Building Utilities Flashcards
The amount of heat which is absorbed or evolved in changing the state of a substance without changing its temperature.
Latent Heat
Minimum length of a septic tank.
1.50 mts.
Minimum capacity, in cubic meters, of the secondary compartment of a septic tank.
1 cum.
Wooden septic tanks are allowed, true or false.
FALSE
Minimum distance of a water supply well from a disposal field.
30.50 mts.
Maximum height of a water seal for each fixture trap.
102 mm.
Minimum extension of the VSTR above an openable window, door opening, air intake, or vent shaft.
0.90 mtr.
Required number of water closets for females for an auditorium serving 16-35.
3
Required number of water closets for females for a theater serving 51-100.
4
Two types of passenger elevator.
Electric and Hydraulic
TW in electrical wire specification means.
Moisture resistant, in wet and dry location
Collection line of a plumbing system is sometimes referred to as.
House Drain
XHHN in wire specification means.
Moisture and Heat Resistant-Cross-Linked Thermosetting
The other type of flame detector other than the ultraviolet type.
Infra Red
Another name for distribution panel.
Power Panel
Standard size of wire for a switch line.
No. 14
A controller sensitive to the degree of moisture in the air.
Humidistat
A stop valve placed in the service pipe close to the connection at the water main.
Corporation Stop
Length along the centerline of the pipe and fitting.
Developed Length
Component of fire extinguisher.
Carbon Monoxide
An Instrument which responds to changes in temperature, and directly or indirectly controls temperature.
Thermostat
A machine that converts mechanical energy into electrical energy, a generator of alternating current.
Alternator
A type of pipe fitting for a Yoke Vent.
1/8 Bend
Minimum fixture supply pipe diameter for tank type water closet.
3/8”
Term applied to the interconnection of the same fixtures in one soil or waste branch with one branch vent.
Battery of Fixtures
Minimum size of a wet standpipe for a riser of more than 15 meters from the source.
4” (102mm)
Minimum height of a branch vent above the fixture it is venting.
6” (150mm)
The overhead service conductors from the last pole or other aerial support to and including splices, if any, connecting to the service entrance conductors at the building.
Service Drop
Distance sound travels during each cycle of vibration.
Wavelength
Acoustical phenomenon which causes sound wave to be bent or scattered around.
Sound Diffraction
Sound sensation in a single frequency.
Pure Tone
The luminous intensity of light is expressed in ___.
Candela
A specially designed system of waste piping embodying the horizontal wet venting of one or more sinks or floor drains by means of a common waste and vent pipe adequately sized to provide free movement of air above the flow line of the drain.
Combination Waste and Vent System
During elevator emergency, to rescue passengers, this part of the elevator is used to open the doors from the outside.
Outside Door Latch
Receptacles intended to receive and discharge water, water-carried waste into a drainage system with which they are connected.
Fixture
A vent pipe connected to a vent stack.
Circuit Vent
Bets type of fire detection that can detect fire during the incipient stage.
Ionization
A faucet fitted with a nozzle curving downward used as a draw-off tap
Bibbcock
A pipe fitting shaped like “S”
Double Bend
Ratio of water closets for male population for elementary and secondary school.
(1:30)
Ratio of water closets for female population for Principal worship Places
(1:75)
Minimum head of water, in meters, required for each section of plumbing for water test.
3
Consist of a body, a checking member, and an atmospheric opening.
Atmospheric Vacuum Breaker
Minimum distance of water pipings from any regulating equipment, water heater, conditioning tanks, and similar equipment requiring union fittings.
300mm
True or False, 60” branches or offsets may be used only when installed in a true vertical position.
TRUE
Minimum clearance in front of any cleanout in meters for pipes larger that 51 mm. diameter
0.45 mtr. / 450mm
Maximum length of any branch requiring separate venting.
4.60 mts.
Minimum vertical distance of VSTR from any roofdeck where it is protruded.
2.10 mts.
Minimum number of stories served by a waste stack requiring parallel venstack.
10
A unit of illumination equivalent to 1 lumen per square foot.
Foot-candle
The material used for filament in an incandescent bulb.
Tungsten
An air-operated device used to open or close a damper or valve.
Air Motor
Vertical tracks that serves as a guide for the car and the counterweight.
