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P:\Projects\Current Projects\SD2515 - MOE Package 4A1\C - Pre-Contract\C2 Tender Doc\01A. FINAL TENDER DOCS - SSS Updated\017a_Architectural Specs Contents (refer PDF for Specs).doc VOLUME 1 of 2
(017a) ANTI - TERMITE TREATMENT Page 1 – Page 3
(017b) ACOTEC WALL Page 4 – Page 7
(017c) BRICKWORK / BLOCKWORK AND PARTITION Page 8 – Page 14
(017d) CARPENTRY, JOINERY AND IRONMONGERY Page 15 – Page 26
(017e) CEILING Page 27 – Page 36
(017f) DOOR Page 37 – Page 39
(017g) DRYWALL PARTITION Page 40 – Page 43
(017h) EXTERNAL WORKS AND SERVICES (ANNEX 2) Page 44 – Page 46
(017i) EXTERNAL WORKS AND SERVICES (ANNEX 3) Page 47 – Page 48
(017j) EXTERNAL WORKS AND SERVICES (ANNEX 4) Page 49 – Page 51
(017k) FIRE PROTECTION Page 52 – Page 54
(017l) FIXED FURNITURE Page 55 – Page 57
(017m) FLOOR AND WALL Page 58 – Page 77
(017n) GLASS Page 78 – Page 82
(017o) IRONMONGERIES Page 83 – Page 93
(017p) LAN & SERVER ROOMS Page 94 – Page 96
(017q) LANDSCAPING WORKS Page 97 – Page 118
(017r) LOCKERS Page 119 – Page 121
(017s) METAL ROOF Page 122 – Page129
(017t) METALWORK Page 130 – Page 141
(017u) OFFICE SYSTEM FURNITURE & CHAIRS Page 142 – Page 153
(017v) OPERABLE WALLS Page 154 – Page 158
(017w) OUTDOOR FITNESS EQUIPMENT Page 159 – Page 163 (017x) PAINTING Page 164 – Page 169
(017y) SAFETY SURFACE MATERIAL (FOR OUTDOOR FITNESS AREA) Page 170 – Page 172 (017z) SANITARYWARE FITTINGS, PLUMBING,DRAINAGE AND Page 173 – Page 175
SEWERAGE WORKS
(017za) SIGNAGE Page 176 – Page 187
(017zb) LOUVRE Page 188 – Page 192
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P:\Projects\Current Projects\SD2515 - MOE Package 4A1\C - Pre-Contract\C2 Tender Doc\01A. FINAL TENDER DOCS - SSS Updated\017a_Architectural Specs Contents (refer PDF for Specs).doc VOLUME 1 of 2 (Cont’d)
(017zc) TIMBER FLOOR STRIP Page 193 – Page 195
(017zd) TOILET PARTITIONS Page 196 – Page 199
(017ze) WATERPROOFING SYSTEMS Page 200 – Page 213
SPECIFICATION FOR ANTI-TERMITE TREATMENT
1.0 GENERAL
a) All termite control measures will not cause or permit any substance or hazardous substances to be discharged into any Inland Waters, so as to be likely to cause pollution of the environment.
b) All termite control measure will last a minimum of 10 years and will not require any future post re-treatment and/or spot treatment that may require the pumping of toxic chemicals into the ground around the vicinity of the Inland Waters, where it is liable to fall, or descend or be washed or percolate into the inland water.
c) The Termite Control Specialist to confirm that there will not be any possibility of leaching of any toxic chemicals into any Inland Waters.
d) The Termite Control Specialist to propose and submit the emergency plan, if required, to deal with any accidental spillage or leaching activities of any toxic chemicals, the minimum measures that will be taken to ensure and/or prevent any leaching of toxic chemicals into the Inland Waters the minimum measures to take when leaching of toxic chemical is discovered and the procedure to stop the leach as well as to recover the toxic chemicals from the Inland Waters to the satisfaction of the Pollution Control Department of NEA, Singapore.
e) The Termite Control Specialist to fully comply with The Environmental Pollution Control Act, Chapter 94A, Section 17, (1)(2)(3)(4)(5)(6), 18 (1)(2), 19 (1)(2).
2.0 TERMITE CONTROL TREATMENT
a) All new works and existing works, if any, shall be protected from subterranean termite attack.
b) Supply and install, non-chemical, no poison, stainless steel mesh termite control system.
c) Comply with all manufacturer’s or proprietary system published typical and/or standard details included in the specifications at the appropriate slab, slab edges and slab penetrations.
3.0 STAINLESS STEEL MESH
Provide the appropriate proprietary stainless steel mesh protection at the following locations:
a) At all conduit pipes and other service penetrations, including clusters of pipes, through floor and wall slabs, and insulated services pipes. (Outside of pipe.) b) At all construction joints between walls or floor slabs, between non-continuous
c) At all the buildings’ perimeter, ensuring that the paving level is at sufficient distance below the barrier to allow for a visual inspection zone (minimum 75mm). Detail of the mesh perimeter to vary according to the type of external wall and floor finishes.
d) At all external services entering the building through conduits or casings etc, including insulated services pipes. (Inside of pipes)
e) At all substantial landscaped roof and substantial plant boxes, adjacent to living spaces.
4.0 SLAB PROTECTION
The concrete slab shall be considered a termite barrier and the following precautions shall be observed:
a) The slab shall be constructed, supervised and endorsed by a registered professional structural engineer and it fully complies with the current Building Control Authority’s requirements and Code of Practice.
b) Subsequent rendering and/or repair shall be coordinated with the System Installer.
c) No conduits, penetrations or pipes shall be installed in the slab after pouring without prior notification to the System Installer. Where such penetrations are unavoidable, they shall be protected by retrofitted stainless steel mesh collars. d) For areas incorporating exposed slab edges, with no plastering and where the
concrete paving is more than 75mm below the rebate level finish, the slab edge shall be finished straight and true.
5.0 SURFACE PREPARATION
The Main Contractor to provide an even and clean concrete surface. Protection of the installed system by plastering, screeding or other finishes shall be by others.
6.0 DIAPHRAGM WALL or CBP CONSTRUCTION
De-silt (by others) a minimum of 500mm wide, to expose base bare concrete surface, prepare and clean to receive the system.
7.0 INSTALLATION
a) All installations are to be executed by the system’s Accredited Installers who have undergone extensive training in both how to install the system as well as understanding the habits of termites and are trained in the design, placement and installation of the non-chemical, no poison, stainless steel mesh termite control system.
b) The non-chemical, no poison, stainless steel mesh termite control system shall be installed in accordance with the system’s manufacturer’s published
installation instructions and are to be protected by plastering, screed or other finishes.
c) The System will keep out termites if it is complete and not damaged. If any of the trades on the site damages or moves the mesh, clamps or parging mix, then a termite entry point could occur. The Site Supervisor should immediately contact the installer if there is damage to the System or if modifications to the design of the project are made. If any of the trades are uncertain if their work could damage any part of the barrier, then they should contact the Installer.
8.0 PROPRIETARY ITEMS
The following proprietary items are to be used in the installation of the non-chemical, no poison, stainless steel mesh termite control system:
a) Mesh: TMA 725 Ultra-Marine grade stainless steel mesh. b) Clamps: 300 series stainless steel.
c) Parging: A proprietary specialised bonding, termite resistant adhesive cement, which bonds the mesh to concrete, masonry or other termite resistant substrates. Supplied as a dry and wet parge mix package.
