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SINGAPORE CIVIL DEFENCE FORCE FIRE SAFETY & SHELTER BUREAU

HQ Singapore Civil Defence Force 91 Ubi Ave 4 Singaore 408827 Fax : 6848 1488 Website : http//:www.scdf.gov.sg

Please quote our ref. no . in all future correspondences

Our Ref: CD/FSSB/12/01/03/02 DID : 6848 1409 FAX : 6848 1489

12 Jul 2002 Registrar, Board of Architects (BOA) Registrar, Professional Engineers Board (PEB) President, Singapore Institute of Architect (SIA) President, Institution of Engineers, Singapore (IES) President, Association of Consulting Engineers (ACES) Dear Sirs, 3rd RELEASE OF AMENDMENTS TO THE STANDARD FOR FIRE SAFETY IN RAPID TRANSIT SYSTEMS The 2nd release of amendments was issued on 14th May 2002. Since then LTA continued to receive feedback from LTA Engineering Division and consultants. Meetings were held to discuss the proposed amendments. 2. FSSB is pleased to forward you the 3rd release of amendments to the Standard for Fire Safety in Rapid Transit Systems which have been deliberated and agreed upon by members of the Review Committee of the Standard for Fire Safety in Rapid Transit Systems. Please find attached in Annex A the list of agreed amendments. The changes are highlighted as underscore to denote wording inserted (inserted wording) and strike through to denote wording deleted (deleted wording). 3. The changes in Annex A would take effect from 1 Aug 2002 for rapid transit stations, trainways and rapid transit depots. 4. Please convey the contents of this circular to members of your Institution/Association/Board. You may reproduce Annex A for distribution to your members. The circular is also available in our website: http://www.corenet.gov.sg/einfo. Yours faithfully (Transmitted via e-mail) Teo Lim Teck Secretary, FSSB Standing Committee for Commissioner Singapore Civil Defence Force

cc CEO, BCA All members of FSSB Standing Committee All members of Fire Code Review Committee President, REDAS President, IFE President, SISV CEO, HDB Group President, PSA Corp CEO, JTC CE, LTA (Attn : Mr Mohinder Singh) CE, PSB Corp (Attn : Mr Lau Keong Ong / Ms Tan Chiew Wan)

Annex A Standard for Fire Safety in Rapid Transit Systems Amendment No. 3/02 Section 2.1 - General Amended Clause 2.1.2.24 Engineering analysis is an analysis that evaluates all factors that affect the fire safety of the system. A report of the analysis indicating the proposed method(s) that will provide a level of fire safety commensurate with this Standard shall be submitted. For the case of an emergency ventilation system, the study shall include a validated simulation programme augmented as appropriate by a quantitative analysis of airflow dynamics techniques. The analysis shall include results on the no-fire (or cold) air velocities that can be measured to confirm that the system meets the requirements determined by the analysis. Section 2.2 ­ Station Means of Escape Inserted Clause 2.2.3.5 Modification of the evacuation time shall be permitted based on an engineering analysis subject to the approval of the Relevant Authority. Amended Clause 2.2.4.5 Where cable basements or underplatform services voids ducts have a headroom less than 2000 mm, (a) Fixed ladders complying with ANSI A14.3, American National Standard for Ladder - Fixed - Safety Requirements, shall be acceptable as a means of escape, and (b) Travel distance on the fixed ladder shall be measured as the vertical distance multiplied by a factor of 5. (c) Access to fixed ladder at platform level should be adjacent to but separated from the direct path of egress. (d) Underplatform services ducts shall be provided with at least two means of escape with exits or exit accesses located near the two ends of the underplatform services ducts. Travel distances in Clause 2.2.4.4 and Clause 2.2.4.7 are not applicable to underplatform services ducts, except that one way travel to exit or exit access shall not exceed 15 m. It is acceptable that exit accesses are provided in the fire-rated wall that separates the underplatform services ducts into two sections as required by Note 9 of Table 2.5A. Amended Clause 2.2.5.4 The minimum clear width of means of escape shall be as follows: --(g) (h) (i) 460 mm for turnstiles, and 900 mm for doors., and 500 mm for underplatform services ducts. Cable basements and underplatform services voids ducts

