone and masonry surfaces to impart a water-repellent surface and reduce water absorption into the substrate. Unlike conventionalprevent surface staining during application. 1. Form: Liquid 2. Color: Clear, low odor 3. Specific Gravity: 1.03 4. Active Substance Content: 12.0% Alkylalkoxy silane, oligomeric alkylalkoxy siloxane and ethyl silicate 5. Solids: 4.5% 6. Flash Point: None 7. VOC: 353grams/liters 8. pH: 13 Sacrifical Graffiti Coating System: ProSoCo 'Graffiti Control' Coating. 1. Apply at all stone. 2. Install per manufacturers recommendations. 3. Contractor to provide 5 gallons of ProSoCo "Graffiti Wipe" which is used to remove coatings as needed and equal amounts of "Graffiti Control" and "Sacrificial Coating" for future applications.

B.

PART 3 3.1

EXECUTIONS

PREPARATION

04400-3

A. B. C. 3.2

Ensure items built-in by other trades for this work are properly located and sized. Establish lines, levels and coursing. Protect from disturbance. Adequately protect adjacent surfaces from damage and staining during masonry construction.

WORKMANSHIP AND INSTALLATION A. B. C. D. Place stone veneer masonry in accordance with lines and levels indicated on drawings. Fully bond external and internal corners and intersections. Buttering corners of joints, deep or excessive furrowing of mortar joints is not permitted. Do not shift or tap masonry after mortar has taken initial set. Where adjustment must be made, remove mortar and replace. Perform job site cutting to provide straight and true, unchipped edges. Mortar joints to be 3/8 inch. Miter outside corners; provide quirk miter 3/8" square profile at outside corners. Install weep holes at 48" o.c. in exterior masonry walls where thru wall flashing occurs. Form weep holes with ¼" PVC tube stock. Provide raked mortar joints with sealant at exposed horizontal locations.

E. F.

G.

H. 3.3

REINFORCEMENT AND ANCHORAGE A. Place masonry reinforcing and anchorages as follows: 1. Stone veneer walls tied to studs: 16" on center horizontally and 16" on center vertically. 2. Stone veneer walls tied to concrete unit masonry: 8" on center vertically.

3.4

FLASHINGS A. Place through wall flashings in accordance with Brick Institute of America Technical Notes 7 and 28 recommendations. Form end dams at all horizontal terminations. Extend flashings through stone veneer, turn up minimum 8 inches and seal into sheathing over stud framed back-up; at masonry extend into substrate joint minimum 1 inch, provide 1/4" hookdam; at concrete substrate saw in a 3/4 inch reglet and wedge hookdam flashing in place. Lap end joints minimum 6 inches and provide loose lock folded edge joints. Maximum length 16 ft.; maximum 8 ft. from corner.

B.

3.5

CONTROL JOINTS A. Provide control joints where indicated on drawings. Do not continue horizontal masonry reinforcing across joints.

3.6

BUILT-IN WORK A. As work progresses, build-in steel angle lintels, anchor bolts, plates and other items supplied by other trades. Build-in items plumb and true to lines and levels.

B.

04400-4

C. 3.7

Do not build-in organic materials subject to decomposition or deterioration.

CUTTING AND FITTING A. Obtain Architect's approval prior to cutting or fitting any area which is not indicated on drawings or which may impair appearance or strength of stone veneer masonry work.

3.8

CLEANING A. B. C. Remove excess mortar and smears upon completion of work. Point or replace defective mortar to match adjacent work. Clean soiled surfaces using non-acidic solution of type recommended by masonry manufacturer, which will not harm masonry or adjacent construction. Use non-metallic tools in cleaning operations.

END OF SECTION

04400-5

Fig. 1

Information

ADDENDUM NO. 1

18 pages

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