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BUILDINGS
Doc. No. JES-47A1)
Contract No.
JAC0701
Project Title Jurong Aromatics Complex Project
Project Location Jurong Island, in Singapore
OWNER S Name Jurong Aromatics Corporation Pte Ltd.
C 29 Dec 2010 Revised as Marked SJH WSH SHK
0
A 31 Jan 2008 Issue for Comm ents SJH GDY SYH
02 May 201 1
Jurong Aromatics Corporation Pte Ltd
Issued for Construction SJ
29 Feb 2008
Rev
Revised as Marked
Date
SJH
Description
GDY
Prp d
SY H
Chk d Rev d
Owner
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TABLE OF CONTENTS
1. GENERAL
2. BUILDING DESIGN
3. MAIN CONTROL BUILDING
4. SUBSTATION
5. CANTEEN BUILDING
6. MAINTENANCE WORKSHOP AND WAREHOUSE
7. GATE HOUSE
8. FIELD OPERATOR HOUSE
9. LABORATORY BUILDING
10. COMPRESSOR SHELTER
11. CAR PARKING
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1. GENERAL
1.1 Scope
This Engineering Standard describes the minimum requirements for the architectural, civil,
structural and mechanical work in the design and construction of the various buildings including
the following:
Main Control Building
Substation
Canteen Building
Maintenance WorkshopWarehouse
Gate House
Field Operator House
Laboratory Building
Compressor Shelter
Car parking
1.2 References
Refer to Engineering Standard JES-40A2 : General Civil Design Criteria for a listing of Codes,
Regulations, Design Standards and general criteria applicable to this Standard. Reference
should also be made to the following documentation:
1.2.1 Reference Codes
CP 56 (1991) : Code of Practice for internal plastering
CP 82 (1999) : Code of Practice for Waterproofing of reinforced concrete Buildings
CP 90 (2001) : Code of Practice for design and installation of partition walls
CP 05 (1998) : Code of Practice for Wiring of Electrical Equipment of Buildings
CP 10 (2005) : Code of Practice for the Installation and Servicing of Electrical Fire
Alarm SystemCP 13 (1999) : Code of Practice for Mechanical Ventilation and Air-conditioning in
Buildings
1.2.2 Engineering Standard Numbers :
JES-41A5 : Drainage
JES-41A6 : Roads and Paving
JES-43A1 : Concrete Structures and Foundations
JES-46A1 : Structural Steelwork Design
1.2.3 Geotechnical Report
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1.3 Design Loadings
Loads and forces to be used in the design shall be in accordance with Engineering Standard
JES-40A2 : General Civil Design Criteria and ANSI A58.1.
2. BUILDING DESIGN
2.1 General Requirements
- MAIN CONTRACTOR shall include design and construction of buildings in section 1.1together with all the necessary services, facilities, system works and drainage from there,
in his scope of work. The design shall be subject to the APPROVAL of OWNER.
- The sizes of the buildings and shelters shall be based on the equipment to be served,
material stored, and personnel access and space requirements.
- All buildings, to which personnel are regularly assigned shall have lavatory facilities.
2.2 Aesthetic Design Considerations
The aesthetic appearance of all buildings shall be carefully considered and developed to be
complimentary to nearby Buildings. Particular areas for further consideration shall consist of, but
not be limited to, the following:
- Commonality of masonry finishes where appropriate.
- Commonality of colors.
- Continuation of the feature bands in the masonry cladding particularly at wall parapet
coping and above/below windows.
- Commonality of door finishes/styles as appropriate.
- Commonality of external glazing types as appropriate.
- The use of dark colored base plinths for buildings where the ground floor is raised above
grade level.
- The use of complimentary metal wall cladding design, color and trims/flashings.- External building signs and OWNER’s Logo shall be made of enameled aluminum. MAIN
CONTRACTOR shall submit details of all signs including location, size, letter style, text
mounting method to OWNER for approval.
- All internal rooms shall be identified by means of signs made of rigid colored plastic
sheet with a clear plastic laminated cover. MAIN CONTRACTOR shall submit a schedule
of all signs including location, size, letter style, text mounting method to OWNER for
approval.
2.3 Blast Resistant Design
Blast Resistant Design shall be applied for Main Control Building and Substations as follows:
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2.3.1 Applicable Codes and Standards
Blast resistant design shall be in accordance with ‘Design of Blast Resistant Buildings in
Petrochemical Facilities, ASCE’, and standards, specifications and publications referred therein
shall be construed as applicable codes and standard for blast resistant design.
2.3.2 Blast Pressure and Duration
Blast pressure and duration are under the influence of various factors such as explosion types,
building sizes, distances between a structure and a potential source and so on. Blast resistant
buildings should be designed based on blast pressure and duration predicted by Quantitative
Risk Assessment (QRA).If these are not available, the basis for blast load may be developedfrom the references, SG-22 and CIA 1992. According to both documents, blast overpressures for
buildings spaced 30 meters from vapor cloud explosion hazard is specified as commonly used
criteria as follows:
- Side-on overpressure : 3 psi (21 kPa)
- Duration : 100 milliseconds
These blast loading have been widely used in the past for blast resistant design throughout the
industry, so it will be applied to the blast resistant buildings of JAC Project.
2.3.3 Resistance – Analysis Methods
MAIN CONTRACTOR shall use dynamic analysis methods appropriate for specific blast design.
The selected methods shall adequately model the dynamic response of structure to the applied
blast loads and the structural component interaction.
For the Project, the equivalent static design method, which is one of analysis methods provided
in Chapter 6 of the ASCE Report, will be used with blast loads.
a) Equivalent Static Loads
Equivalent static loads may be used to represent the dynamic effects of the blast loading
on each structural component. The equivalent static loads shall be dynamic resistance (R)required for components to withstand the specified blast loading without exceeding the
deformation limits specified in specification.
b) Dynamic resistance
Required dynamic resistance (R) in the direction of blast loads shall be calculated as
followings in accordance with the procedure outlined in ASCE Manual 42.
( )⎟⎟
⎠
⎞
⎜⎜
⎝
⎛
+
×+
×
=
7.02 τ δ
τ α
τ π
α
m
P R
0
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Where: P : Peak blast pressure
δ m : Max displacement factor = Xm/Xy
to : Duration of blast load
T : Fundamental period
L : Span
ρ : Ratio of reinforcement
D : Effective depth of element
α : Energy absorption factor ( 2δm – 1 )
c) Deformation Limits
The deformation limits for blast resistant buildings and structures are as follows:
- Maximum dynamic displacement factor, δm shall not exceed the following limits:
▪ Structural steel 5.0
▪ Reinforced concrete loaded primarily in flexure 3.0
▪ Reinforced concrete subjected mainly to axial compression and/or shear 1.5
▪ Reinforced masonry, where permitted 2.0
▪ Girder for a rigid frame that resists both vertical and lateral loads 1.0
- Plastic rotation gradientS m
X l/=Δ (or tangent of the angle of rotation) at a structural
joint shall not exceed the following limits:
▪ Structural steel 0.040
▪ Reinforced concrete 0.025
▪ Reinforced masonry 0.015
Where:S
l : segment length between plastic or design hinges in the element
Under consideration, inch (mm)
m X : em K R /δ
eK : effective elastic stiffness or structural element, psi/inch (kPa/mm)
2.3.4 Load Combination
a) Normal Loading
Normal (conventional) loading condition, as specified by applicable building codes,
specification, or standards shall be considered for all blast-resistant building.
b) Blast Loading
Blasting loading condition shall include load combination as follows:
12,0
−== mT
t
δ α τ
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U(t)= D + aL + R(t)
Where, U(t) : Total applied time dependent load or its effect
D : Static dead load
R(t) : Time dependent blast load or its effect
a : Reduction factor applied to conventional live load expected
to occur simultaneously with blast load. It shall be taken as
zero if doing so will result in more severe condition. (‘1’ for
floors other than roof, ‘0’ for roof)
c) Wind, earthquake or other extreme loads shall not be considered in combination with blast
loading.