Amended Clause 2.2.5.13(k)(ii) A break-glass manual release device shall be installed 1.4 m vertically above the floor next to secured doors on the egress side and, except on the final exit door leading to the exterior of the station, on the ingress side, and

Section 2.3 ­ Station Structural Fire Precaution Amended Clause 2.3.2.4(g)(ii) Rooms housing transformer containing flammable liquid and generator rooms shall be located against an external wall. Exception: Rooms housing transformer containing flammable liquid and gGenerator rooms containing non-flammable liquids in underground stations are not required to be located against an external wall. Inserted Clause 2.3.3.6 Fire rated boards are permitted to be used for protection to structural steel beams and columns in station if the following conditions are satisfactorily fulfilled: (a) (b) (c) Material shall be non-combustible (BS476 Pt 4); and It shall have fire resistance rating at least equal to that of elements of structure required under Table 2.3.4A; and It shall meet the criteria, in terms of water absorption and bending strength performance, when subject to test of BS1230 Pt 1 (for gypsum plaster board) or ISO 1896 (for calcium silicate or cement board); and The fire rated boards shall be constructed to be in contact with the steel column. If it is unavoidable, the void space between the fire rated board and the steel column shall be adequately filled to a height of 1.2 m, measured from finished floor level, with fire protective material such as concrete, gypsum or grout to prevent any possible denting of the boards; and There shall be no services running in the space between the steel structure and fire rated boards, unless these services are encased in concrete or run in steel conduits.

(d)

(e)

Amended Clause 2.3.8.7(b)(i) (b) It shall not contain any services that are not solely serving the same exit staircase except for: (i) sprinkler pipe, dry riser pipe, hosereel pipe, fire alarm system cable in metal conduit; and

Amended Clause 2.3.8.7(c) The protecting structure shall be constructed of masonry. or drywall. If drywall construction is used, the following conditions shall be complied with: (i) (ii) Drywall shall be non-combustible; and Drywall shall have the requisite fire resistance rating at least equal to that of elements of structure; and

(iii) Drywall shall meet the criteria, in terms of impact and deflection performance, when subject to the tests of BS 5588 Pt 5 Appendix A and BS 5234 Pt 2; and (iv) Drywall shall meet the criteria, in terms of water absorption and bending strength performance, when subject to test of BS1230 Pt 1 (for gypsum plaster board) or ISO 1896 (for calcium silicate or cement board). (v) There shall have at least two independent exits.

Amended Clause 2.3.8.8(b) The protecting structure shall be constructed of masonry. or drywall. If drywall construction is used, the following conditions shall be complied with: (i) (ii) Drywall shall be non-combustible; and Drywall shall have the requisite fire resistance rating at least equal to that of elements of structure; and

(iii) Drywall shall meet the criteria, in terms of impact and deflection performance, when subject to the tests of BS 5588 Pt 5 Appendix A and BS 5234 Pt 2; and (iv) Drywall shall meet the criteria, in terms of water absorption and bending strength performance, when subject to test of BS1230 Pt 1 (for gypsum plaster board) or ISO 1896 (for calcium silicate or cement board). (v) Drywall shall meet the criteria of Cyclic Loading and Dynamic test as specified under Cl. 3.3 of Building Code of Australia Specification C 1.8.

Amended Clause 2.3.8.8(d) The protected shaft shall be vented in accordance with SS CP 2 Code of Practice for Installation, Operation and Maintenance of Electric Passenger and Goods Lifts. The vents shall be so arranged as to induce exhaust ventilation of the shaft. Where vents could not be provided because of the location of the lift shaft, fire rated ventilation duct protected by drywall complying with Clause 2.3.8.8(b) serving as ventilation of the shaft may be provided in accordance with Section 2.6.