9.0 SUBMISSION TEST REPORTS
Stainless Steel Mesh
The stainless steel mesh will keep out all species of termites in Malaysia, Brunei and Singapore.
Parging (Portland cement/silica sand)
a) Termite resistance: Field Trial minimum 6 months b) Adhesion of Render to Parging
c) Evaluation of Parging joint used in the stainless steel termite barrier system
10.0 RATES
For the purpose of rate schedules the system will be calculated as follows: a) For perimeter installations: per meter run b) For service penetrations installations: external per item (number) c) For service penetrations installations: internal per item (number) d) For construction joints per meter run e) For full mesh application per square meters
11.0 WARRANTY
The Contractor shall provide warranty for anti-termite works for a period of five (5)
years from the date of Certificate of Substantial Completion of the Works. The
warranty is to cover the quality of material, prevention of ingress of termites and termite activities into substrate, integrity of joints, and any damage to material, not due to fair wear and tear.
SPECIFICATIONS ON ACOTEC OR APPROVED EQUIVALENT
WALL SYSTEM
1. Scope
This specification describes the performance requirements for the physical material properties, testing standards and drawings illustrate general dimension, appearance and order of size. An approved installer shall carry out the work with previous experience in other projects of this type. Such installer shall submit references and full details of their experience and supervise training in the erection and installation of Acotec or approved equivalent walls panel.
2. Work Program
Prior to work commencement; the installer shall liaise with the Main Contractor and arrange his work to suit the Main Contractor’s entire work program.
3. Documents / Drawings / Dimensions
This specification is to be read in conjunction with all relevant Architecture and Engineering drawings, Acotec or approved equivalent shop drawings and all documents issued for the project.
The dimensions in the Architecture drawings shall take precedence over all other documents. All dimensions shall be checked during setting out and any discrepancies highlighted shall be resolved before work commences.
4. Standards
The following Standards are referenced in this Specifications :-
BS 476 : Part 22 : 1987 Methods for Determination of the Fire Resistance of
Non-Load Bearing Wall Panel. Elements of Construction “Determination of The Fire Resistance of Partition”
ASTM E90-90 Standards Test Method for Laboratory Measurement of Airborne Sound Transmission Loss (Sound Transmission Class; STC) of Building Partitions.
ISO 8990 : 1994 Thermal Insulation – Determination of Steady State Thermal Transmission Properties
ASTM E72- 80 Methods for Determination of Bending Strength of Non-Load Bearing Wall Panel.
BS 5234 : Part 2 : 1992 Specification for Performance Requirements for Strength and Robustness Including Methods of Test.
Annex A Determination of Partitions Stiffness
Annex C Determination of Resistance to Damage by Impact From a Large Soft Body
Annex D Determination of Resistance to Perforation by Small Hard Body Impact Annex E Determination of Resistance to Structural Damage by Multiple Impacts From a Large Soft Body
Annex F Determination of The Effects of Door Slamming Annex G Determination of Resistance to Crowd Pressure Annex H Lightweight Anchorage Pull-Out Test
Annex J Lightweight Anchorage Pull-Down Test
Annex K Heavyweight Anchorage (Wash Basin) Eccentric Downward Loading Test
Annex L Heavyweight Anchorage (High Level Wall Cupboard) Eccentric Downward Loading Test
MS 26 : Part 2 : 1991
Section 9 Method for Determination of Water Absorption 5. Approvals
The complete installation shall comply with all applicable requirements of the building regulations of Malaysia.
All Acotec or approved equivalent walls panel shall be quality checked in the factory complete with sufficient natural curing before deliver to the site. Upon arrival at site, the Main Contractor shall inspect the said panels before installation is allowed.
6. Mock-up Unit
As and when directed by the Main Contractor, prepare the actual mock-up show unit for approval. Upon approved for surface finish and all tolerance, commence construction for the entire project. All units constructed to the site shall match the approved prototype.
7. Quality Assurance
All Acotec or approved equivalent walls panel shall be manufactured in compliance with quality system in accordance to MS ISO 9001 : 2000 Quality Management Systems requirements.
8. Material Properties
The Acotec or approved equivalent walls panel shall be dry mix hollow core concrete panel consisting of chipping, sand, cement and water.
The lightweight panel shall have the following performance criteria:- Descriptions 75mm Thick 100mm Thick Weight (kg/m2) 110 140 Dimensional accuracy (mm) ±5.0 ±5.0 Hollow Core Diameter (mm) 44 68 Compressive Strength (N/mm2) 25 25 (based on cube test)
Compressive Strength (N/mm2) 15 15 (based on section test)
Fire Rating (Hours) 1 Sound Insulation (STC) 37 46
Descriptions 75mm Thick 100mm Thick Horizontal Load Test (N/mm2) 3.5 8.5 Bending Strength (N/mm2) 2 2 Thermal Conductivity (W/mK) 0.25 0.25 Thermal Resistance (m2K/W) 0.3 0.4 Water absorption (%) 5 5 9. Workmanship
Acotec or approved equivalent walls panel shall be installed in accordance to the manufacturer’s written instructions. For new installers, the on-site training would be provided.
10. Handling, Transport and Storage
All Acotec or approved equivalent walls panel shall be sufficiently cured for 14 days prior to delivery to
site. Such panels shall be palletized in five (5) pieces per pallet. Upon arrival at site, the Main Contractor shall provide hoisting to unload and deliver the Acotec or approved equivalent walls panel to the floor and general area of the work as required. All labour and equipment required for the distribution of Acotec or approved equivalent walls panel, once delivered to the floor level of installation, shall be the responsibility of the installers.
11. Cleaning
Take care of all times to keep the walls clean. Remove excess adhesive progressively. Clean strictly in accordance to the manufacturer’s recommendation.
12. Completion
On completion clean cut all blocks, adhesive droppings, debris, etc and remove all scaffolding, make good all blemishes and leave all work in good condition and protect until handover.
SPECIFICATION FOR BRICKWORK AND BLOCKWORK
1.0 BRICKWORK 1.1 Clay Bricks
All bricks shall be hard, well burnt bricks and shall be of a standard size of 215 x 102.5 x 65 inches thick, or modular metric size of 190 x 90 x 90 mm thick or 290 x 90 x 90 mm thick, and comply with SS 103. They shall be obtained from an approved manufacturer.
Facing bricks shall have an approved texture and colour and shall have sharp, well-defined arises.
The Contractor shall allow for, when directed by the Superintending Officer (SO), to take additional samples of bricks of each type from each consignment free of charge for testing.
Bricks for fair-faced work shall be individually selected from consignments delivered to the site, with particular regard to uniformity of size and approved colour, with perfect arises, true faces where exposed and absence of minor defects.
Facing bricks, unless otherwise described, shall be the specified type obtained from an approved manufacturer.
The Engineering bricks shall comply with B.S. 3921 Class A or the relevant S.S. Code and be obtained from an approved manufacturer.
Solid Bricks without holes to be used for all walls.
All bricks shall be carefully stacked on arrival. Chipped bricks/blocks shall not be used for fair face work
1.2 Mortar
a) Cement
The cement shall be Portland Cement or other approved equivalent subject to approval of the Consultant Engineer.
b) Water
All water used for mixing concrete, mortar and grout, for cleaning out formwork and for curing to be clean and free from harmful matter in solution or suspension.
c) Sand
Sand for brickwork shall comply with B.S. 1200 or the relevant S.S. code, and shall be clean, sharp, fresh water river sand, free from clay and other impurities and shall be washed and/or screened if required by the Superintendent Officer
1.3 Mortar Mix
The mortar shall be a 1:3 mix, well mixed with an approved mortar plasticizer. The mortar shall comply with the requirements of B.S. 4887 or the relevant S.S. code and used strictly in accordance with the manufacturer's instructions.