2.3.5 Additional Structural Design Requirements
Design and construction of blast resistant building shall comply with the following general
requirements:
a) Blast resisting components of building shall be of reinforced concrete structure.
b) Lateral load carrying system shall be shear walls or rigid frames with ductile connections.
c) Materials of limited ductility such as unreinforced concrete and unreinforced masonry are
not permitted for blast resisting structural elements. When such materials are used for
non-structural functions in a blast resistant building, consideration shall be given to their
collateral damage due to the blast-induced motion of the building.
d) Reinforced concrete for roof slab and external walls shall be double reinforced. The
amount of reinforcement on each face shall be between 0.25 percent and 2 percent of the
effective cross-sectional area. Slabs and walls shall be a minimum of 5 inches (125
millimeters) and 8 inches (200 millimeters) in average thickness, respectively.
e) Frames and shear walls shall be designed in accordance with Special Provision for
Seismic Design, ACI 318 Chapter 21, except as modified in the Specification.
2.3.6 Doors and Openings
a) For doors in external blast resistant walls, their frames and anchorage shall be designed
statically for 4.0 psi (28 kPa) pressure inward and outward.
b) Exterior doors shall open outward and shall be supported on all edge by the door frames.
Each such door shall be recessed no more than one-half its width into the building.
c) Latch and hinge mechanisms shall be capable of withstanding the door rebound loading.
d) Openings in the exterior blast-resistant wall, excluding doors, shall be kept to a minimum
in numbers and total area.
e) Windows are normally not permitted in exterior blast-resistant walls. Where local
requirements mandate such windows in blast resistant buildings, they shall be qualified by
tests for blast-resistance, subject to OWNER’s approval, and shall be limited to rear wall,
not facing a blast source. The windows inward and outward pressure shall be taken same
value as that for doors in above Clause 2.3.6 a).
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2.4 Foundations and Concrete Work
Design shall be in accordance with Engineering Standard JES-43A1 : Concrete Structures and
Foundations
2.5 Steel Framed Building and Masonry Building
2.5.1 Steel framed buildings
Steelwork framed structures shall be designed in accordance with Engineering Standard JES-
46A1 : Structural Steelwork Design. Roof and wall cladding shall generally be coated profiledinsulated metal sheet or single sheet. Drainage shall be through one or more roof drains leading
into stainless steel pipe downspouts or through leaders and gutters. Insulation shall be provided
as required to suit building use and local climatic data.
2.5.2 Masonry buildings
Masonry buildings shall be one of the two following types:
a) Load bearing exterior masonry walls. Joists and flat metal roof deck supported by exterior
walls and interior columns as required.
b) Non-load bearing exterior masonry walls. Joists and flat metal roof deck supported by
steel column and beam frame system.
Lateral bracing shall be accomplished by means of one of the two following
systems:
a) Exterior masonry walls parallel to wind direction to act as shear walls resisting total
horizontal force of wind. Roof deck to act as a diaphragm transmitting horizontal force of
wind to shear walls.
b) Where a steel column and beam frame system is employed for support of roof deck,
braced frames or rigid frames may be utilized to resist total horizontal wind force.
Design of concrete masonry walls shall be in accordance with BS 5628 and shall resist
lateral forces from wind loading as detailed in Engineering Standard JES-40A2 : General
Civil Design Criteria.
Exterior concrete masonry walls shall not be less than 200mm thick and shall be
constructed with common bond or equal approved.
2.6 Openings
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2.6.1 Doors
In general, 900mm × 2100mm single doors shall be used, with larger doors as required for
moving large equipment into or out of the building.
Internal doors shall be hollow metal or pressed tube industrial doors, timber door plywood faced
(internal only) or anodized aluminum framed glass doors. Hinged doors shall swing out.
External doors of all buildings shall be galvanized steel door with frames. These doors shall
swing out and shall be provided with door closers. Personnel doors shall be equipped with quick
opening “panic bar” hardware equipment in the building, unless other means are provided or
agreed upon by OWNER and MAIN CONTRACTOR. All ironmongery for the buildings shall be
stainless steel to the OWNER approval.
2.6.2 Windows
Windows shall be epoxy powder coated aluminum framed, color may be black. In walls of
pressurized rooms, fixed sash shall be used. In other walls, sliding and/or projected sash shall
be used
Where windows are permitted and used in process or hazardous areas they shall be fixed steel
commercial frames with wire reinforced clear glass.
2.6.3 Glazing
Unless specified otherwise:
a) All exterior window glass shall be high reflective glass 5mm thick unless otherwise noted.
b) All exterior doors except for blast resistance doors shall be glazed with heat absorbing
float glass 5mm thick.
2.7 Plumbing
Plumbing systems shall be furnished and installed complete where required, including all
fixtures, waste, drain and vent lines. Cold/hot water service shall be provided to each appliance
with the distribution piping work. See Table below for sanitary fixture requirements (for each sex).
TABLE OF SANITARY FIXTURES
Number of Number of Fixtures
Persons Water Closet Urinal Lavatory*
1-10 1 1 1
11-20 2 1 2
21-50 2 2 3-5
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(*) 1 Lavatory required for each 10 persons.
Note: Hot automatic air blower for hand drying shall be provided for every toilet.
2.8 Heating, Ventilating and Air Conditioning
2.8.1 General
a) Heating, ventilating and air conditioning systems shall be designed in accordance with
the American Society of Heating, Refrigerating and Air Conditioning Engineers Standards
(ASHRAE), and shall comply with all local laws and codes governing such installations.R134a shall be used and other refrigerant may be used, subject to agreement with
OWNER.
b) The following room temperatures shall be maintainable:
Area Summer Winter
i. Control Rooms 20-25°C/50±15RH 20-25°C/50%±15RH
ii. Office Areas 20-25°C 20-25°C
iii. MCC/Switchgear Max. 30°C Min. 5°C
c) Ventilating equipment shall be sized to maintain the requirements of ASHRAE Standard
62-1, Ventilation for Acceptable Indoor Air Quality, where applicable and according to the
following minimum outside air requirements for ventilation:
i. Mechanically ventilated switch rooms and locker rooms: 10 air changes/hour
ii. Toilets : 1.4m3/hr per water closet or urinal.
iii. Compressor, pump, and blower rooms: 10 air changes/hour
2.8.2 Control Rooms
a) A central air conditioning system with air cooled condensing unit shall maintain the
specified indoor design conditions and shall be pressurized to 2.5-mm WG.
b) The system shall be completed with ducted supply, return, exhaust and automatic control
system.
2.8.3 Offices, Lockers and Toilets
a) Office rooms, meeting rooms and the others shall be air conditioned by means of split
unit type air conditioner or multi zone type air conditioner with direct expansion cooling
unit. The indoor unit shall be either of the following type as required in the detail design.
- Ceiling mounted cassette type fan coil unit or floor/wall mounted type fan coil unit.
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b) All condensing units shall be installed on top of the roof. The building design shall provide
accessibility for carrying out routine maintenance.
c) Ventilation of toilets and lockers shall be by motor driven, exhaust fans. Make-up air shall
be thru louvered or undercut doors.
2.8.4 MCC and Switchgear Rooms
a) The switchgear rooms in substations shall be air-conditioned to maintain the specified
indoor design conditions.
b) Switchgear rooms located in hazardous areas and housing general purpose non-
explosion-proof switchgear and equipment shall be ventilated by means of fans of non-
overloading type designated to maintain a positive pressure air system in accordance
with NFPA 496 and shall be pressurized to 2.5-mm WG. Relief to atmosphere shall be
through an adjustable relief damper and by leakage.
c) Ventilation of switchgear rooms located in non-hazardous areas shall be by wall or roof
mounted exhaust air fans and weatherproof louvers.
2.8.5 Maintenance Workshops, Pump Shelters, Compressor Shelters
Ventilation of hot and cold oil, pump, compressor, and blower rooms shall be provided by
exhaust fans located high in the exterior walls or roof. Outside air supply shall be through
louvers with a horizontal throw located low in exterior walls.
3. MAIN CONTROL BUILDING
3.1 General Description
The Main Control Building (MCB) shall be a two story blast resistant building, generally consistof an in-situ reinforced concrete structure that comprises; foundations, supporting frame, floor or
roof slabs and beams.
The 1st floor level shall be raised 300mm above the finish grade level.
Thermal insulation shall be provided to all surfaces of the external envelope to ensure that the
following minimum “U” values are maintained.
Walls 0.60W/m2°C
Roofs 0.45W/m2°C
A small section of the roof structure shall be extended to provide and enclosed reinforced
concrete chamber of maximum height 1.8m, complete with blast/suction proof valves, exhaust
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air louvers and a fresh air intake stack with chemical filter inside. The entire installation shall besized to suit the requirements of the HVAC design.