Amended Clause 2.3.8.9(a) The protecting structure for protected shaft containing mechanical ventilation ducts serving exit staircases, exit passageways, smoke-stop, and fire-fighting lobbies which pass through one or more floors shall be constructed of masonry or drywall. Such shaft shall be completely compartmented from the rest of the shaft space containing other ducts or any other services installations. Protected shaft containing ducts serving other areas which pass through two or more floors shall be constructed of fire rated material drywall. If the protecting structure for the protected shaft is constructed of drywall, the following conditions shall be complied with: (i) (ii) (iii) (iv) Drywall shall be non-combustible; and Drywall shall have the requisite fire resistance rating at least equal to that of elements of structure; and Drywall shall meet the criteria, in terms of impact and deflection performance, when subject to the tests of BS 5588 Pt 5 Appendix A and BS 5234 Pt 2; and Drywall shall meet the criteria, in terms of water absorption and bending strength performance, when subject to test of BS1230 Pt 1 (for gypsum plaster board) or ISO 1896 (for calcium silicate or cement board).

Inserted Clause 2.3.9.2(g) Fire shutters shall not be used as security shutters. Amended Clause 2.3.10.2 The exit staircase shall be separated from other parts of the station by a masonry structure or drywall complying with Cl. 2.3.8.7(c) which shall have fire resistance for not less than the period required by Cl. 2.3.3 for Elements of Structure. Amended Clause 2.3.15.1(b) Intumescent paints shall not be allowed to be used for protection of all elements of structure to achieve the required fire resistance. Intumescent paint is allowed to be used for protection of structure steel members to achieve the required fire resistance, provided: (i) the paint shall be of a proprietary system that has been demonstrated to achieve the fire resistance performance as required in BS 476 Part 20 / 21 or its equivalent, together with the specified weathering tests as specified in the BS 8202: Part 2- 1992; (ii) they shall be used to protect structural beams only, excluding load transfer beams, if the habitable height of the station exceeds 24m; (iii) coating of intumescent paint onto structural steel, and subsequent maintenance shall conform to BS 8202: Part 2: 1992; and (iv) all requirements stipulated in Appendix H - "Notes on the use of Intumescent Paints for Protection to Structural Steel Members of Stations" shall be complied with.

Amended Table 2.3.2A Table 2.3.2A SIZE LIMITATION OF STATION AND COMPARTMENT

(1) Conpartments (2) Maximum Floor Area 192000 m2 (3) Maximum Cubical Extent 71500 m3

Compartment below pavement ground level. No compartment to comprise more than one storey (*). Compartments between average pavement ground level 1425000 m3 384000 m2 and a height of 24 m. No compartment to comprise more than 3 storeys. Compartments above a height of 24 m from average 71500 m3 192000 m2 pavement ground level. No compartment to comprise more than one storey. (*) Size limitation of compartment below pavement ground level is not applicable to the public area. Public area below pavement ground level shall comply with Cl. 2.3.2.4(e).

Section 2.4 ­ Site Planning & External Fire Fighting Provision for Station Amended Clause 2.4.2.2(b) Panels to Aaccess openings shall be posted with either a red or orange triangle of equal sides (minimum 150mm on each side), which can be upright or inverted, on the external side of the wall and with wordings "Fire Fighting Access - Do Not Obstruct" of at least 250mm height on the internal side. Inserted Clause 2.4.2.2(b) Where an external wall which faces the accessway has external openings on each storey level that meet the requirements of sub-clauses below, there is no need to designate any access opening. Amended Clause 2.4.2.2(c) Access openings shall be not less than 850 mm wide by 1000 mm high with sill height of not more than 10001100 mm and head height not less than 1800 mm above the inside floor level. Amended Clause 2.4.2.2(d) (i) On each storey of a station or compartment, other than the 1st storey and up to habitable height not exceeding 60 m, there shall be one access opening to every 620 m² of floor area or part thereof provided that there shall be at least two access openings on each storey level of the station or compartment. In a station where there are compartments or spaces of less than 620m² of floor area which are not accessible from one another, there shall be one access opening for every of such spaces. Position Number and position of access openings

(ii)

(iii i) Access openings shall be remote from each other and located along more than one side of the station. Such access openings shall be spaced at least 20m apart measured along the external wall from centre to centre of the access openings.