The exact amount of sand required, where not fixed by the above, is to be varied between the limits stated according to the nature of the sand, so as to obtain adequate workability.
Mixing of all mortar is to be done either by means of a mechanical batch mixer of an approved type or by hand on a clean water-tight platform of adequate size, the materials being turned over twice in a dry state and twice while water is added. The materials for mortar are to be measured in accurate gauge boxes, which are to be completely filled with the top leveled off.
No mortar containing cement is to be used later than 30 minutes after the addition of water to the cement or after it has commenced to set, and no mortar which has commenced to set is to be knocked up for re-use.
1.4 Brick Laying
All bricks shall be soaked in water for at least half an hour immediately before being laid and all constructed brickwork must be cured with water for five days and protected from the sun's rays for two days after laying.
All bricks are to be well buttered with mortar before being laid and all joints are to be completely filled with mortar as the work proceeds. Single-frogged bricks are to be laid frog uppermost. Brickwork is to be laid to rise four courses to not more than 300mm.
Brickwork is to be carried out uniformly, no portion under construction being raised more than 900mm above another at any time. All perpend, quoins etc., are to be kept strictly perpendicular true and square, and every course is to be kept truly level.
Brickwork to all walls must be constructed of solid bricks. No perforated bricks are allowed unless otherwise permitted by the SO.
Tops of walls where work is left off shall be well wetted before work on them is resumed.
Cracked, broken or damaged bricks will not be allowed for use in the work. Overhand laying must not be used without the approval of the SO
Predetermine setting out so that full bricks occur under lintel bearings.
The Contractor shall provide proper setting out rods and set out the same all work showing opening heights, cills and lintols and shall build the various walls and piers to the thickness, widths and heights shown on the drawings.
1.5 Restrictions on Brick Laying
No brickwork is to be built off or supported on reinforced concrete beams, slabs, or concrete encased structural beams until a minimum of 7 days after formwork and props supporting the concrete have been removed. Care should be taken to avoid the stacking of bricks which may induce excessive concentrated load on the structure.
1.6 Bond
All brickwork except half brick walls shall be in English bond. Half brick walls shall be in stretcher bond. All shall be built in level courses. No four courses shall rise more than 25mm above the same laid dry. All perpend, reveals, quoins and other angles of the walls, etc. shall be built strictly true plumb and square. No broken bricks or bats shall be used except where closers are required at quoins, joints, etc. to make bond. Bats are to be used only where required for bond. No portion to exceed 900mm above adjoining parts whilst being built and all working junctions to be racked back and not toothed up.
1.7 Bonding Ties
Provide bonding ties consisting of 6mm diameter mild steel rods 450mm long, hooked both ends, one cast into concrete columns and the other built into brickwork. Tie 450mm x 50mm strips of Exmet to top of bars to form adequate brickwork bond.
1.8 Brick Reinforcement
Brick reinforcement shall be bitumen coated "Exmet" 22 gauge or other approved mesh reinforcement at every fourth course and shall be 64mm wide for 75mm and 115mm walls and 180mm wide for 200mm walls. No. 24 gauge "Hyrib" metal lathing 200mm wide or other equal and approved shall be laid vertically over joints between concrete columns and brick wall.
All half brick thick walls shall be reinforced with a layer of approve brickwork reinforcement at every fourth course .All 100 mm thick hollow block walls shall be reinforced with a layer of approved reinforcement at every course.
Mesh reinforcement shall be 62 mm wide expanded mild steel strip of 0.711 mm (22 SWG), the bottom most reinforcement being 150 mm above floor of foundation level. The reinforcement shall be lapped 150 mm at all joints and carried, through the full thickness of the end wall at comers and junctions. Where the wall bonds with thicker walls, the reinforcement shall be carried through the thicker wall.
1.9 Damp-Proof Course
All damp-proof courses shall consist of one layer of three-ply purpose made bituminous sheeting or other equal and approved products, complying with the requirements of B.S. 743 or the relevant S.S. code, laid with 150mm overlap at joints and angles on a 19mm bed of 1:3 cement mortar. A full coat of hot bitumen shall be applied over the mortar and again over the bitumen sheeting.
1.10 Damp Proof Membrane
This shall be approved heavy grade polythene sheet or other approved specified products, with all joints twice 50mm folded and taped together and laid on top of lean concrete blinding. Take all necessary precautions to ensure that the polythene sheets or other specified products are not torn or punctured, particularly during construction stage.
1.11 Fair-Faced Brickwork
All facing bricks and fair-faced brickwork shall be constructed with a uniform face internally or externally as shown in the drawings, carefully set in cement mortar, raked out joints and pointed with a neat weathered joint as work proceeds. Coloured cement pointing will be used if so specified
All areas of fair faced brickwork or facing brick shall be protected by gunny sacks, or other suitable materials from mortar droppings, rubbing, staining or other surface adhesions until such time as work is handed over as complete. No rubbing down of brickwork shall be permitted.
No faced work shall be painted or shall be given any form of surface treatment without the approval of the S.O.
1.12 Cavity Walls
The air space of cavity walls is to be kept clear of mortar droppings and other debris and all wall ties are to be wiped clean. Openings are to be left at the base of the cavity and over lintols etc. for clearing out on completion and are subsequently to be bricked up.
1.13 Openings in Walls
Opening for doors, windows, vents, etc shall be properly mapped out and left un-built until the wooden/metal frames have been fixed in position.
All timber frames shall be built in as the work proceeds and the backs of frames to include for one coat of aluminium wood primer before fixing.
All door frames, window frames, vent, frames, plates, etc are to be bedded solidly at the back in cement mortar (1:3) and pointed as described.
Provide and fix galvanised/wrought iron holdfast, of size 40 x 230 x 3mm thick and fixed at centres as required by the S.O, to all timber frames abutting walls. All holdfast shall have one end twice hooked, bent and screwed to timber frame, other end fishtailed and built into brick or concrete wall. Before building into brickwork, the holdfast shall be painted with one coat of approved anti-rust chromate primer.
1.14. Mortices, Holes, Chases
required, such cutting of openings shall be done subjects to S.O.’s approval. The bricklayer shall provide in walls the openings required by other trades and shall do all cutting and making good.
All chases, fair and raking cutting, beam filling, corbelling and cutting groove for flashings shall be formed or cut as required.
All ducts, recesses for service lines and the like shall be formed to the correct dimensions.
Forming chases in brick wall for concealing pipes, conduits etc, shall be of the smallest depth necessary for the purpose and excessive cutting shall be avoided at all times.
Chases shall be formed by machine cutting without cracking or splitting the brick wall or causing any serious damage. The Contractor shall rectify all damage caused at his own expense and time and in the manner as directed by the S.O.
1.15 Cleaning On Completion
On completion, make good all damaged joints on exposed faces of brickwork.
Clean all exposed faces of brickwork with a solution of diluted hydro-chloric acid and clean water and afterwards with clean water only to remove surplus mortar, stains and dirt, etc.
1.16 Key For Plaster
Except where specified to be fairface, all faces of brickwork are to be left rough and the joints raked out to a depth of 13mm whilst the mortar is green to form adequate key for plaster.