Each working floor area shall be divided or fire compartmented by full height walls to provide the
following areas:-
- Control Room
- Eng’g Station Room
- Office
- Meeting Room
- Technology Manager Room
- Senior Operation Manager Room- Shift Foreman Room
- Division Leader Room
- Doc. Room
- Toilet
- Locker Room
- Shower Room
- Cleaner Room
- Dining Room & Operator’s Lounge
- Pantry
- Store
- Fax/Copy
- Server Room
- AC Plant Room
- Inst. Aux. Room
- Electrical Room
- Battery Room
- UPS Room
- Gas Extinguishing System Cylinder Room
- Telecommunication Room
Access flooring systems that form cabling voids between the flooring panels and the supporting
RC slabs shall be provided to rooms in accordance with Section 3.2.11
3.2 Building Components
3.2.1 External Walls
The external wall of buildings shall be in-situ reinforced concrete designed to withstand pressure
as specified in clause 2.3. The outer faces shall be painted on fair faced smooth concrete and
the inner faces shall be lined with dense concrete block walls or vapor sealed insulated gypsum
wall boards secured to screw and plug fixed battening at 600mm centers.
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3.2.2 Internal Walls
The dense concrete block work or lightweight partitioning to a nominal thickness of 100mm from
a steel stud and plaster board system, comprises of two 12.0mm gypsum wall boards secured
to each face of boxed galvanized metal studs, fixed at 600mm centers and mounted on a sole
plate.
3.2.3 Internal Windows
Glazed openings provided in the Control Room walls shall be from stainless steel sections,
screw and plug fixed into the opening reveals.
The frames shall be glazed in 3mm clear glass using stain-free, non-setting putty, except that
transparent, laminated Georgian polished wire glass with fire-resisting properties shall be used
for the internal windows between the control room and the operator’s room. These glass panes
shall be fixed with screwed metal bolts.
3.2.4 External Windows
External widows shall not be permitted for blast resistance designed buildings unless required
by special purpose.
3.2.5 External Doors
All external doors shall be 2-hour fire rated designed to resist an explosion pressure.
Doors and frames shall be designed for the same forces as applied normally to the walls in
which the doors are mounted in accordance with Section 2.3
Construction shall be from flush finished painted galvanized steel sheet, secured to a fabricated
steel section framework, provided with an insulating core from non-combustible materials to
satisfy the requirements of the standard NFPA fire test.
All doors are to be hung in profiled galvanized steel frames, securely fixed into formed rebatedopenings in the reinforced concrete walls. Each door leaf shall be provided with frame mounted
air sealer stripping to maintain an air tight seal.
Double leaf equipment access doors shall be provided with a vertical removable steel bearer,
mounted at the meeting stiles to provide additional support against the design overpressure,
this bearer shall be capable of transmitting the overpressure, this bearer shall be capable of
transmitting the overpressure design forces, from the door into the reinforced concrete wall
structure. One leaf may also be used as a personnel door but the other leaf and over panel
when not in use shall be bolted to the frame.
All doors are to be single swing opening outwards to the following sizes including frames:-
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- Personnel 0.9m x 2.1m- First Aid Access 1.5m x 2.1m
- Equipment Access 1.8m x 2.1m*
Note:
The opening height for doors marked thus * are to be a minimum of 2.7m. Frames are to be
provided with a removable transom that will enable fixing in of an over door panel. This panel
shall be constructed from materials consistent with those of the door and shall be designed to
withstand the same design pressures.
3.2.6 Internal Doors
All internal doors shall be capable of maintaining the fire integrity of the wall or partition into
which they are to be mounted with a minimum fire rating of ½ hour, with the exception of the
toilet cubicle doors, where no fire rating is necessary. Doors shall generally be of timber
construction, flush pattern, solid cored, finished in wood veneer facings and provided with
hardwood lapping. All doors shall be hung in profiled galvanized pressed steel frames, securely
fixed back to walls or the building fabric.
Each door enclosing an air conditioned space or opening onto a corridor shall be provided with
frame mounted air sealer strips, interconnecting doors between similar areas need not be air
sealed. All doors are to be single swing, where possible opening in the direction of egress from
the building, to the following basic size, 0.9m x 2.1m high.
Doors specifically for equipment access shall be constructed from similar materials as for other
internal doors and provide a minimum opening size of 1.8m x 2.1m* (Refer to note* clause
3.2.5).
3.2.7 Floors
All areas shall be in-situ reinforced concrete slabs, finished in accordance with clause 3.2.12
and supported directly over RC walls or by RC beams spanning the walls.
Where cable voids are required to suit electrical or instrument equipment, areas are to be
provided with a full access raised modular flooring system, comprising 600mm square panels
set to line and level on adjustable pedestals placed to suit the 600mm modular grid.
3.2.8 Roof
Roof construction shall be from an in-situ reinforced concrete slab supported by RC beams
spanning the load bearing RC walls.
The top surface of the slabs shall be formed to falls and finished with a constant thickness finish
comprised of the following duplicate waterproofing system:-0
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- Lightweight Foam Concrete
The lightweight concrete screed shall comprise Type I or Type II cement to ASTM C 150,
foaming emulsion and water. Installed dry density shall be approximately 550 kg/m3, or
recommended by the roofing system VENDOR
- Sand/Cement Screed
20mm sand/cement screed applied under the waterproofing membrane.
- Water Proof Membrane
MAIN CONTRACTOR shall submit the product data sheet of the roof waterproofing
membrane for OWNER approval
- Rigid Insulation
The insulation shall be minimum thickness approx. 50mm rigid rockwool panels, as
recommended by roofing system VENDOR.
- Slip Membrane
A slip membrane will allow the screed to thermally move on the rigid insulation below and
will allow the rainwater to pass the waterproofing membrane below
- Screed Concrete
40mm concrete screed placed on the slip membrane shall be permanently protecting the
insulation layer.
- Urethan Waterproofing
The water-proofing shall be suitably raised upon the internal face of parapet walls.
3.2.9 Drainage and Sewerage
Roof rainwater shall be directly trapped through parapet walls by external stainless steel hopper
heads and drained out by stainless steel pipes to the storm water drainage system. Stainless
steel down pipes shall be suitably fixed to building fronts.
3.2.10 Suspended Ceilings
All areas occupied by personnel to be provided with acoustic patterned or smooth mineral fiber
tile. Toilet area to be provided with washable, moisture proof mineral fiber tiles. All ceiling tiles
shall be laid on exposed grid type suspension system.
3.2.11 Sanitary Ware
All fittings shall be from white glazed vitreous china , fired clay or stainless steel supplied as
matching suites from a single manufacturer.
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W.C.’s shall be from vitreous china complete with a low level flushing cistern and connectingfitments including “P” trap.
Wash hand basins shall be in vitreous china complete with chromium plated pillar taps, trapped
waste pipe connection and wall mounting brackets, approx. size 0.55 x 0.4m.
Urinals shall be the wall hung vitreous china with flushing rim type, complete with trapped outlet
and common manual operation type.
Cleaner room sinks shall be in fired clayware, cleaner’s sink pattern, approx. size 0.61 x 0.30 x
0.23 deep, complete with wall mounted chromium plated bib taps, hinged bucket grating,
hardwood pad and floor support legs in stainless steel.
3.2.12 Finishes
In general the internal finishes shall be as follows:-
Office F1 W1 C1
Meeting Room F1 W1 C1
Technology Manager Room F1 W1 C1
Senior Operation Manager Room F1 W1 C1
Division Leader Room F1 W1 C1
Corridor F1 W1 C1Doc. Room F1 W1 C1
Dining Room & Operator’s Lounge F1 W1 C1
Fax/Copy F1 W1 C1
Pantry F1 W1 C1
Store F3 (a) W1 C3
Shift Foreman Room F1 W1 C1
Control Room F2/F3 (a) W1 C1
Eng’g Station Room F2/F3 (a) W1 C1
Server Room F2/F3 (a) W1 C1
Inst. Aux. Room F2/F3 (a) W1 C3
Telecommunication Room F2/F3 (a) W1 C3
Electrical Room F3 (a) W1 C3
Battery Room F3 (a) W1 C3
UPS Room F3 (a) W1 C3
AC Plant Room F3 (a) W1 C3
Gas Extinguishing System Cylinder Room F3 (a) W1 C3
Toilet F6 (b) W4 C2
Locker Room F1 W1 C1
Shower Room F6 (b) W4 C2
Cleaner Room F6 (b) W4 C2
Stairs and Landing F1 W1 C1 or C3 (See Note 1)
NOTE 1:- With non slip nosing.