(ii)

For stations with an area or space that has a ceiling height greater than 10m, high level access openings for smoke venting and fire fighting purposes shall be provided and located in the external walls opening into the area or space. In any part of the station, hardstanding shall be located such as to provide direct access to access openings. Such hardstanding must be able to accommodate the entry and manoeuvring of fire engines, extended ladders, pumping appliances, turntable or/and hydraulic platforms. i) The minimum width of hardstanding shall be 6 m wide and the minimum length shall be 15 m long. Other parts of the accessway used for the passage of fire engines shall be not less than 4 m wide The accessway shall have a minimum width of 6m throughout. Such accessway must be able to accommodate the entry and manoeuvring of fire engines, extended ladders, pumping appliances, turntable and/or hydraulic platforms.

Additional openings

Amended Clause 2.4.2.4(b) (ab) Provision for hardstanding

Width of accessway

ii) Hardstanding Accessway shall be positioned so that the nearer edge shall be not less than 2 m or more than 10 m from the centre position of the access opening, measured horizontally. iii) Hardstanding Accessway shall be metalled or paved or laid with strengthened perforated slabs to withstand the loading capacity of fire appliances stationary 30 tonnes fire engine. The hardstanding required to serve station exceeding 24 m in habitable height shall be constructed to sustain the load of stationary 44 tonnes fire engine with footplates (jacks) and stabilizer loads as shown in Diagram 2.4.2.4(a)(iii). [See APPENDIX E for additional information] iv) Hardstanding Accessway shall be laid on a level platform or if on an incline, the gradient shall not exceed 1:15. Accessway may be laid on an incline not exceeding a gradient of 1:8.3. v) Dead-end hardstanding or accessway and fire engine access road shall not exceed 46m in length or if exceeding 46m, be provided with turning facilities as shown in Diagram 2.4.2.4(ab)(v).

Hardstanding position Location Hardstanding Loading Accessway

Gradients of hardstanding & accessway Turning facilities

vi) The outer radius for turning of accessway and fire engine access road shall be not less than 10.5 m and shall comply with the requirements as shown in Diagram 2.4.2.4(ab)(vi). vii) Overhead clearance of hardstanding or accessway and fire engine access road shall be at least 4.5m for passage of fire fighting appliances. viii) Public roads may can served as hardstanding accessway provided the location of such public roads are is in compliance with the requirements of distance from access openings. ix) Hardstanding Accessway and fire engine access road shall be kept clear of obstructions and other parts of the station, plants, trees or other fixtures shall not obstruct the path between the Overhead clearance Public road

Obstruction

hardstanding accessway and access openings. Inserted Clause 2.4.2.4(a)(i)-(iii) HARDSTANDING AND ACCESSWAY FOR FIRE FIGHTING APPLIANCES (a) i) Accessway shall be provided for accessibility of site to fire fighting appliances. To permit fire fighting appliances to be deployed, the accessway shall have a minimum width of 6m throughout its entire length. Access openings shall be provided along the external walls of station fronting the accessway to provide access into the station for fire fighting and rescue operations. Introduction

ii) For stations not exceeding the habitable height of 10m, accessway will not be required. However, provision of fire engine access road having minimum 4m width for pump appliances will be required to within a travel distance of 45m of every point on the projected plan area of the station. (iii) For stations exceeding the habitable height of 10m, accessway shall be located directly below the access openings to provide direct outreach to the access openings. Accessway shall be provided based on the gross floor area (including toilets, stores, circulation spaces, etc.) of the largest floor as follows: Minimum 2000m2 to 4000m2 >4000m2 to 8000m2 >8000m2 to 16000m2 >16000m2 Amended Clause 2.4.2.4(c) (bc) i) All four corners of fire engine hardstanding area accessway shall be marked. Marking of fire engine accessway and hardstanding area 1/6 perimeter (min. 15 m) ¼ perimeter ½ perimeter ¾ perimeter

island site access

ii) Marking of corners shall be in contrasting colour to the ground surfaces or finishes. iii) Fire engine accessway and hardstanding area Accessway provided on turfed area must be marked with contrasting object (preferably reflective) so that fire engine accessway and hardstanding area are also is visible at night. For fire engine accessway on turfed area, such The markings are to be at intervals not more than 3m apart and shall be provided on both sides of fire engine the accessway. iv) Sign post displaying tThe wordings 'Fire Engine Access - Keep Clear' shall be provided at the entrance of the accessway. Size of wordings shall not be less than 50mm.