1.17 Sundry Items
Leave or form all holes, mortices, chases etc., cut and fit brickwork around steelwork and concrete, build in ends of cills, joist etc., and carry out all other labours shown on the drawings or as necessary for the execution of the work.
All bolts, brackets, lugs etc. are to be grouted or pinned in solidly with cement mortar, and holes and chases for pipes, conduits, etc are to be packed solidly with cement mortar or fine concrete.
2.0 AERATED CONCRETE BLOCKS
Aerated concrete blocks shall be from approved manufacture complying with B.S. 2028 Type B 1364:1968 or the relevant S.S. code and shall be of the shape and sizes as shown on the drawings. The minimum Compressive Strength shall be 7 N/mm2. The hollow blocks shall be manufactured in ordinary Portland cement, dry mixed in the ratio of 1 part cement to 3 parts of sand and pressure-pressed in metal moulds. All block shall then be cured for at least two weeks and shall not be used until at least two
months from date of manufacture had lapsed. All defective, chipped or under strength blocks shall not be used and shall be removed from site immediately. All blocks shall be finished smooth, ready to be painted.
Build concrete hollow block walls at locations indicated, bedded and pointed in cement and sand mortar (1:3).
3.0 GLASS BLOCKWALLS
Glass block walls shall be as specified in the drawings. The glass block shall be first quality glass blocks, or approved equivalent, and laid in accordance to the manufacturer's instructions, in particular to the provision of expansion joints, sealants, pointings, fixing accessories, etc and to the approval of the S.O.
Samples shall be submitted to the S.O. for selection and approval. All accessories must be accompanied with the submission including special shape and corner pieces for 90 degree angles.
The glass blocks shall comply with the following properties: Country of manufacture : Italy
Sizes : 240mm x 240mm 80mm, 190mm x 190mm x 80mm, half size blocks, slip proof, cross ribbed, squared, satin,
clear, smooth and wavy. Specific Weight : 2,5000kg/m3
Hardness (Mohs Scale) : 6.0
Specific Heat : 64.5 J/kg 0K Index of Refraction : 1.5
Light Transmission : >75% (clear)
Linear expansion : 0.000007 cm/cm 0K Modulus of Elasticity : 760,000kg/cm2 Compressive Strength : 7N/mm2 Flexural Strength : 40N/mm2 Impact Strength : 2KN Poisson’s Ratio : 0.2
Heat Transmittance : DIN 52619 : ASTM C236
Fire Resistance : DIN 4102 part 5
4.0 WATER TIGHTNESS TEST TO EXTERNAL FACING BRICKWALLS
4.1 General
The Contractor shall carry out water test to the external facing brick walls to test the water tightness of external wall construction. The external facing brick walls directly facing the exterior but exclude walls along balcony parapet walls at the staircases.
The water used for filling up of reinforced concrete water tank before the sterilization shall be used for the water tightness test to the external facing brick walls. The Contractor shall only be allowed to sterilize the water tank after completion of the water tightness test to the external facing brick walls. Power Supply's potable water shall not be used for the water tightness test to external facing brick walls. Power Supply's potable water shall not be used for the water tightness to external facing brick walls except for re-test cases. 4.3 Method of Testing
10% of the façade of external brick wall or area as directed by the S.O. or his Representative shall be tested for water tightness.
Provide the following information to the S.O. or his Representative for approval at least 2 months before the water test to be carried out:
a) The entire equipment set up to conduct the water test b) Procedure of the water
c) Pump capacity to deliver the required flow rate d) The method to suspend the nozzle
The nozzle of the water jet shall be fixed at a distance of 1800mm to 2000mm away from the surface of the external wall and incline at 30o to the external wall. The capacity of water delivered shall be 300 liters per hour and the duration of testing is 2 hours.
The nozzle shall be placed in such a way that it covers the entire wall panel. Ensure that the drawing of water from the water tank for testing does not contaminate the water tank.
The wall panel shall be considered to have passed the test if no dampness or seepage appears at the internal surface of the wall panel or the adjacent areas during the spraying and within half hour after the completion of spraying. Portable Field Water-Tightness Testing Device developed by BCA in
collaboration with Jetsis International is recommended to be used for the for the aforesaid water tightness testing
4.4 Failure of the Testing
In the event of any failure in the first water tightness test, the Trade Contractor shall rectify the dampness and/or leakage and carry out a second water tightness test. Another 10% façade of external brick wall or additional area as directed by the S.O. or his Representative for the second water tightness test.
In the event of the second water tightness test fails, the Contractor shall carry out water tightness test to all external facing brick wall panels for the whole block. The Contractor shall rectify all leakages and repeat the test until all the external facing brick walls have passed the test. The costs and expenses of all the water tightness tests, retests and rectification work shall be borne by the Contractor. In addition, the S.O or his Representative reserves the right to reject any external facing brick wall that performs unsatisfactorily during the water tightness tests.
SPECIFICATION FOR CARPENTRY AND JOINERY
1.0 GENERALLY
1.1. All timber shall be the best of its kind, well seasoned, free from shakes, waney edges, large or unsound knots, spongy or brittle heart, and any other defects.
1.2. All timber shall be graded in accordance with the latest approved rule of the Malaysian Grading Rules for Sawn Hardwood Timber and the Contractor shall obtain and produce to the S.O a Grading Certificate in accordance with the rule from the Grading Authority. The Contractor shall pay all grading fees and any other charges in connection therewith. The Contractor shall make all necessary arrangements for grading to be carried out. Such fees and charges shall be included in the rates for carpentry and joinery.
1.3. All graded timber shall be marked with the grade mark, the standard name of the timber and the registered number of the Timber Grader. No ungraded timber shall be brought onto the site or into the Contractor's joinery workshop. The SO may order the removal of any such ungraded timber from the site.
1.4. Before any payment is made to the Contractor in respect of timber used in the works, the Grading Certificate covering the said timber must be produced to the SO.
1.5. The grade of timber used in the works shall not be lower than "Standard & Better Grade M.G.R.". This grade allows a small number of defects in the timber, including a limited amount of sapwood. All visible surfaces of timber when fixed in position shall be entirely free from sapwood, knots, and any other defects.
1.6. After the Contractor has taken delivery of the graded and seasoned timber, it shall be stored under cover and shall be kept perfectly dry before use. The SO may inspect the timber at any time to ensure that it is being stored under proper conditions and may reject any timber improperly stored.
2.0 UNWROT AND WROT TIMBERS
2.1 Unwrot timbers shall be left with a sawn face to hold the full dimensions specified or shown on the drawings. In wrot timbers, an allowance of 2mm for each wrought face shall be allowed for "nominal" sizes specified or shown on the drawings.
3.0 TIMBER FOR CARPENTRY AND JOINERY
3.1 All timber for carpentry works shall be Kapoh, keruning. Merbau and any other timber within the same strength group as classified in SS CP1 while all timber for joinery works and fittings shall be in Kapoh unless otherwise stated.
3.2 The type and grade of timbers shall be as stated in the Drawing, or the Scope of Works.
3.3 Unless otherwise stated, the use of timber shall comply with the Code of Practice on "Use of Timber in Building" - CP1.
3.4 All timber shall also be pressure impregnated with fire retardant chemical or compound approved by FSB. Certificate of Application shall be submitted to the SO. All treatment shall be strictly to manufacturer's specification to achieve the requirements laid down by FSB.