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FLOORS
F1 - Vinyl tiles on screed
F2 - Vinyl tiles on access flooring
F3(a) - Epoxy paint coating on concrete steel trowel finish
F3 (b) - Epoxy paint coating on concrete hardener
F4 - 500mm x 500mm carpet tiles on screed
F5 - Marble tiles on sand/cement bed
F6 (a) - 300mm x 300mm Non-slip ceramic tiles on sand/cement bed
F6 (b) - 200mm x 200mm Non-slip ceramic tiles on sand/cement bed
NOTE 2
The junction of walls and floors is to be finished by a 100mm minimum height Vinyl skirting
carried out in materials consistent with the surrounding floor finish. Where ceramic tiles are
specified, coved ceramic base shall be used except for the toilets where ceramic tiles shall be
used.
NOTE 3
Any un-finished concrete surfaces under access flooring shall be sealed by the application of
an epoxy based dust proofing paint.
WALLS
W1 - Acrylic emulsion paint on cement plaster
W2 - Acrylic emulsion paint on fair faced concrete
W3 - Epoxy paint on cement plaster
W4 - Glazed ceramic wall tiles
CEILINGS
C1 - Acoustic mineral fiber tiles with suspended ceiling system
C2 - Moisture resistant, washable surface mineral fiber tiles with
suspended ceiling system
C3 - Acrylic emulsion paint on fair faced concrete
3.3 Special Requirements
3.3.1 Air Conditioning
a) A central air conditioning system with air cooled condensing unit shall maintain the
specified indoor design conditions.
b) The system shall be completed with ducted supply, return, exhaust and automatic control
system.
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3.3.2 Emergency Escape Routes
Maximum travel distance from the means of exit to any point in the building shall be 15m. All
doors shall open in the direction of the escape route and be so positioned so as not to block any
stairway. Signs shall be supplied and erected to indicate clearly the route of escape in case of
emergency.
4. SUBSTATIONS
4.1 General Description
Substations shall be of single storey, blast resistant building. The 1st floor level shall be raised
300mm above the finish grade level .
The construction shall consist of generally in-situ reinforced concrete foundations, columns,
floor or roof slabs and beams. On two ends of the switchgear room a single door shall be
installed as personnel door, and on the front end a double door shall be installed sized for the
passage of the largest piece of equipment.
The layout and design of substations, including drainage systems, cabling, etc. shall be such as
to allow for future horizontal extension.
The working floor area shall be divided or fire compartmented by full height walls to provide the
following areas :
- Switchgear Room
- FAR Room
- UPS Room
- Battery Room
- Gas Extinguishing System Cylinder Room
- Air Lock
4.2 Building Components
4.2.1 External Walls
The External wall shall be in-situ reinforced concrete designed to withstand pressure as specify
in clause 2.3. The outer face shall be colored painted on fair faced surface. The transformer
partition walls shall be in-situ reinforced concrete minimum 200mm thickness and shall be
extended not less than 600mm for transformer side and height. The transformer partition walls
shall be fair faced finish.
4.2.2 Interior Walls and Partitions
Internal walls shall be non-load bearing dense concrete blocks, 200mm thick (no fire resistance
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requirement).
4.2.3 External Doors
All external doors shall be 2-hour fire rated designed to resist an explosion pressure.
Doors and frames shall be designed for the same forces as applied normally to the walls in
which the doors are mounted in accordance with Section 2.3.6
Construction shall be from flush finished painted galvanized steel sheet, secured to a fabricated
steel section framework, provided with an insulating core from non-combustible materials to
satisfy the requirements of the standard NFPA fire test.
All doors are to be hung in profiled galvanized steel frames, securely fixed into formed rebated
openings in the reinforced concrete walls. Each door leaf shall be provided with frame mounted
air sealer stripping to maintain an air tight seal.
Double leaf equipment access doors shall be provided with a vertical removable steel bearer,
mounted at the meeting stiles to provide additional support against the design overpressure,
this bearer shall be capable of transmitting the overpressure design forces, from the door into
the reinforced concrete wall structure. One leaf may also be used as a personnel door but the
other leaf and over panel when not in use shall be bolted to the frame.
All doors are to be single swing opening outwards to the following sizes including frames:-
- Personnel 0.9m x 2.1m
- First Aid Access 1.5m x 2.1m
- Equipment Access 1.8m x 2.1m*
Note:
The opening height for doors marked thus * are to be a minimum of 2.7m. Frames are to be
provided with a removable transom that will enable fixing in of an over door panel. This panelshall be constructed from materials consistent with those of the door and shall be designed to
withstand the same design pressures.
4.2.4 Floors
All areas shall be in-situ reinforced concrete slabs, finished in accordance with clause 4.2.7 and
supported directly over RC walls or by RC beams spanning the walls.
Where cable voids are required to suit electrical or instrument equipment, areas are to be
provided with a full access raised modular flooring system, comprising 600mm square panels
set to line and level on adjustable pedestals placed to suit the 600mm modular grid.
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4.2.5 Roofs
Roof construction shall be from an in-situ reinforced concrete slab supported by RC beams
spanning the load bearing RC walls.
The top surface of the slabs shall be formed to falls and finished with a constant thickness finish
comprised of the following duplicate waterproofing system:-
- Lightweight Foam Concrete
The lightweight concrete screed shall comprise Type I or Type II cement to ASTM C 150,
foaming emulsion and water. Installed dry density shall be approximately 550 kg/m3, or
recommended by the roofing system VENDOR
- Sand/Cement Screed
20mm sand/cement screed applied under the waterproofing membrane.
- Water Proof Membrane
MAIN CONTRACTOR shall submit the product data sheet of the roof waterproofing
membrane for OWNER approval
- Rigid Insulation
The insulation shall be minimum thickness approx. 50mm rigid rockwool panels, as
recommended by roofing system VENDOR.
- Slip Membrane
A slip membrane will allow the screed to thermally move on the rigid insulation below and
will allow the rainwater to pass the waterproofing membrane below
- Screed Concrete
40mm concrete screed placed on the slip membrane shall be permanently protecting the
insulation layer.
- Urethan Waterproofing
The water-proofing shall be suitably raised upon the internal face of parapet walls.
4.2.6 Drainage and Sewerage
Roof rainwater shall be directly trapped through parapet walls by external stainless steel hopper
heads and drained out by stainless steel pipes to the storm water drainage system. Stainless
steel down pipes shall be suitably fixed to building fronts. Transformer pits shall discharge to
drainage system through adjacent reinforced concrete trapped gullies.
4.2.7 Finishes
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In general the internal finishes shall be as follows:-
Switchgear Room F3(a) W1 C3
FAR Room F2/F3(a) W1 C1
UPS Room F3(a) W1 C3
Battery Room F3(a) W1 C3
Gas Extinguishing System Cylinder Room F3(a) W1 C3
Air Lock F3(a) W1 C3
FLOORS
F1 - Vinyl tiles on screedF2 - Vinyl tiles on access flooring
F3(a) - Epoxy paint coating on concrete steel trowel finish
F3 (b) - Epoxy paint coating on concrete hardener
F4 - 500mm x 500mm carpet tiles on screed
F5 - Marble tiles on sand/cement bed
F6 (a) - 300mm x 300mm Non- slip ceramic tiles on sand/cement bed
F6 (b) - 200mm x 200mm Non-slip ceramic tiles on sand/cement bed
NOTE 2
The junction of walls and floors is to be finished by a 100mm minimum height Vinyl skirtingcarried out in materials consistent with the surrounding floor finish. Where ceramic tiles are
specified, coved ceramic base shall be used except for the toilets where ceramic tiles shall be
used.
NOTE 3
Any un-finished concrete surfaces under access flooring shall be sealed by the application of an
epoxy based dust proofing paint.
WALLS
W1 - Acrylic emulsion paint on cement plaster
W2 - Acrylic emulsion paint on fair faced concrete
W3 - Epoxy paint on cement plaster
W4 - Glazed ceramic wall tiles
CEILINGS
C1 - Acoustic mineral fiber tiles with suspended ceiling system
C2 - Moisture resistant, washable surface mineral fiber tiles with
suspended ceiling system
C3 - Acrylic emulsion paint on fair faced concrete
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4.3 Special Requirements
4.3.1 Transformer Compounds
Suitable concrete pads or pedestals shall be provided for mounting transformers and earthing
resistors.
