9. Combined Building Services
9.1 Legend
Drainage
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vent pipe |
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flat grating rain water outlet / floor drain |
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soil waste pipe |
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waste pipe |
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rainwater pipe |
Electrical Services
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recessed mount speaker unit |
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recessed typedown light c/w 1x18W PLC lamp, high pripority aluminium and anodized reflector, with matt silvery finishing control gearsm capacitors and all necessary accessories |
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track light c/w ceiling mounted light track, 120W par 36 lamp, UVA reduction filter, silver mirror reflector, white-coloured housing, integral 2A fuse, protection glass and all necessary accessories |
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1200mm ceiling mounted fluorescent lighting fitting c/w 1x16W energy saving tubes, control gears HPF capacitor and all necessary accessories |
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same as the above c/w 2z16W energy saving tubes |
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exit sign plate, maintained type, c/w 1x18W fluorescent tube, clear aracrylic sheet, integral control gear and all necessary accessories |
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cable link box |
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10A 1-way SP lightings switch at 1350 AFFLunless otherwise specified ( n stands for number of switches ) |
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SPN/TPN isolator wall mounted type |
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13A single socket outlet at 300 AFFL unless otherwise specified |
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junction box for speaker at 2900 AFFL |
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junction box for slide projector |
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junction box for video projectror at false ceiling |
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junction box for microphone outlet at 300 AFFL |
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junction box for theatre commander at floor level |
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13A twin socket outlet at 300 AFFL unless otherwise specified |
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13A switch fused connection unit above false ceiling unless otherwise specified |
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1 no. of 25mm concealed conduit inside false ceiling unless otherwise specified |
Fire Services
Wet system
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pendent sprinkler head under structure slab ( in wet system ) |
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pendent sprinkler head under structure slab ( in dry system ) |
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pendent concealed type sprinkler head ( in wet system ) |
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pendent concealed type sprinkler head ( in dry system ) |
Dry system
 |
200mm weatherproof fire alarm bell |
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smoke detector under structure slab |
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heat detector under structure slab |
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fixed fire pump control panel |
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f.s. transfer pump control panel |
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sprinkler pump control panel |
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dry contracts for generator running / failure indication ( by electrical sub-contractors ) |
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audible / visual warning unit |
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fixed fire pump |
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f.s. transfer pump |
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sprinkler jockey pump |
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f.s. jockey pump |
Mechanical Services
Air side legend
 |
supply / primary / fresh air duct to / from above |
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duct set up |
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duct set down |
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air filter |
 |
linear grille / diffuser |
Water side legend
 |
water pump |
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duct electric heater |
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axial fan / in-line centrifugal |
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propeller fan |
 |
motor control centre |
Electrical legend
 |
13A fused spur unit sub-contractor |
Air side abbreviations
 |
exhaust air duct |
 |
supply air duct |
 |
return air duct |
 |
exhaust air fan |
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transfer air fan |
Plumbling Services
Faucet
 |
pillar tap |
Piping
 |
city water pipe |
 |
hot water pipe |
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hot water return pipe |
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flush water pipe |
 |
vent pipe |
Fittings
 |
water meter |
 |
gate valve |
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drain valve |
 |
rail valve |
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Y-type strainer |
General abbreviations
 |
from above |
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from below |
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to above |
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to below |
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high level |
 |
lown level |