3.5 The Contractor to ensure that both treatments is compatible and do not affect performance of timber.
3.6 All timber shall also be pressure treated with an approved wood preservative by pressure impregnation method in accordance with the relevant B.S. or S.S. codes. The Contractor shall submit to the SO, certificates of treatment for each consignment of timber.
3.7 If applicable, and where specified that any existing timber joists that are in good condition and certified sound by the Engineer shall be retained, the existing paint work shall be sand off and the timber treated with approved fire retarder and wood preservative.
3.8 Pressure Treatment
3.8.1 Timbers where described as "pressure treated" shall be impregnated under vacuum and pressure with an approved proprietary wood preservative to comply with the relevant B.S. or S.S. codes and be treated in accordance with the relevant B.S. or S.S. codes and Code of Practice.
3.8.2 The treatment shall be carried out by an approved specialist firm and in a manner approved by the SO and in strict compliance with the manufacturer's specification to achieve the relevant B.S. or S.S. codes.
3.8.3 The Contractor shall produce a certificate from the supplier that the timber has been pressure treated in accordance with the manufacturer's instructions and showing the quantities and sizes of timber treated and the nett retention of dry salt obtained. The dry salt retention in all timber is subject to the approval of the SO.
3.8.4 Ends of pressure treated timber which are cut or bored shall also be treated and sealed in accordance with the manufacturer's instructions.
3.9 Moisture Content
3.9.1 All timber shall be properly seasoned and dried until the moisture content of timber complies to Table 1.0 - Moisture Content Of Timber For Various Positions In Buildings (Source : CP7 1978 Code Of Practice For The Structural Use Of Timber).
3.9.2 The timber shall be stored under a covered shed and properly stacked to enable air to circulate freely around all faces. The Contractor shall determine the moisture content either by a moisture meter or by the standard weighing method.
3.9.3 The SO shall reject any joinery timbers having a moisture content other than the acceptable limits as specified. The SO reserves the right to submit any timber to the Singapore Institute of Standards & Industrial Research for test and report.
3.9.4 The Contractor shall replace at his own expense any timbers which shrink or are damaged in finished work caused through the use of imperfectly seasoned timber.
3.9.5 The Contractor is responsible for the accuracy of all dimensions and shall carry out site checks to determine the actual dimension of such works, where necessary. All inaccuracy will have to be corrected at the Contractor's expense.
3.9.6 Setting out drawings showing the positions and locations of all furniture in relation to the floor services shall be submitted to the SO prior to the commencement of any works.
3.9.7 Mock-ups, samples of materials, finishes, colors and prototypes of each item of furniture required to be provided or submitted, when directed by the SO, shall be approved by the SO in writing prior to the commencement of such works. The Contractor shall allow for the provision of mock-ups and sample submissions within his tender and the contract period. Approved prototypes may be incorporated into the works.
3.9.8 All timber shall be selected from the best grade suitable for its purpose and shall be sound, well seasoned and free from sapwood or other defects in so far as they are likely to have a deleterious effect on the durability, structural soundness or appearance of the work.
3.9.9 All timber shall be delivered to the site as soon as possible after commencement of works and shall be open-stacked on stickers under cover so as to ensure maximum seasoning and to inhibit warping, etc.
3.9.10 Unless otherwise specified or scheduled, the following timber or equivalent alternative nominated or approved by the Client shall be used, all subject to approved samples.
3.9.11 Exposed timber surfaces shall of the following finishes: a) in selected veneer ply and oak/touched edging to all areas. b) in laminate finish of approved colors.
3.9.12 Generally framing timber shall be of wrot kapur or kempas. The Contractor shall submit shop drawings showing proposed rafter and ply decking layout to SO for approval.
3.9.13 Timber shall be in single lengths where possible. Where joining is unavoidable, these joints shall be staggered and scarfed over supports.
3.9.14 The dimensions of all sawn or wrot timbers are finished sizes unless otherwise stated.
3.10 Storage
All timber shall be properly stacked to enable air to circulate freely around all faces and stored under a properly constructed and roofed enclosure.
3.11 Framing Timber
All framing timber shall be correctly seasoned timber to the requirements of the BS Standard 1186 before fabrication.
3.12.1 All timber used shall be of the best quality, perfectly dry and well seasoned, sawn die square, free from sap, shakes, weary edges, knots and all other defects.
3.12.2 All timber shall be pressure impregnated by treating with wood preservative by the full cell vacuum/pressure impregnation process. All timbers to be treated shall be machined to the final dimensions in which they shall be used before impregnation. Where subsequent sundry labour such as cross-cutting, boring, etc. is unavoidable, all exposed surfaces shall be liberally swabbed with an approved wood preservative.
3.12.3 All timber shall be in properly morticed, tendoned, shouldered, wedged, pinned, bradded, etc.
3.12.4 All visible nails in joinery work shall be punched in and stopped. Screws shall comply with SS 186:1978.
4.0 NAILS, BOLTS, ETC.
4.1 Nails, screws, bolts, nuts and other fastenings etc shall comply with the relevant B.S. or S.S. codes.
4.2 All nails, screws, bolts and other fastenings are to be of a suitable type and size and in sufficient number. Where necessary to avoid splitting, holes for nails are to be pre-bored to a diameter not exceeding four-fifths that of the nail. Holes for bolts are to be bored from both surfaces of the timber, and are to be of a diameter equal to 11/16 times that of the bolt. Washers are to be used under all nuts and bolt heads. Nuts are to be brought up tight but not so as to crush the timber.
4.3 Timber connectors shall be as specified and teeth or rings are to fully embedded in the timber.
4.4 Where fixing with cups and screws is specified, the cups are to brass turned or heavy pressed pattern.
4.5 Screws heads shall be countersunk and filled or pelleted as specified. Pallets shall be cut from matching timber and fixed with grain running in the same directions as that of the timber.
4.6 Wrot faces are to be sanded to a perfectly smooth surfaces with slightly rounded exposed arises before receiving decorative finishes. Timber for joinery with natural finish, varnished or polished finish is to be selected to match grain and colour and be free of other defects.
4.7 Plugging
Plugging for fixing carpentry or joinery to brickwork or concrete shall be wood plugs cut with a slightly twisted taper to fit tightly into the joint or mortice into which they are driven, or dove-tailed where cast in-situ or built in. Wood plugs are to be treated with wood preservative. Alternatively, for screwed fixings, "Rawlplugs" or other approved similar plugs may be used.
4.8 Glue
Glue is to be approved resin-based or synthetic rein-based adhesive of appropriate type, and is to be used in accordance with the manufacturer's instructions.
4.9 Fixing And Fasteners
4.9.1 Timbers shall be fixed to brickwall or reinforced concrete structure by means of "Rawlplugs" hardwood plugs and screws, ramsets or other approved fixing devices at such centres to provide secure fixing.
4.9.2 The Contractor shall obtain the SO's permission for the usage of "Ramset" fixing apparatus or other similar cartridge power fixing gun and steel fasteners. 4.9.3 Timber which are required to be secret-fixed shall be finished with
countersunk-screwed and pelleted.
4.9.4 Brass screws shall be used for all fixings and each shall be of the size necessary for proper fixing.
4.10 Power Fixing Timber To Concrete
4.10.1 Fixing of timber to concrete with power driven fasteners shall be carried out by means of an approved automatic cartridge operated hand tool used strictly in accordance with the manufacturer's instructions.
4.10.2 The Contractor shall obtain, if required, all necessary licenses required for the use of power driven fasteners and shall pay all fees in connection.