Amended Clause 2.4.4.3 All hydrant mains which pass through a station shall have its full length within the station encased in masonry protected with fire resistance construction of at least the same fire resistance as the element of structure. However, within the public areas, the mains are allowed to be protected by fire resisting construction, provided the following requirements shall be are complied with: (a) The protective enclosure to the mains shall have the same fire resistance as the elements of structure of the station The hydrant mains shall be located in common circulation spaces and driveways; i.e. they shall not pass through private or confined spaces; No services (except sprinkler pipes) shall be located above or crossing over the hydrant mains; and The hydrant mains shall be located away from explosion risk areas; and The protective enclosure to the hydrant mains shall be labelled with the words "HYDRANT MAIN" of minimum 50mm height at suitable intervals. Protection of hydrant mains in stations

(b) (c) (cd)

Deleted Diagram 2.4.2.4(a)(iii) Diagram 2.4.2.4(a)(iii) 60m Aerial platform Hardstanding space (Jack/stabiliser layout)

Lateral Jack CRS 5190 Lateral Jack CRS 1950 Max. 17.34 tonnes Rear Jack

Max. 17.34 tonnes

2460 Max. 10 tonnes

2360 Stabiliser

DELETE

5890 Max. 10 tonnes 0.5m dia. or 0196 sq m foot plate

Mean rear axle

3430

Max. 15 tonnes

Max. 15 tonnes

Front Jack

Amended Diagram 2.4.2.4(b)(v) Diagram 2.4.2.4(b)(v) Turning Facilities for Pumper Appliances (24 tonnes) (Not to scale)

Turning Facilities for Aerial Appliances (30 tonnes) Applicable to stations exceeding the habitable height of 10m (Not to scale)

Amended Diagram 2.4.2.4(b)(vi)

Diagram 2.4.2.4(b)(vi) U-Turn Radii of Pumper Appliances (24 tonnes) (Not to scale)

U-Turn Radii of Aerial Appliances (30 tonnes) Applicable to stations exceeding the habitable height of 10m (Not to scale)

Amended Diagram 2.4.4.1(a)

Diagram 2.4.4.1(a) Provision of Private Hydrant

Every part of a fire engine access road and/or an accessway in a private lot shall be within an unobstructed distance of 50m from a hydrant. Where a public hydrant conforming to such requirement is not available, private hydrant(s) shall be provided.

Amended Diagram 2.4.4.1(b) Diagram 2.4.4.1(b)

Provision of Private Hydrant

In situation where more than one private hydrants are required, the hydrants shall be located along the fire engine access road and/or an accessway such that every part of the access road and/or accessway is within an unobstructed distance of 50m from any hydrant.

Section 2.5 ­ Fire Fighting Systems in Stations Inserted Clause 2.5.1.3 Dry mains landing valves, hosereels and detectors where required need only cover the fans in tunnel ventilation fan rooms. Amended Clause 2.5.2.1 Fire extinguishers shall be provided within the station (including cable basements and underplatform voids), commercial spaces and plantrooms at ground level entrances. Pedestrian underground or aboveground links leading to station entrances and services ducts need not be provided with fire extinguishers. Amended Clause 2.5.3.4(a) Landing valves shall be provided such that any part within the ancillary areas (excluding underplatform voids services ducts) and the train platforms including the buffer area is within 38m from a landing valve. Landing valves shall be provided such that any part within the underplatform voids services ducts is within 68m from a landing valve at the platform level. Exception: Lift motor rooms at/near entrances. Inserted Clause 2.5.3.4(e) Each dry mains can serve more than 2 landing valves per floor provided: (a) There are at least 2 dry mains, one at each end of the station; (b) The nominal bore is 150mm with a 4-way breeching inlet; and (c) The total pressure loss at any landing valve is not more than 4 bars at 38 L/s. Amended Clause 2.5.3.7 Breeching inlets shall be appropriately numbered and labelled as shown below. The wording shall be white on a contrasting background and the background shall be red in accordance with SS364. Amended Table 2.5A