Pedestals for transformers equal or greater than 2MVA shall be located inside reinforced
concrete pits, having sufficient volume to contain the transformer total oil quantity, filled with
25/50mm graded pebbles. The pit shall have a sloping bottom with a suitable fire trapped
drainage facility, connected to the AOC drainage system.
The entire area around transformers rated below 2MVA shall have a common 200mm perimeter
kerb and the void between the kerbs and the equipment pads shall be filled with graded pebbles
laid on unpaved soil, having a total volume sufficient to contain any one transformer oil.
A common demountable fence with lockable access doors shall be provided. Concrete fire wall
shall be provided between HV terminal boxes, between adjacent transformers and between all
transformers, such walls shall be fire-resistant.
4.3.2 Handrailing and Fencing
Handrailings for platforms shall be painted galvanized steel. Removable sections shall be
provided in front of the switchgear room double doors.
Fencing shall be galvanized coated welded steel mesh, in removable galvanized steel framed
panels. Gates shall be provided where required.
4.3.3 Cable Entries through Walls and Floors in the Field Auxiliary Room(FAR) and Switchgear Room
The cable entries for electrical and instrument cables shall be distributed over the exterior walls
of the electrical and instrument equipment room.
Equipments ducts or cables into Switchgear Room through the wall shall be suitably sealed.
No piping for drainage or utilities except for instrument air supply shall be routed through the
cable void or the instrument equipment, battery room or electrical room. No electric cables,
except for instrument/computer electricity supply and illumination, shall be routed through the
cable void.
The proper level and detailing of cable entries into the wall void shall be made at such a level
and detail so as to prevent penetration of rain water, fire-fighting water, oil, liquefied gas or other
liquids, finding its way into the void.
Cable support shall be provided for cables entering through cable transits to ensure that cables
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enter horizontally by utilizing a concrete support which shall extend approximately 1000mm fromthe building.
4.3.4 Approach Ramps
Approaches to the main entrances of Field Auxiliary Room(FAR) shall be ramps with a slope of
not more than 1 in 8 with a non-slip finish on the top surface.
4.3.5 Air Conditioning
The substations shall be air-conditioned by packaged air conditioner with air cooled condensing
unit to maintain the specified indoor design conditions. A small section of the roof structure shall be extended to provide an enclosed reinforced
concrete chamber of maximum height 1.8m, completed with blast/suction proof valves, exhaust
air louvers and a fresh air intake stack with chemical filter inside. The entire installation shall be
sized to suit the requirements of the HVAC design.
5. CANTEEN BUILDING
5.1 General Description
The Canteen Building is contained within a two storey concrete framed building.
Thermal insulation shall be provided to all surfaces of the external envelope to ensure that the
following minimum “U” values are maintained.
Walls 0.60W/m2°C
Roofs 0.45W/m2°C
The Canteen Building shall comprise the following :
- Kitchen Room with small Store Room
- Staff Canteen
- Toilet
- Storage
- Gas Store
- Water Heater Room
- Washing-up Room
5.2 Building Components
5.2.1 External Walls
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External Walling shall be formed from 200mm thickness dense concrete block except for StaffCanteen which shall be aluminum frame and glass with sliding door.
5.2.2 Interior Walls and Partitions
Internal walls shall be 200mm thickness dense concrete blocks by full height walls.
5.2.3 Doors
Main entrance at north and south of staff canteen shall be double glass doors (swing type) with
heat absorbing glass.
Generally doors to be zero fire rated wooden doors except doors to Gas Store shall be 1 hour
fire resistant (steel door), solid core, plywood faced, hardwood lipped all round. Doors shall be
hung in profiled galvanized pressed steel frames.
Single doors and the actives leaves of double doors shall be provided with self closers.
5.2.4 Floors
All area shall be in-situ reinforced concrete slabs, finished in accordance with clause 5.2.9 and
supported directly over R.C. beams
5.2.5 Roof
Roof to be composite insulated metal roof sheeting to give “U” value of 0.45W/m2 °C . The floor
above corridor shall be slab concrete and surrounded by a concrete parapet.
5.2.6 Suspended Ceilings
Ceiling shall be provided with acoustic patterned or smooth, washable, moisture proof mineral
fibre tiles, all attached to a support/suspension system, galvanized pressed steel components:
screw and plug fixed to the concrete soffits.
5.2.7 Sanitary Ware
All fittings shall be from white glazed vitreous china, fired clay or stainless steel supplied as
matching suites from a single manufacturer.
W.C ’s shall be from vitreous china complete with a low level flushing cistern and connecting
fitment s including “P” trap.
Wash hand basins shall be in vitreous china complete with chromium plated pillar taps, trapped
waste pipe connection and wall mounting brackets, approx. size 0.55 x 0.4m.
Urinals shall be the wall hung vitreous china with flushing rim type, complete with trapped outlet
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and common manual operation type.
Cleaner’s room sinks shall be in fired clayware, cleaner’s sink pattern, approx. size 0.61 x 0.30
x 0.23 deep, complete with wall mounted chromium plated bib taps, hinged bucket grating,
hardwood pad and floor support legs in stainless steel.
Drainage of Kitchen Room shall be lined to grease tap provided in each room prior to draining
out to sanitary system.
5.2.8 Air Conditioning
STAFF CANTEEN AND TOILETS
a) The Canteen shall be air-conditioned by packaged air conditioner with air cooled
condensing unit to maintain the specified indoor design conditions.
b) The system shall be completed with ducted supply, return, exhaust and automatic control
system.
c) Ventilation of toilets shall be by motor driven, exhaust air fans. Make-up air shall be thru
louvered or undercut doors.
d) Remote located, individual offices will be air conditioned by thru-wall (window type) or splittype air conditioning units.
5.2.9 Finishes
In general the internal finishes shall be as follows:-
Kitchen Room F6 (b) W4 C2
Staff Canteen F5 W1 C1
Storage F3(a) W1 C3
Gas Store F3(a) W1 C3
Store Rooms F3(a) W1 C3Water Heater Room F3(a) W1 C1
Toilets F6 (b) W4 C2
Washing up Room F6 (b) W4 C2
Board Room F4 W1 C1
Director’s Room F4 W1 C1
Meeting Room F4 W1 C1
Reception Room F4 W1 C1
Locker F1 W1 C1
Shower Room F6(b) W4 C2
Toilet F6(b) W4 C2
Walkway F5 W1 C1
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FLOORS
F1 - Vinyl tiles on screed
F2 - Vinyl tiles on access flooring
F3(a) - Epoxy paint coating on concrete steel trowel finish
F3(b) - Epoxy paint coating on concrete hardener
F4 - 500mm x 500mm carpet tiles on screed
F5 - Marble tiles on sand/cement bed
F6 (a) - 300mm x 300mm Non-slip ceramic tiles on sand/cement bed
F6 (b) - 200mm x 200mm Non-slip ceramic tiles on sand/cement bed
NOTE 1
The junction of walls and floors is to be finished by a 100mm minimum height Vinyl skirting
carried out in materials consistent with the surrounding floor finish. Where ceramic tiles are
specified, coved ceramic base shall be used except for the toilets where ceramic tiles shall be
used.
.
WALLS
W1 - Acrylic emulsion paint on cement plaster
W2 - Acrylic emulsion paint on fair faced concrete
W3 - Epoxy paint on cement plaster
W4 - Glazed ceramic wall tiles
CEILINGS
C1 - Acoustic mineral fiber tiles with suspended ceiling system
C2 - Moisture resistant, washable surface mineral fiber files with suspended
ceiling system
C3 - Acrylic emulsion paint on fair faced concrete
6. MAINTENANCE WORKSHOP AND WAREHOUSE
6.1 General Description
MAINTENANCE WORKSHOP:
The Maintenance Workshop shall be housed within a single span steelwork portal framed
structure, and shall be provided with a two storey construction along one side to accommodate
offices and ancillary accommodation located on both floors.
The structural steel frame of the Maintenance Workshop shall be also designed for support a full
length Electrical Overhead Traveling crane with an auxiliary hoist of 30 ton capacity, having a liftheight
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of 7m. The height to eaves will be approximately 10m, subject to confirmation by MAINCONTRACTOR, and the roof pitch shall be not less than 6°.