5.0 WORKMANSHIP 5.1 General
5.1.1 All carpentry works shall be accurately set out in strict accordance with the drawings, framed together and securely fixed.
5.1.2 Joints in carpentry timber are to be accurately formed and of appropriate type to transmit the loading and resist the stresses to which they are subject. Abutting surfaces in timber exposed to the weather are to be thickly coated with priming paint immediately before assembly, unless required to be glued. 5.1.3 Joints in plates, heads and cills of partitions and similar members are to be
halved 150mm long or, at angles, for the width of the member. Joints in purlins, ridges and similar members are to be scarfed for a length equal to twice the depth of the member, and tightly wedged. Rafters or joints trimmed around openings are to be correctly framed with tusk-tenon joints and dove-tailed housings. Studs in partitions are to be stud-tenoned at head and cill. All bolts, nails, screws, spikes plugs, bolts, etc shall be provided by the Contractor as necessary and as directed by the SO.
5.1.4 Every post, beam, joist, rafters, stud, strut, tie and similar members is to extend in one piece between its supports or fixings unless otherwise specified or approved in writing, in which case it is to be adequately jointed in an approved manner.
5.1.5 Plates, heads and cills of partitions and similar members are to be in one piece between points of change of direction provided that halved joints may be used to avoid the use of timbers exceeding 6.0m long.
5.2 Notching, Holes, etc
5.2.1 Where joists, rafters, etc are notched over supports the depth of the notch is not to exceed two-fifths of the depth of the member.
5.2.2 Holes in joists etc., for pipes are to be as near to the neutral axis as possible and are not to exceed one- quarter of the depth of the member.
5.3 Bolts Connections
Bolts connecting timbers loaded parallel to the grain shall be spaced a minimum of eight times the diameter of the bolt from the end of the timber. Bolts connecting timbers loaded perpendicular to the grain shall be spaced a minimum of four times the diameter of the bolt from the load edge.
No bolt shall be closer than twice the diameter of the bolt to any edge of timber. Minimum bolt spacing shall be two and a half times the diameter of the bolt.
5.4 Joinery Work
5.4.1 One sample of each type of joinery work shall be accurately set out to full size with all joints, ironwork and other works connected therewith and submitted to the Architect for approval prior to commencement of respective works.
5.4.2 All work shall be properly morticed, tenoned, shouldered, wedged, pinned, nailed etc. as directed and to the satisfaction of the SO. The above works shall be properly glued up with quality approved glue.
5.4.3 All exposed surfaces of joinery work shall be wrought unless otherwise specified. All sizes stated are nominal sizes unless otherwise stated as finished sizes. Where there are no full size details, exposed corners of frames, glazing bars and other finishes shall be rounded.
5.4.4 All visible nails in joinery work shall be punched in and stopped.
5.4.5 Where glued joinery work is likely to come into contact with moisture, the glue shall be of an approved waterproof type.
5.5 Fixing Frames
5.5.1 Fixing door and window frames into concrete structure - Door and window frames shall fit neatly into the openings. All crevices between frames and walls, beams or other structures shall be filled up with cement mortar (1:1).
Heads of window and door frames which abut concrete structure shall be fixed with concrete nails and ramset, and the feet of door frames fixed according to details.
5.5.2 Fixing door and window frames to brickwork - Timber door and window frames not abutting reinforced concrete work shall be secured to walls with six and four fishtailed holdfasts per frames respectively. The holdfast shall be galvanised mild steel, one end turned up and twice countersunk, drilled and screwed to frame and other end tailed and built into the joints of wall.
5.5.3 All timber and frames etc. abutting concrete, brick or plaster shall be properly brushed with two coats of approved wood preservative to the relevant B.S or S.S. codes before fixing.
6.0 SISIR / PSB LABELLED FIRE DOORS AND FRAMES
6.1 Fire resistance doors and frames of ratings as specified in the drawing must be obtained from a manufacturer approved by FSB or SISIR/PSB and installed strictly in accordance with the manufacturer's instructions. The fire resistance rating of the doors delivered to site shall be clearly marked on their surfaces.
The Contractor shall produce certificates from the Inspectorate of Fire Services, SISIR and manufacturer's test certificates to substantiate the fire resistance rating of door delivered. If the approval of the Inspectorate of Fire Services of any door is not substantiated to the satisfaction of the SO, it shall be removed from the site and replaced at the Contractor's own expense.
6.2 The Contractor shall be deemed to have included in his rates for everything necessary, whether specified herein or otherwise, to provide SISIR/PSB labelled fire resistance doors and frames complying with the requirements of the Inspectorate of Fire Services on fire doors of 1/2 hour, 1 hour and 2 hour ratings respectively.
6.3 For timber fire doors, the doors shall be finished with 1.3mm thick Class ‘0’ plastic laminate on both sides. The lipping for woodgrain patterned plastic laminate shall be finished with matching timber lipping of similar woodgrain pattern while the lipping for solid coloured/patterned plastic laminate shall be finished with plastic laminate of 1.5mm thick solid colour core. The vision panel shall be 6mm thic k clear fire-rated glass panel. Mere compliance with the specification shall not relieve the contractor from his liabilities should the door fail to achieve the required fire ratings.
6.4 Unless otherwise specified or indicated in the Door Schedule and Drawings, fire doors of above one hour fire ratings shall be constructed of 1.22m (18g) thick zinc coated steel sheet press formed to provide a fully flush, double skin door shell with lock seam joints at stile edges. The internal construction of the door shall comprise minimum 1.6mm thick stiles, top and bottom rails and reinforced with minimum four number intermediate 16g channels and doors shall be infilled with fire-resisting materials. Mere compliance with this specification shall not relieve the contractor from his liabilities should the doors’ construction fail to achieve the mentioned fire ratings.
7.0 FINISHES
Wrot faces are to be sanded to a perfectly smooth surfaces with slightly rounded exposed arises before receiving decorative finishes. Timber for joinery with natural
finish, varnished or polished finish is to be selected to match grain and colour and be void of visible defects.
8.0 BUILT-IN FITTINGS (REFER ALSO TO SPECIFICATION FOR FIXED FURNITURE)
8.1 The built-in fittings are to be executed all in accordance with the drawings and to the approval of the SO.
8.2 Where the joinery works are specified or shown to be fixed-in, it is the responsibility of the Contractor to ensure that the necessary fittings are incorporated in the carcass, or alternatively, the Contractor may construct such ground works as are required to provide a suitable base and fixing for the joinery works.
8.3 No work on these is to commence until the Contractor has taken measurement from the site.
8.4 The Contractor is to secure fixed-in joinery works so that they are plumb and true to the shapes and members are to the full sizes shown on working drawings and details. 8.5 Vertical junctions shall be solidly bedded in mortar, wedged or otherwise secured as may be specified, or as is most appropriate in the circumstances, but a clearance is to be maintained in all overhead junctions so that settlement in the building carcass may take place without stressing or otherwise loading the joinery works.
9.0 PLYWOOD
9.1 Plywood shall be of selected quality and comply with the relevant B.S. or S.S codes and be of approved manufacture and termite proof. Plywood used for all doors, fitments, ceiling or panelling and external uses shall be of Weather and boil proof quality (type WBP) and shall be veneer or paint grade quality as indicated. Plywood for other uses shall be of Boil Resistant quality (type BR). Wherever used, plywood shall be finished with mouldings or beadings and no sawn plywood sections along either grain shall be exposed. All plywood shall be treated with wood preservative as specified.