Usage (1) Transformer room (oil type)* Electric lift motor room2 Hydraulic lift motor room2 Public toilet23 Underplatform Void Services Duct 9 Non-sprinkler protected building (2) Compartmentation Door rating (2a) (2b) 42-hr 42-hr 2-hr 2-hr 2-hr 2-hr N N 2-hr 2-hr Sprinkler protected building (3) Compartmentation Door Sprinkler (3a) rating (3b) (3c) 42-hr 42-hr EX 2-hr 2-hr EX 2-hr 2-hr S N N S 2-hr 2-hr EX

* 4-hr compartmentation if flammable liquids are used. Refer to Cl. 2.3.2.4(g)(i) 1 2 23 ... 78 9 810 911 Requirement stated herein apply to store room with area exceeding 10 m2 Openings for ropes and cables shall be kept as small as practicable Wall/door separating the room and non-public area shall have at least 2-hr fire rating No detectors are required in these air shafts The underplatform services duct (UPSD) shall also be divided longitudinally into two sections by a 2-hour fire-rated wall so that the two electrical feeders carrying electrical power supply for the RTS system are physically separated No detectors are required in these air shafts The door shall also be a smoke check door

Section 2.6 ­ Station Smoke Control and Mechanical Ventilation Systems Inserted Clause 2.6.2.2(e)

Where the supply air duct serving the exit staircase has to penetrate the staircase enclosure, the portion of the duct where it traverses outside the staircase shall be enclosed in masonry construction or drywall complying with Cl. 2.3.8.7(c) of at least the same fire resistance as the elements of structure and it shall not be fitted with fire dampers. Inserted Clause 2.6.2.2(f) Where duct risers are required to be enclosed in protected shafts, the protected shafts shall be enclosed in masonry construction or drywall complying with Cl. 2.3.8.7(c). Amended Clause 2.6.2.4(a) The protected shaft shall be vented in accordance with SS CP 2 Code of Practice for Installation, Operation and Maintenance of Electric Passenger and Goods Lifts. The vents shall be so arranged as to induce exhaust ventilation of the shaft. Where vents could not be provided because of the location of the lift shaft, fire rated ventilation duct protected by drywall complying with Clause 2.3.8.8(b) serving as ventilation of the shaft may be provided instead. If the duct is not to be fire rated, fire dampers shall be provided to the duct at the wall of the lift shaft, provided such relaxation shall not apply to shaft containing fire lift. Amended Clause 2.6.4.1(a) (a) Smoke purging system shall be provided in the following areas:(i) (ii) (iii) Station Public areas Corridors of ancillary areas in basement Corridors serving only ticketing machines rooms, station control room, station master room staff offices, staff toilets and staff offices stores. Corridor between the platform ancillary area and the station trainway area. Station public areas and corridors

Except the following:

(iv)

Section 2.7 ­ Other Systems in Stations Amended Clause 2.7.1.2 Emergency Lighting for Public Areas, Corridors and Lobbies (a) (b) Emergency lighting shall be provided in public areas, all corridors and lobbies. The minimum level of illuminance, the spacing of luminaires and the maximum delay for emergency lighting required in this clause shall be the same as that for the exit lighting. Emergency lighting for public areas, corridors & lobbies

Amended Clause 2.7.1.3(b)

(b)

Notwithstanding the requirements in (a) above, emergency lighting shall be provided in the following locations: (i) Lift cars as stipulated in this Standard; (ii) Fire command centres; (iii) Generator rooms; (iv) Fire pump rooms; and (v) Accessible services ducts and cable chamders, and (vi) Areas of refuge within the station.