MAIN CONTRACTOR shall be responsible for supply and installation Electrical Overhead
Traveling crane with an auxiliary hoist of 30 ton capacity completed with runway beam and all
auxiliary facilities required e.g. Electrical power supply etc..
WAREHOUSE:
The Warehouse consists of machine and spare parts storage, chemical storage,
loading/unloading bay and office.
The machine and spare parts storage shall be housed within a single span steelwork portal
framed structure and shall have an elevated floor to allow loading and unloading. The external
walls and roof of machine and spare parts storage shall be of insulated profiled metal sheeting
with a concrete masonry dado wall to a height of 2.1m.
The machine and spare parts storage shall contain within it suitably sized and air conditioned
rooms cover two storey of the storage for all environmentally sensitive instrumentation and
electrical spares.
The chemical storage shall be housed within a single span steelwork portal framed structure.
Within the chemical storage shall be an elevated foam storage vessel with access provision for
the foam tender beneath the vessel to cover the oil storage area.
The chemical storage should have kerbed floor to contain any spillage.
External walls and roof of chemical storage shall be of insulated profiled metal sheeting with a
concrete masonry dado wall to a height of 2.1m.
Thermal insulation of these buildings shall be provided to the walls and roof to ensure thefollowing minimum “U” values are maintained.
Walls - 0.6W/m2°C
Roof - 0.45W/m2°C
The floors shall be reinforced concrete slab with a epoxy paint coating on concrete hardener for
heavy duty purpose to the Warehouse and Maintenance Workshop.
The officers shall consist of in-situ reinforced concrete slabs supported by structural steelwork
beams and load bearing concrete masonry walls.
Each area shall be divided or fire compartmented by full height, walls to provide the following
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areas:
MAINTENANCE WORKSHOP
- Offices
- Meeting Room
- Supervisor Room
- Coffee Room / Pantry
- Operation & Maintenance of Electrical and Instrument
- Operation & Maintenance of Mechanical
- Tool Room
- Staff Facilities (Toilets, Showers, Locker Rooms)
WAREHOUSE – All at approx. 1.2m above grade
- Machine and spare parts storage area
- Chemical Storage Area
- Loading/Unloading Area between machine and spare parts storage and chemical storage
- Forklift Park/Charging Area
- Offices (Air Conditioned)
- Toilet Facilities
6.2 Building Components
6.2.1 External Walls
Shall be profiled metal sheeting, with insulation and internal lining sheet to give 0.6W/m2 °C “U”
value above dado wall.
Dado wall to be provided at a height of 2.1m framed in 200mm dense concrete blocks plus
50mm rockwool insulation board with 25mm air gap and 100mm internal dense concrete block
Two-storey areas shall be of dense concrete cavity block work construction to give 0.6W/m2°C
“U” value. Wall thickness shall be designed to meet slenderness and stability requirements.
6.2.2 Internal Walls
Shall be 200mm dense concrete block with plastering and painting in Maintenance Workshop,
Warehouse and enclosing walls of office areas, staircase and corridors. Wall bracing shall be
provided if necessary to meet slenderness requirements.
Division walls of offices at 1st floor level shall be lightweight partitioning to a nominal thickness
of 100 mm from a steel stud and plasterboard system, comprising of two 12.0mm gypsum wall
boards secured to each face of galvanized metal studs, at 600 centers.
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6.2.3 External Doors
The Warehouse is to be provided with 3 No. electrical sliding doors, 5m wide x 4m high, top
hung with guides cast-in to RC slab.
Doors to be flush finished painted galvanized steel sheet secured to a fabricated steel section
framework, with insulation core to give required “U” value.
The chemical storage is to be provided with one electrical sliding door, 5m x 4m high.
All external doors shall be rated 1 hour fire resistance. Construction shall be from flush finished
painted galvanized steel sheet, secured to a fabricated steel section framework – with insulation
core.
Doors shall be hung in profiled galvanized steel frames, fixed to walls with galvanized steel lugs.
Single doors and the active leaves of double doors shall be provided with self closers, panic
latches and wind hooks.
All door sizes shall be :-
- Single doors : 0.9m x 2.1m
- First Aid Access : 1.5m x 2.1m
- Equipment Doors : 1.8m minimum x 2.5m depending on the largest piece of
equipment.
Equipment doors shall be single swing, comprising a single active leaf, and a fixed side panel.
Frames shall be provided with a removable transom that will enable fixing in of an over door
panel.
All ironmongery fittings of the same kind shall be of one make and type. They shall be stainlesssteel and shall be fixed with non-corroding screws.
6.2.4 Internal Doors
Doors to offices shall be 1/2 hour fire resistant, solid core; plywood faced, hardwood lipped all
round. Doors shall be hung in profiled galvanized pressed steel frames.
Door to offices to have 150mm width x 300mm depth viewing panels with 5mm polished plate
glass.
Door to Instrument/Electrical Equipment Storage of Warehouse, 2nd Floor Corridor and 1st
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Floor Offices of Maintenance Workshop shall be 1 hours fire resistant steel door.
6.2.5 Windows
External windows shall be aluminum windows to offices, with 14mm thick double glazing,
comprising 2 light reflective, heat absorbing glass units.
6.2.6 Floors
1st floors shall be reinforced concrete slab with epoxy paint coating on concrete hardener for
heavy duty purpose to the Warehouse and Maintenance Workshop
1st floor to offices shall consist of in-situ reinforced concrete slabs supported by structural
steelwork beams and load bearing concrete masonry walls with finishes in accordance with
Section 6.2.11
6.2.7 Roof
Roof to be composite insulated metal roof sheeting shall be give “U” value of 0.45W/m2 °C.
Roof over offices at first floor shall be reinforced concrete and surrounded by a concrete parapet.
Finish shall be of constant thickness and shall consist of the following duplicate waterproofing
system:
- Lightweight Foam Concrete
The lightweight concrete screed shall comprise Type I or Type II cement to ASTM C 150,
foaming emulsion and water. Installed dry density shall be approximately 550 kg/m3, or
recommended by the roofing system VENDOR
- Sand/Cement Screed
20mm sand/cement screed applied under the waterproofing membrane.
- Water Proof MembraneMAIN CONTRACTOR shall submit the product data sheet of the roof waterproofing
membrane for OWNER approval
- Rigid Insulation
The insulation shall be minimum thickness approx. 50mm rigid rockwool panels, as
recommended by roofing system VENDOR.
- Slip Membrane
A slip membrane will allow the screed to thermally move on the rigid insulation below and
will allow the rainwater to pass the waterproofing membrane below
- Screed Concrete
40mm concrete screed placed on the slip membrane shall be permanently protect the
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insulation layer.
- Urethan Waterproofing
The water-proofing shall be suitably raised upon the internal face of parapet walls.
6.2.8 Suspended Ceilings
All areas occupied by personnel to be provided with acoustic patterned or smooth mineral fiber
tile. Toilet area to be provided with washable, moisture proof mineral fiber tiles. All ceiling tiles
shall be laid on exposed grid type suspension system.
6.2.9 Sanitary Ware
All fittings shall be from white glazed vitreous china, fired clay or stainless steel supplied as
matching suites from a single manufacturer.
W.C ‘ s shall be from vitreous china complete with a low level flushing cistern and connecting
fitment s including “P” trap.
Wash hand basins shall be in vitreous china complete with chromium plated pillar taps, trapped
waste pipe connection and wall mounting brackets, approx. size 0.55 x 0.4m.
Urinals shall be the wall hung vitreous china with flushing rim type, complete with trapped outlet
and common manual operation type.
Cleaner’s room sinks shall be in fired clayware, cleaner’s sink pattern, approx. size 0.61 x 0.30
x 0.23 deep, complete with wall mounted chromium plated bib taps, hinged bucket grating,
hardwood pad and floor support legs in stainless steel.
6.2.10 Air Conditioning
OFFICES, LOCKERS AND TOILETS
a) The office rooms shall be air-conditioned by packaged air conditioner with air cooled
condensing unit to maintain the specified indoor design conditions.
b) The system shall be completed with ducted supply, return and exhaust filters and
automatic control system.
c) Ventilation of toilets and lockers shall be by motor driven, exhaust air fans. Make-up air
shall be thru louvered or undercut doors.
d) Remote located, individual offices will be air conditioned by split type air conditioning units.
