Building Utilities Flashcards
What is the pipe color for ammonia?
Yellow
Tube made of plastic material and color black. The cross sectional shape is normally oval and is denoted
by its outside diameter.
Polybutylene
What is the minimum trap diameter (mm) for drinking fountains?
31
A type of faucet that operates with a round tapering plug to fit a metal sheet.
Round cock
Any joint obtained by joining of metal parts with alloys and melt at temperature higher than 449 degrees
centigrade but lower than the melting tamp of the parts to be joined.
Blazed joint
A rubber or plastic washer inserted in a hole in a metal part to prevent grounding of wire passing through
the hole.
grommet
A pipe or duct fitting having several outlets for making multiple connections.
Bonet
A dry-pipe sprinkler system through which after flow is controlled by a valve operated by fire detection
devices more sensitive than those in the sprinkler heads. It is used when an accidental discharge would
damage valuable materials.
Preaction System
A new air-conditioning system which answers the need to respond to changes in room cooling capacities
of controlling air flow.
VRV
The specification on the electric wire XHHW refers to:
Moisture and Heat Resistant Cross Linked Thermosetting Polyethylene
What is the ratio pf water closet for male dormitories?
1:8
A fire involving flammable liquid, as gasoline, oil, and grease, which must be extinguished by excluding
air and inhibiting the release of incombustible vapors
Class B Fire
The minimum allowable clearance from the highest point of the roof to the service drop conductor as per
National Building Code:
2.50 m
What is the required number of number of water supply fixture unit for flush tank water closets (private /
public use)?
3/5
What is the method of treatment when there are presence of calcium and magnesium in the water?
Addition of water softeners
A water supply system in which water is distributed from a water main or an enclosed storage tank under
pressure from compressed air.
Pneumatic water supply
Which of the following does not generally describe a vitrified clay pipe?
a. Brittle
b. One of the oldest materials used for sewer line
c. Highly resistant to most acids
d. Cheapest
Cheapest
A Valve outlet of a boiler that permits discharge of accumulated sediment.
Boiler-blow-off
For an apartment building, how many gallons of hot water are needed per person?
8
The use of extreme pressure so as not to affect the existing foundations in the vicinity.
Jetted Well
It is the minimum distance required of waterline to the cistern tank.
15 m
What is the minimum size of the trap for a bidet?
a. 2” c. 3”
b. 2 1⁄2” d. none of the above
none of the above
2 diameter
It is a metallic sleeved caulked or joined to an opening in a pipe into which a plug is screwed that can be
removed for cleaning or examining the interior of the pipe.
Ferrule
What is the maximum size of cleanout in millimeters if it has a front clearance of not less than 305 mm?
51