Emergency lighting for occupied areas

Amended Clause 2.7.1.7(d) The legends, dimensions, design and installation of the exit signs and directional signs shall comply with SS CP 19 and SS 364. Externally illuminated exit signs shall comply with Cl. 4.3.2.3 of SS CP 19. Exception: Externally illuminated exit signs in normally not occupied plantrooms need not be lighted at all times. However, during power failure, the emergency lighting in the rooms shall provide the required illumination to the signs. Amended Clause 2.7.2.1 One- and two-way emergency voice communication shall comply with requirements stipulated in SS CP25 Code of Practice for Emergency Voice Communication Systems in Buildings. Exception: Locations of remote handsets for two-way emergency voice communication system shall comply with Cl. 2.7.2.7. Amended Clause 2.7.2.2 Except for lift cars, Ppublic address (PA) system shall be provided throughout the station including all habitable rooms, basement floor areas, commercial spaces, escape staircases, all lobbies forming parts of the means of escape, main entrance lobby, corridors leading to exits, ancillary areas where people may be working, area of refuge and assembly areas in compliance with SS CP 25. Amended Clause 2.7.2.7 For underground station, two-way emergency voice communication shall be provided between the Fire Command Centre (FCC) or in the absence of which, the main alarm panel (MAP) and the following areas : (a) every fire fighting lobby; (b) fire pump room; (c) fire lift; (cd) all rooms housing smoke control equipment; (de) all lift motor rooms; and (ef) Station Control Room Passenger Service Centre (SCR PSC); and (g) air-handling control rooms if a manual on/off switch for the station's central air-conditioning system is not provided in the PSC. Section 2.8 ­ Integration and Interface for Stations

Amended Clause 2.8.2.3 One main fire alarm panel should be provided in accordance with Section 2.5.5. Where separate fire alarm systems for the different transit lines are desirable, separate fire alarm panels may be provided. These fire alarm panels shall be located in accordance with Section 2.5.5 and next to each other. Section 2.9 ­ Underground and Enclosed Trainway Inserted Clause 2.9.3.3 Signage shall be provided to assist emergency evacuation of passengers. The signs should be reflective or illuminated. Section 3.1 - Depot Inserted Clause 3.1.1(b) Hosereels and sprinklers shall not be provided in stores (e.g. thermit and volatile stores) containing materials that react explosively with water.

Amended Appendix E APPENDIX E HARDSTANDING ACCESSWAY E.1 In general, the minimum width of the hardstanding accessway shall be 6.0 m wide and the minimum length shall be 15 m long. Diagram E.1 shows the relationship between the hardstanding space accessway and parked fire engine with its stabilisers, front and rear jacks extended. Hardstanding and aAccessway shall be on a) b) c) d) Suspended slabs, or on metalled or paved ground, or ground laid with strengthened perforated slabs or approved materials Hardstanding Accessway sizes

E.2

Hardstanding and aAccessway loading

to withstand the loading requirements of fire engine. E.3 The hardstanding accessway required to serve building exceeding 24m in habitable height shall be constructed to sustain the load of a 44-tonne 30 tonnes fire engine with wheels, jacks and stabiliser loads as shown in Diagram 2.4.2.4(a)(iii). The wheel load shall be considered separately with the jack and stabiliser loads for both global and local effects. Wheel Axles load for accessway and hardstanding shall be as follows: 1st & 2nd Front Axles 37,500 kg/wheel 2 wheels Wheel load and Axles load factor

E.4

3rd & 4th Rear Axles 3,7521,000 kg/wheel 48 wheels (Refer to Diagarm E.1) E.5 In ultimate limit state (ULS) design, the partial safety factor for wheel load including impact effect shall be taken as 1.6. The wheel load shall be assumed to be uniformly distributed over a circular contact area, assuming an effective pressure of 1.1 N/mm².

APPENDIX E - continue E.65 Alternatively, jack and stabiliser loads for the hardstanding may be rationalised to the following load cases if a more comprehensive and efficient design is desired. The net vehicle load for each load case is maintained at 44 tonnes: Case 1 Front jack Rear jack Stabiliser Case 2 Front jack Rear jack Stabiliser 15,000 kg/jack Nil 7,000 kg/jack Nil 17,340 kg/jack 4,660 kg/jack Rationalised jack and stabiliser loads and load factor