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6.2.11 Finishes
In general the internal finishes shall be as follows:-
Offices F1 W1 C1
Rest Rooms F1 W1 C1
Workshops F3(b) W3
Corridors F1 W1 C1
Pantry F1 W1 C1
First Aid Room F1 W1 C1
Store Rooms F3(a) W1 C3
Electrical Switch room F3(a) W1 C3 A C Plant Room F3(a) W1 C3
Locker F1 W1 C1
Toilet F6(b) W4 C2
Stairs and Landings F1 W1 C1 or C4 (See Note 1)
Laundry Room F1 W1 C1
Server Room F1 W1 C1
Warehouse F3(b) W3
Chemical Store F3(b) W3
NOTE 1:- With non slip nosing.
FLOORS
F1 - Vinyl tiles on screed
F2 - Vinyl tiles on access flooring
F3 (a) - Epoxy paint coating on concrete steel trowel finish
F3 (b) - Epoxy paint coating on concrete hardener
F4 - 500mm x 500mm carpet tiles on screed
F5 - Marble tiles on sand/cement bed
F6 (a) - 300mm x 300mm Non-slip ceramic tiles on sand/cement bed
F6 (b) - 200mm x 200mm Non-slip ceramic tiles on sand/cement bed
NOTE 2
The junction of walls and floors is to be finished by a 100mm minimum height Vinyl skirting
carried out in materials consistent with the surrounding floor finish. Where ceramic tiles are
specified, coved ceramic base shall be used except for the toilets where ceramic tiles shall be
used.
WALLS
W1 - Acrylic emulsion paint on cement plaster
W2 - Acrylic emulsion paint on fair faced concrete
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W3 - “Epoxy paint on cement plasterW4 - Glazed ceramic wall tiles
CEILINGS
C1 - Acoustic mineral fiber tiles with suspended ceiling system
C2 - Moisture resistant, washable surface mineral fiber files with suspended ceiling
system
C3 - Acrylic emulsion paint on fair faced concrete
7. GATE HOUSE
7.1 General Description
The gate houses shall be concrete frame buildings, with an eaves height of 3.0 having a roof
pitch of not less than 6°.
Thermal insulation shall be provided to the walls and roof to ensure the following minimum “U”
values are maintained.
Walls - 0.6W/m2 °C
Roof - 0.45W/m2 °C
The floors shall be reinforced concrete slab with a screed finish.
7.2 Building Components
7.2.1 External Walls
Construction under windows to be a dado wall to be provided at a height of 0.9m framed in
200mm dense concrete blocks plus 50mm rockwool insulation board with 25mm air gap and
100mm internal dense concrete block
Where no windows wall construction to be taken full height.
7.2.2 Internal Walls
Shall be 200mm dense concrete block with plastering and painting.
7.2.3 External Doors
All external doors shall be rated 1 hour fire resistance, with top half double glazed. Construction
shall be from flush finished painted galvanized steel sheet, secured to a fabricated steel section
framework with insulation core.
Doors shall be hung in profiled galvanized steel frames, fixed to walls with galvanized steel lugs.
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Single doors and the actives leaves of double doors shall be provided with self closers, panic
latches and wind hooks.
7.2.4 Internal Doors
Generally doors to be zero fire rated except doors to offices shall be 1 hour fire resistant, solid
core, plywood faced, hardwood lipped all round. Doors shall be hung in profiled galvanized
pressed steel frames.
Doors to offices to have 150mm width x 300mm depth viewing panels with 5mm polished plate
glass.
7.2.5 Windows
External windows shall be aluminum windows to offices, with 14mm thick double glazing,
comprising 2 heat reflective, heat absorbing glass units.
7.2.6 Floors
All area shall be in-situ reinforced concrete slabs with screed and finished in accordance with
clause 7.2.11.
7.2.7 Roof
Roof shall be in situ concrete slab supported on concrete frames. The top surface of this slab
formed to fall and finished with a constant thickness finish comprised of following duplicate
waterproofing system:
- Lightweight Foam Concrete
The lightweight concrete screed shall comprise Type I or Type II cement to ASTM C 150,
foaming emulsion and water. Installed dry density shall be approximately 550 kg/m3, or
recommended by the roofing system VENDOR
- Sand/Cement Screed
20mm sand/cement screed applied under the waterproofing membrane.
- Water Proof Membrane
MAIN CONTRACTOR shall submit the product data sheet of the roof waterproofing
membrane for OWNER approval
- Rigid Insulation
The insulation shall be minimum thickness approx. 50mm rigid rockwool panels, as
recommended by roofing system VENDOR.
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- Slip Membrane
A slip membrane will allow the screed to thermally move on the rigid insulation below and will
allow the rainwater to pass the waterproofing membrane below
- Screed Concrete
40mm concrete screed placed on the slip membrane shall be permanently protecting the
insulation layer.
- Urethan Waterproofing
The water-proofing shall be suitably raised upon the internal face of parapet walls.
7.2.8 Suspended Ceilings
All offices, locker rooms, toilets and ancillary accommodation shall be provided with acoustic
patterned or smooth, washable, moisture proof mineral fiber tiles, all attached to a
support/suspension system, galvanized pressed steel components; screw and plug fixed to the
concrete soffits.
7.2.9 Sanitary Ware
All fittings shall be from white glazed vitreous china, fired clay or stainless steel supplied as
matching suites from a single manufacturer.
W.C.’ s shall be from vitreous china complete with a low level flushing cistern and connecting
fitments including “P” trap.
Wash hand basins shall be in vitreous china complete with chromium plated pillar taps, trapped
waste pipe connection and wall mounting brackets, approx. size 0.55 x 0.4m.
Urinals shall be the wall hung vitreous china with flushing rim type, complete with trapped outlet
and common automatic type, high level flushing cistern, approx. size 0.6 deep x 0.4m wide.
7.2.10 Air Conditioning
OFFICES, LOCKERS AND TOILETS
Remote located, individual offices and ancillary accommodation will be air conditioned by split
air conditioning units.
Ventilation of toilets and lockers shall be by motor driven, exhaust air fans. Make-up air shall be
thru louvered or undercut doors.
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7.2.11 Finishes
In general the internal finishes shall be as follows:-
Offices F1 W1 C1
Staff Rooms/Waiting F1 W1 C1
Guard Room/Reception F1 W1 C1
Corridors F1 W1 C1
Store F3(a) W1 C3
Toilets F6 (b) W4 C2
Server Room F2/3(a) W1 C1
FLOORS
F1 - Vinyl tiles on screed
F2 - Vinyl tiles on access flooring
F3 (a) - Epoxy paint coating on concrete steel trowel finish
F3 (b) - Epoxy paint coating on concrete hardener
F4 - 500mm x 500mm carpet tiles on screed
F5 - Marble tiles on sand/cement bed
F6 (a) - 300mm x 300mm Non-slip ceramic tiles on sand/cement bed
F6 (b) - 200mm x 200mm Non-slip ceramic tiles on sand/cement bed
NOTE 1
The junction of walls and floors is to be finished by a 100mm minimum height Vinyl skirting
carried out in materials consistent with the surrounding floor finish. Where ceramic tiles are
specified, coved ceramic base shall be used except for the toilets where ceramic tiles shall be
used.
WALLS
W1 - Acrylic emulsion paint on cement plaster
W2 - Acrylic emulsion paint on fair faced concrete
W3 - Epoxy paint on cement plaster
W4 - Glazed ceramic wall tiles
CEILINGS
C1 - Acoustic mineral fiber tiles with suspended ceiling system
C2 - Moisture resistant, washable surface mineral fiber tiles with suspended ceiling
system
C3 - Acrylic emulsion paint on fair faced concrete
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8. FIELD OPERATOR HOUSE
8.1 General Description
The Field Operator House shall be a single concrete framed building, with an eaves height of
3.0m.
Thermal insulation shall be provided to the walls and roof to ensure the following minimum “U”
values are maintained.
Walls - 0.6W/m2
°CRoof - 0.45W/m
2 °C
A small section of the roof structure shall be extended to provide an enclosed reinforced
concrete chamber of maximum height 1.8m, complete with blast/suction proof valves, exhaust
air louvers and a fresh air intake stack with chemical filter inside. The entire installation shall be
sized to suit the requirements of the HVAC design.
The buildings shall provide the accommodation as indicated on the above drawing.