Guiderails
Under NBC, the minimum width between balusters in an escalator.
558 mm
A private telephone system that interconnects with public telephone systems.
PABX
The rate of flow of sound energy.
Sound Intensity
A type of High-Intensity-Discharge Lamp (HID)
High-Pressure-Sodium (HPS)
Light originating from sources not facing each other, as from windows in adjacent walls.
Cross Light
A louvered construction divided into cell-like areas and used for redirecting the light emitted by an overhead source.
Egg crate
The transmission of heat energy from one place to another by circulatory movement of a mass fluid.
Convection
What type of sound absorbent is best for lower band frequencies.
Porous Absorbents
Water distribution system which constantly rely its pressure from the main water pipe applied only if the highest fixture is supplied continously with the flow rate and minimum required working pressure.
Upfeed System/ Direct Method
What mechanical equipment, coupled with a central air-conditioning system, is used to dehumidify and cool the air stream injected to a conditioned space.
Fan Coil Unit
A type of perimeter detector which detects object in heat range of body temperatures.
Passive Infrared
Women’s Urinal fixture.
Washdown
This type of water closet is similar to that of the siphon-jet except that it has a similar trap passageway and smaller water surface area, moderately noisy.
Reverse Trap
A water closet that is sanitary, efficient and very quiet. Water enters through the rim and through the down leg.
Siphon Jet
The concussion and banging noise that results when a volume of water moving in a pipe suddenly stops or loses momentum.
Water Hammer
A valve closed by a disk seating on an opening in an internal wall.
Globe valve
The interior top surface of a pipe.
Crown
This type of perimeter detector uses bith the Passive infrared and Ultrasonic or Microwave system
Passive Infrared with Ultrasonic (or Microwave)
A high density discharge lamp in which the light is produced by the radiation from a mixture of a metallic vapor, similar to that of a mercury lamp in construction.
Metal Halide Lamp
A type of lamp generally used for roadways and sidewalks, uses sodium gas.
High Pressure Sodium (HPS)
In elevator, it detects the obstacles during the door closing, and reopens the door if there is something. Photocell can be used together with this.
Safety Shoe
In elevator, it protects the equipment from over current.
Circuit Breaker
In escalators, this is located at the bottom truss of the escalator and provided with on and off positions to stop or prevents the escalator from starting during maintenance service.
Disconnect Switch
This switch cuts off all current supply to the escalator for inspection, maintenance or repairs.
Knife Switch
The cooling effect ovtained when 1 ton of ice at 32 °F (0°c) melts to water at the same temperature in 24 hrs. (equivalent to 12,000 btu/hr.)
Ton of Refrigeration
A pit for the reception or detention for sewage
Cesspool
An outhouse or structure used for the deposition of excrement
Privy
A pipe or conduit for carrying sewage and liquid waste
Sewer
In plumbing the vent pipe which is connected to the crown.
Crown Weir
On a theatre stage, a master switch that distinguishes all stage lights simultaneously.
Blackout Switch
The luminous intensity of alight source, expressed in candelas.
Candlepower
In an electric circuit, a current that flows in one direction only
Direct Current
A system of devices, usually installed below ground level, to scatter or spray water droplets over a lawn, golf course, or the like.
Lawn Sprinkler System
Minimum liquid depth for a septic tank.
60 cms.
Minimum dimension of a manhole access to a septic tank.
508 mm.
Minimum distance of a water supply well from a septic tank.
15.20 mts.
Minimum Gauge of galvanized sheet used for downspouts.
26
Maximum length of the tailpiece from any fixture.
60 cms.
Minimum trap diameter for a bathtub
38 mm. (11/2”)
Required number of water closets for males for an auditorium serving 16-35.
2
Classifications of copper pipes.
Rigid and Flexible
Minimum elevator width of single slide door elevator for small commercial or residential building.
0.60 mtr.
Another name for passenger elevator.
Lift
Maximum height of a dumbwaiter.
1.20 mts.
Standard length of an electrical metal conduit.
10’
PABX or PBX means.
Pvt. Automatic Branch Exchange
Type of plastic pipe other than polyvinyl chloride and polybutylene.
Polyethylene
A device for converting alternating current to direct current.
Rectifier
Another name for Humidistat.
Hygrostat