Cases 3 to 6 (on the same side) One front jack 15,000 kg 17,340 kg One rear jack One stabiliser 10,000 kg (on the opposing side) One front jack 1,660 kg Or One rear jack 1,660 kg In ULS design, the partial safety factor for this rationalised jack load shall be taken as 1.40. The jack load shall be assumed to be uniformly distributed over a circular rectangular contact area of 500 mm diameter 923 cm2 for both local and global analysis. E.6 E.7 The maximum pressure on one jack, even in the worst case, will not exceed 80N/cm2. In the absence of more exact calculations, live load surcharge for accessway or hardstanding on suitable material properly consolidated may be assumed to be at least 10 kN/m². Live load surcharge

APPENDIX E - continue Diagram E.1 HARDSTANDING SPACE (WHEELS, JACK & STABILISER LAYOUT) (NOT TO SCALE)

3 AXLE (15 000 KG)

4 AXLE (15 000 KG)

1 AXLE (7 000 KG)

2 AXLE (7 000 KG)

ND

RD

TH

ST

1525

4375

1350

Extreme edge of 6 m X 15 m hardstanding

LATERAL JACK CRS

44 TONNES FIRE ENGINE

STABILISER 2360 Extreme edge of 6 m X 15 m hardstanding 5890 12 200

250

WHEEL SPACING

Note: Fire engine may be parked in reverse within hardstanding

250

640

LATERAL JACK CRS

DELETE

FRONT JACK REAR JACK FRONT 1950

5910

ACCESSWAY (WHEELS & JACKS LAYOUT)

5384mm

Wheel Spacing

Inserted Appendix H APPENDIX H NOTES ON THE USE OF INTUMESCENT PAINTS FOR PROTECTION TO STRUCTURAL STEEL MEMBERS OF STATIONS H.1 Scope

H.1.1 Intumescent paint is allowed to be used to protect the structural steel members of stations to achieve the required fire resistance . H.1.2 For stations of habitable height not more than 24m, intumescent paint is allowed to be used to protect the structural steel columns and beams. H.1.3 For stations of habitable height more than 24m, intumescent paint is allowed to be used to protect only the structural steel beams, excluding load transfer beams. H.2 Standards

H.2.1 The Intumescent paint shall be subjected to the fire resistance test as detailed in BS 476 Pt 20/21 or its equivalent. H.2.2 The Intumescent paint shall also be subjected to weathering tests as detailed in BS 8202: Pt 2: 1992. Fire test for fire resistance performance shall be conducted on the specimens after the weather tests. The fire resistance rating of the tested specimen shall not be less than 75% of the original prototype. H.2.3 The Intumescent paint shall be listed under PSB Corp's Product Listing Scheme. H.3 Plan Submission

H.3.1 The project QP shall submit a separate set of plans indicating the locations of the structural steel members that are/will be coated with intumescent paint. H.3.2 If the station exceeds 24m in habitable height, a fire safety report shall be submitted together with the plan. H.4 Signage

H.4.1 A signage depicting the following minimum information shall be fixed at a conspicuous location: a) b) c) d) Name of supplier Fire resistance rating of the intumescent paint Date of painting Expected date of re-painting.

e)

Caution note: "Caution: No other paint/coating shall be applied to the surfaces of the structural steel members protected by the intumescent paint system"

H.5

Inspection and Maintenance

H.5.1 The Fire Safety Manager, if any, shall carry out regular inspection checks to ensure that the intumescent paint coatings are not damaged or tempered with. Records of inspection shall be properly kept. H.5.2 Annual renewal of the Fire Certificate, where applicable, shall also include the inspection of the columns and beams coated with intumescent paint. The inspection shall be carried out by a QP. H.5.3 For addition/alteration works in a building where structural steel members are protected by intumescent paint, the following requirements must be complied with: a) The owner or tenant, assisted by the FSM, shall engage a QP who shall submit building plans to LTA(BCU). The building plans shall be accompanied by the QP's declaration as to whether the existing columns beams coated with intumescent paint are/will be affected. Certificate of Registered Inspector Inspection shall be required. The fire safety report shall be updated accordingly.

b) c)

H.5.4 There shall be no highly flammable/combustible materials stored within the vicinity of any structural steel members protected by intumescent paint.

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