9.2 Plywood shall be one of the following specified grades referred to in the relevant B.S. or S.S codes which, in the opinion of the SO, is appropriate for the work as follows:- 9.2.1 Grade 1 - For use in the natural state. The veneer shall be free from knots,
worm and beetle holes, splints, glue stains or other defects.
9.2.2 Grade 2 - For use where subsequent painting or similar treatment is required. The veneer on the face side may have a few sound knots, occasional minor discoloration or stain marks and small inlay repairs.
9.2.3 Grade 3 - For use where the plywood is not normally visible. The veneer may have defects other than those specified above, provided that the serviceability is not affected.
9.3.1 Country of manufacture 9.3.2 Grade for face and back 9.3.3 Bonding
9.3.4 Marine plywood shall comply with B.S. 1088 or the relevant S.S. code. 9.3.5 Nominal thickness of board
10.0 LAMINATED PLASTIC SHEETING
10.1 Laminated plastic sheeting shall comply with the relevant B.S. or S.S codes.
10.2 Where shown to be finished with laminated plastic sheeting, this shall be of abrasion resistant, cigarette- burnt proof, synthetic resins bonded decorative laminated plastic veneer quality of pattern and colour to be selected and approved by the SO. Adhesive to be used shall be of best quality, used strictly in accordance with the manufacturer's instruction.
10.3 The veneer shall be pressure bonded to the core and the core shall have a balancing veneer on the reverse side.
10.4 Generally
10.4.1 Plastic laminate, where indicated in drawings or schedule shall be 1.3mm thick from "Wilsonart", "Pionite" or "Formica" or other approved equivalent plastic laminte.
10.4.2 The Contractor shall ensure that the type of plastic laminate used for each piece of works shall be suitable for the intended use of the surface. Such usage shall include (but not limited to) use on horizontal surface, vertical surface, postforming use, chemical resistance use, fire-rated application, high wear use and electrostatic dissipative application.
10.4.3 The Contractor shall also ensure that the type of laminate used for a certain works shall comply with the necessary fire requirements or fire-rating as required for the said application of works.
10.4.4 Where plastic laminate are applied to fire-rated doors, the Contractor shall ensure that such laminate have been approved for used on such doors by FSB.
10.4.5 The Contractor shall allow (and price) for submission and selection by the S.O of all ranges of plastic laminate including all solid colours, speckled or patterned ranges, metallic selection and wood grain selections.
10.4.6 Plastic laminate shall be manufactured in a flat press by combining decorative papers saturated in melamine resin with phenolic-impregnated kraft layers at pressures exceeding 1000 psi and temperature approaching 150 deg C.
10.4.7 Plastic laminate shall be supplied in complete single size intended for any particular application. No joints shall be allowed on any one single surface unless specifically approved by the SO.
10.4.8 Where patterned or woodgrain selections are used, the Contractor shall ensure that adjacent pieces of such laminate shall match both in pattern/grain line as well as in colour and tonality.
10.4.9 Plastic laminate shall be used in accordance with manufacturer's instructions and details.
10.4.10 The Contractor shall submit all technical datas, test report, FSB's approval letter for use of each type of plastic laminates where required by the SO. 10.4.11 Extruded aluminium hollow section head 75mm x 50mm, mechanically
joined to 50mm diameter vertical posts with screw spline connections to form structural framework.
10.4.12 Framework to form the main support for the cubicles without reliance on panel media or patch fittings.
10.4.13 Assembled with concealed stainless steel fixings while front pilaster panels shall be silicon bonded into door frame and corner profiles.
10.4.14 Floor attachments with adjustable ground clearance from 60mm to 150mm to allow for uneven or sloping floors.
10.4.15 Solid coloured nylon door furniture with handle assembly held in position by a 10mm rebated powder coated aluminium cover plate.
10.4.16 Fixed handles and indication rosette with turn button and emergency release to the exterior, bolted and strewed through to contain the handle assembly. 10.4.17 Concealed nylon door latch and one number of coat hook per cubicle. 10.4.18 Fixed internal knob with rubber buffer to act as a door stopper.
10.4.19 Each door to have 3 nylon covered heavy duty brass hinges, 1 spring loaded to be adjustable for inward or outward opening doors.
10.4.20 The powder coated aluminium framework shall be available in a range of standard colour together with nylon door furniture in a range of complementary colours.
10.4.21 Cubicles for disabled access shall be fitted with special cranked through fixed handle and lever operated turn-button.
10.4.22 Samples of toilet compartments shall be submitted free of cost and fixed at the location as directed by the SO for approval. All materials subsequently delivered to site shall be equal to the approved samples.
10.4.23 The Contractor shall submit shop drawings showing the details of construction, assembly, erection and anchorage for approval by the SO.
10.4.24 Installation of the toilet compartments shall be executed in strict compliance with the manufacturer's recommendations.
10.4.25 The Contractor shall clean and protect the toilet partitions and compartments to the satisfaction of the SO until handing over.
11.0 SOLID POLYMER TOP (METHYLMETHACRYATE – PMMA)
11.1 All vanity top, wash basin counters as shown in the drawings and/or schedule shall be in postform solid surface material, constructed of 13mm thick solid homogeneous, non-porous moulded reinforced polymer top (methymethacrylate PMMA).
11.2 All exposed surfaces shall be seamless, treated and be resistant to scratch, heat by the manufacturer, chemical, stains and no change in colours against ultra violet light. A 10-year warranty shall be submitted by Contractor against manufacturing defects covering the above usage.
11.3 Binders and jointing materials shall be compatible with the material and where exposed, of concealed hairline joints.
11.4 Shop drawings shall be submitted for SO’s approval shall indicate exact positions and locations of all openings, holes and penetrations, including splash boards, edging and trimming details, fascias and such like, and shall be of high grade workmanship quality.
11.5 The construction shall complete with 3mm thick galvanised steel mounting brackets and anchor or expansion bolts.
11.6 The solid polymer top shall comprise of Aluminium Hydroxide (2/3 by weight) and Polymethylmethacrylate without polyester (1/3 by weight) with colours pigments. Only colours approved for good contacts shall be used.