8.2 Building Components
8.2.1 External Walls
Construction under windows to be a dado wall to be provided at a height of 0.9m framed in
200mm dense concrete blocks plus 50mm rockwool insulation board with 25mm air gap and
100mm internal dense concrete block
Where no windows wall construction to be taken full height.
8.2.2 Internal Walls
Shall be 200mm dense concrete block with plastering and painting in all areas.
.
8.2.3 General Doors
All external doors shall be rated 1 hour fire resistance. Construction shall be from flush finished
painted galvanized steel sheet, secured to a fabricated steel section framework with insulation
core to give required “U” values.
Doors shall be hung in profiled galvanized steel frames, securely fixed into walls by using
galvanized steel lugs. Fixing of frames shall be such as to ensure solid, void free, water-proof
joints.
Doors shall be hung in profiled galvanized steel frames, fixed to walls with galvanized steel lugs.
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Single doors and the actives leaves of double doors shall be provided with self closers, paniclatches and wind hooks.
All door sizes shall be:-
- Single doors: 0.9m x 2.1m
Equipment doors will be single swing, comprising a single active leaf, and a fixed side panel.
All ironmongery fittings of the same kind shall be of one make and type. They shall be stainless
steel aluminum and shall be fixed with non-corroding screws.
8.2.4 Windows
External windows may be aluminum or steel windows to offices, with 14mm thick double glazing,
comprising 2 reflective, heat absorbing glass units.
8.2.5 Floors
1st floor slab to ancillary accommodation to be reinforced concrete slab with screed and finishes
in accordance with Section 8.2.10
8.2.6 Roofs
Roof shall be in situ concrete slab supported on concrete frames. The top surface of this slab
formed to fall and finished with a constant thickness finish comprised of following duplicate
waterproofing system:-
- Lightweight Foam Concrete
The lightweight concrete screed shall comprise Type I or Type II cement to ASTM C 150,
foaming emulsion and water. Installed dry density shall be approximately 550 kg/m3, or
recommended by the roofing system VENDOR
- Sand/Cement Screed
20mm sand/cement screed applied under the waterproofing membrane.
- Water Proof Membrane
MAIN CONTRACTOR shall submit the product data sheet of the roof waterproofing
membrane for OWNER approval
- Rigid Insulation
The insulation shall be minimum thickness approx. 50mm rigid rockwool panels, as
recommended by roofing system VENDOR.
- Slip Membrane
A slip membrane will allow the screed to thermally move on the rigid insulation below and
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will allow the rainwater to pass the waterproofing membrane below
- Screed Concrete
40mm concrete screed placed on the slip membrane shall be permanently protect the
insulation layer.
- Urethan Waterproofing
8.2.7 Suspended Ceilings
All areas occupied by personnel to be provided with acoustic patterned or smooth mineral fiber
tile. Toilet area to be provided with washable, moisture proof mineral fiber tiles. All ceiling tilesshall be laid on exposed grid type suspension system
8.2.8 Sanitary Ware
All fittings shall be from white glazed vitreous china, fired clay or stainless steel supplied as
matching suites from a single manufacturer.
W.C. ‘s shall be from vitreous china complete with a low level flushing cistern and connecting
fitments including “P” trap.
Wash hand basins shall be in vitreous china complete with chromium plated pillar taps, trapped
waste pipe connection and wall mounting brackets, approx. size 0.55 x 0.4m.
Urinals shall be the wall hung vitreous china with flushing rim type, complete with trapped outlet
and common manual operation type.
Cleaner’s room sinks shall be in fired clayware, cleaner’s sink pattern, approx. size 0.61 x 0.30
x 0.23 deep, complete with wall mounted chromium plated bib taps, hinged bucket grating,
hardwood pad and floor support legs in stainless steel.
8.2.9 Air Conditioning
OFFICES AND TOILETS
A split air conditioning system with air cooled condensing units shall maintain the specified
indoor design conditions, each unit completed with individual automatic controls.
Ventilation of toilets and lockers shall be by motor driven, exhaust air fans. Make-up air shall be
thru louvered or undercut doors.
8.2.10 Finishes
In general the internal finishes shall be as follows:-
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Offices F1 W1 C1
Pantry F1 W1 C1
Toilets F6 (b) W4 C2
Corridor F1 W1 C1
FLOORS
F1 - Vinyl tiles on screed
F2 - Vinyl tiles on access flooring
F3 (a) - Epoxy paint coating on concrete steel trowel finish
F3 (b) - Epoxy paint coating on concrete hardenerF4 - 500mm x 500mm carpet tiles on screed
F5 - Marble tiles on sand/cement bed
F6 (a) - 300mm x 300mm Non-slip ceramic tiles on sand/cement bed
F6 (b) - 200mm x 200mm Non-slip ceramic tiles on sand/cement bed
NOTE 1
The junction of walls and floors is to be finished by a 100mm minimum height Vinyl skirting
carried out in materials consistent with the surrounding floor finish.
Where ceramic tiles are specified, coved ceramic base shall be used except for the toiletswhere ceramic tiles shall be used.
WALLS
W1 - Acrylic emulsion paint on cement plaster
W2 - Acrylic emulsion paint on fair faced concrete
W3 - Epoxy paint on cement plaster
W4 - Glazed ceramic wall tiles
CEILINGS
C1 - Acoustic mineral fiber tiles with suspended ceiling system
C2 - Moisture resistant, washable surface mineral fiber tiles with suspended ceiling
system
C3 - Acrylic emulsion paint on fair faced concrete
9. LABORATORY BUILDING
9.1 General Description
Laboratory building shall be a single storey concrete frame, structure with dense concrete block.
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Thermal insulation shall be provided to all surfaces of the external envelope to ensure that the
following minimum “U” values are maintained:
Walls - 0.60W/m2 °C
Roofs - 0.45W/m2 °C
Each area shall be divided or fire compartmented by full height walls to provide the following
areas:-
LABORATORY BUILDING (1ST FLOOR LEVEL)
- Manager Office
- Shift Office
- Chemist
- Technician
- Library
- Meeting Room
- Mess Room
- Wet Laboratory and Catalyst
- Mercury
- GC Laboratory Room
- Gas Shelter
- Hydrocarbon Laboratory
- Sample Reception
- Atomic Absorption Spectrometer (AAS)
- Restrained Sample
- Chemical Store
- Glass Ware Room
- Glass Ware Store Room
- Toilet
- Electrical Control Room
9.2 Building Components
9.2.1 External Walls
The External Walls shall be of dense concrete block construction to give 0.6W/m2 °C “U” value.
Wall thickness shall be designed to meet slenderness and stability requirements.
Part of external walls such as the wall of the gas shelter shall be concrete wall for the
installation of laboratory equipment and/or gas tubing manifold according to the requirement of
the laboratory equipment.
9.2.2 Internal Walls
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Shall be 200mm dense concrete block with plastering and painting in laboratory areas and
enclosing walls of office areas, staircase and corridors. Wall bracing shall be provided if
necessary to meet slenderness requirements.
Division walls of offices and laboratories at 1st floor level shall be lightweight partitioning to a
nominal thickness of 100mm from a steel stud and plasterboard system, comprising of two
12mm gypsum wall boards secured to each face of galvanized metal studs, at 600 centers.
9.2.3 External Doors
Doors to be flush finished painted galvanized steel sheet secured to a fabricated steel sectionframework, with insulation core to give “U” value.
All external doors shall be rated 1 hour fire resistance. Construction shall be from flush finished
painted galvanized steel sheet, secured to a fabricated steel section framework – with insulation
core.
Doors shall be hung in profiled galvanized steel frames, fixed to walls with galvanized steel lugs.
Single doors and the actives leaves of double doors shall be provided with self closers, panic
latches and wind hooks.
All doors are to be single swing opening outwards to the following sizes:-
- Single Doors : 0.9m x 2.1m
- First Aid Access : 1.5m x 2.1m
- Equipment Doors : 1.8m minimum x 2.5m depending on the largest piece of equipment
Equipment doors shall be single swing, comprising a single active leaf, and a fixed side panel.
Frames shall be provided with a removable transom that will enable fixing in of an over doorpanel.
All ironmongery fittings of the same kind shall be of one make and type. They shall be stainless
steel aluminum and shall be fixed with non-corroding screws.
9.2.4 Internal Doors
Doors to offices shall be 0.5 hour fire resistant, solid core, p
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