11.7 The solid polymer top shall have the following features 11.7.1 Solid, homogeneous throughout
11.7.2 Densely filled, non-porous
11.7.3 High thermal and impact resistance Seamless impermeable joints a) Does not emit toxic fume when burnt
b) Resistance to germs - unable to support microbial growth c) Resistance to cigarette bums and able to remove the stains d) Fully resistance to HIV contaminants
11.8 Performance Standard
The performance standards of the postform solid surface material are required to match or surpass the following:
Tensile Strength 6000 psi ASTM-D-638
Tensile Modulus 1.5 x 10++ ASTM-D-638
Flexural Strength 7890 psi ASTM-D-790
Flexural Modulus 1.4 x 10++ ASTM-D-790
Elongation 0.4% ASTM-D-638
Property Typical Result Test
Strain at Break 0.810% ASTM-D-638
Work to Break 2.48 in-lbs (modified) ASTM-D-638 Hardness 94 Rockwell 'M' Scale ASTM-D-785 56 Barcol lmpressor
Thermal Expansion 3.02 x 10” in/in/0C ASTM-D-696 Thermal Conductivity 7.0 Btu/hr/sq. ft/ 0f DuPont Test Specific Heat 0.2935 + (0.01 x OC) DuPont Test
pcu/Ib/0C Volumetric Heat
Capacity 0.33 Btu/lb/0F DuPont Test
BtuVcu fu/OF
Gloss (60 deg Gardner) 5-80 (mattc-polished) NEMA LD3-3.15 Colour Stability No change - 200 hrs NEMA LD3-3.10 Wear & Cleanability Passes ANSIZ124.3 Abrasion Resistance No loss of pattern CS-221-66 Weight loss (1,000 cycles) 0.2 gm
Wear (10,000 cycles) 0.008' Boiling Water Surface
Resistance No change NEMA LD3-3.05
High Temperature
Resistance No change NEMA LD3-3.06
Conductive Heat Resistance No change NEMA LD3-3.08 Impact Resistance
Notched Izod . 28ft-lbs/in of notch ASTM-D-256 (Method A) Gainer Solid Colours 9.3 ft- lbs ASTM-D-3029
Sierras 13.3 ft-lbs
Ball Drop ½” sheet 36” 1/2b. ball, no failure ½” sheet 144'. 16 lb. ball, no failure ½” sheet 204". % I b. ball, no failure
Bowls (point impact) No Cracks or Chips ANSI-Zl24.3 & 124.6 Stain Resistance Passes Rating = 41 (modified*) ANSI-ZI24.3
(*additional stains used) ANSI-ZI24.3 (modified*) Weatherability No Change - 1000 hrs ASTM-D-1499
SPECIFICATION FOR CEILING FINISHES & SUPPORT WORK
1.0 GENERALLY
1.1 The ceiling works shall include all materials necessary for or incidental to the execution and completion of the ceiling finishes to the approval of the SO.
1.2 The Contractor shall be responsible for and shall liaise and co-ordinate with workers in other services such as air-conditioning, lighting, security, fire protection etc, in determining the location and schedule for cutting, fitting and making good openings in the ceiling. These works shall be deemed to be included in the rates for ceiling works.
1.3 The Contractor shall not install any ceiling boards or finishes until all wet-works within the space is completed and nominally dry, and M&E services are in place and tested.
1.4 The Contractor shall maintain and provide sufficient protection for the completed ceiling works until handing over upon completion. Until such time, the Contractor shall bear all responsibility and cost of replacements and/or making good any soils, dents or defacements to the finished work.
1.5 The installation of ceiling works shall be carried out in strict compliance with the manufacturer’s specifications and printed instructions, approved installation drawings and method statements.
1.6 All ceiling materials shall be stored on a levelled base clear of the ground on bearers placed not more than 1000mm apart, any stacked in the open shall be covered from external weather elements. When transporting, care should be taken not to damage the surface or edges of the ceiling materials.
2.0 SUBMITTALS
2.1 Workshop Drawings
Workshop drawings for all types of ceiling systems shall be submitted to the SO for approval prior to installation being carried out, showing the dimensions, details of installation proposal, ceiling layout pattern indicating location of light fixtures, grilles, edge details, joints junctions, suspension systems, method of trims around openings and access openings required by M&E works and services.
The Contractor shall employ an M&E Co-ordinator to co-ordinate all the M&E and building requirements and produce detail shop drawings of the reflected ceiling plan with all the services shown for the SO’s approval before commencing with any ceiling work.
2.2 Product Data
Product data shall be submitted to the SO for approval, indicating the product description, including compliance with specified requirements and installation requirements. Mark manufacturer’s brochures to include only those products proposed for use.
2.3 Samples
3 samples for all types of ceiling systems and its finishes specified herein shall be submitted free of charge to the SO for approval prior to ordering of the materials, and subsequent material delivered to site shall be equal to samples approved by the SO.
3.0 MOCK-UPS
At the earliest possible time or latest 3 months before proceeding with the ceiling works, Contractor shall erect mock-up of a typical 3600mm x 3600mm ceiling panel area for the various types of ceiling systems and finishes.
Mock-up shall be at location selected by the SO including finishes, joints and all necessary fixing showing the workmanship to be reviewed and approved by the SO before commencement of ceiling works. The mock up shall also allow for observation of the framing support system before applying the ceiling finishes. Confirmed mock-ups will serve as standard and quality accepted for ceiling work.
Confirmed mock-ups may become part of the completed work of the project. Rejected mock-ups shall be demolished and removed immediately after the rejection with new mock-ups made until confirmation is received.
4.0 MAINTENANCE STOCKS
The Contractor shall ensure that maintenance stock is provided for all various ceiling systems used.
5.0 TYPES OF CEILING SYSTEMS
5.1 Exposed Grid Mineral Fibre Board Suspended Ceilings
The exposed grid mineral fibre board suspended ceiling system shall be as manufactured with the following properties.
(i) Ceiling Tile
Ceiling tile sizes shall be 600mm x 1200mm x 15mm mineral fibrous board with aluminium backing strips behind to prevent sagging, with colour and texture as specified in the drawings, subject to the selection and approval of the SO
All ceiling tile shall conform to ISO R-354 or ASTM C423 standards for sound absorption with minimum Noise Reduction Coefficient (NRC) of 0.60.
All ceiling tiles shall have regular edges and be lay-in type, come complete with perimeter and trim accessories.
Size : 600mm x 1200mm x 15mm
Edge : Fineline Bevel (FLB)
Acoustic Performance : NRC : .50 - .60
CAC : 35 - 39 Fire Reaction : BS 476 Part 6/7 Class ‘0’
Flame Spread : 25 (ASTM E-84) Smoke Developed : 10 (ASTM E-84) Weight : 4.97 kg/m2 Thermal Resistance : R - 1.85
Light Reflectance : LR - 1 (Per ASTM C523)
Dimension Stability : Shall withstand 40 oC and 90% RH without visible sag.
Limited Warranty : 10 Year warranty against visible sag. (ii) Ceiling Suspension Grid
The suspension grid system shall be in 600 x 600 modules, 14 mm flange grids with all vertical grid member at 38mm height, made of hot dipped galvanised steel exposed ‘T’ grid suspended from 4mm diameter galvanised steel wire hangers with adjustable metal spring clips. The finish of the exposed ‘T’ grid shall be subjected to colour selection and approval by the SO.
Metal support systems shall be designed and installed by the Contractor in accordance to the ceiling system manufacturer’s recommendation. All ferrous metals shall be rustproofed. Hangers shall be substantial and sufficient to prevent excessive deflection in the ceiling and able to withstand a variety of upward and downward accesses requirements. Suspension by means of wire will not be permitted. Additional hangers and support work shall be provided at recessed light fittings, air conditioning diffusers, access panels, any other ceiling suspended M&E services and equipment etc.
(iii) Workmanship
Fix ceiling materials in accordance with the manufacturer's recommendations ensuring compliance with design and performance requirements to the approval of the SO. Set out accurately and give levelled soffits, free from undulations and lipping, with all lines and joints straight and parallel to walls.
All runners of exposed grid ceiling system shall be straight, level and evenly spaced out. The SO shall reserve the right in determining the method of setting out and alignment to be employed. Contractor shall ensure that edge ceiling boards/sheets are not less than half in width or length.
Cut and fit ceiling tiles/sheets around recessed light fittings, air conditioning diffusers, sprinkler heads and the like. Form openings for access panels together with additional trimming and framing, etc. Deflection between supports of any part of suspended ceilings shall not be more than 1/450 for spans up to 1830mm and 1/600 for spans over 1830mm.
5.2 Calcium Silicate Ceiling System
The calcium silicate board ceiling shall be 9mm "Masterboard HP" or other equal and approved ceiling board and shall be of approved type pattern and colour and installed in strict accordance with the manufacturer's instructions. The board shall be tested to
