The amount of heat which is absorbed or evolved in changing the state of a substance

Latent Heat
Heat
without changing its temperature.
A system of devices, usually installed below ground level, to scatter or spray water
Lawn Sprinkler System
System
droplets over a lawn, golf course, or the like.
Minimum width of a septic tank. 90 cms.
Minimum length of a septic tank. 1.50 mts.
Minimum liquid depth for a septic tank. 60 cms.
Maximum liquid depth for septic tank. 1.80 mts.
Minimum capacity, in cubic meters, of the secondary compartment of a septic tank. 1 cum.
Minimum dimension of a manhole access to a septic tank. 508 mm.
Minimum length of the secondary compartment of a septic tank with a capacity of
1.50 mts.
more than 6 cubic meters.
Wooden septic tanks are allowed, true or false. FALSE
Minimum distance of a water supply well from a septic tank. 15.20 mts.
Minimum distance of a water supply well from a seepage pit or cesspool. 45.70 mts.
Minimum distance of a water supply well from a dis posal field. 30.50 mts.
Minimum Gauge of galvanized sheet used for downspouts. 26
Minimum height of a water seal for each fixture trap. 51 mm.
Maximum height of a water seal for each fixture tr ap. 102 mm.
Maximum length of the tailpiece from any fixture. 60 cms.
Minimum extension of the VSTR above the roof. 15 cms.
Minimum extension of the VSTR above a n openable window, door opening, air intake,
0.90 mtr.
or vent shaft.
Minimum trap diameter for a bathtub 38 mm. (11/2")
Minimum trap diameter for a shower stall. 51 mm. (2")
Required number of water closets for females for an auditorium serving 16-35. 3
Required number of water closets for males for an auditorium serving 16-35. 2
Required number of water closets for females for a theater serving 51-100. 4
Classifications of copper pipes. Rigid and Flexible
A rough or sharp edge left on metal by a cutting tool. Burr
Two types of passenger elevator. Electric and Hydraulic
Minimum elevator width of single slide door elevator for small commercial or
0.60 mtr.
residential building.
A device that is basically a double throw switch of generally 3-pole connection that will
 Auto mat ic Tran sfer Sw it ch
automatically transfer the power from the standby generator to the building circuitry
(ATS)
during electrical power failure.
Moisture resistant, in wet
TW in electrical wire specification means.
and dry location
Another name for passenger elevator. Lift
The minimum face to face distance between elevators in three and four car grouping. 2 mts.
Collection line of a plumbing system is sometimes referred to as. House Drain
Maximum height of a dumbwaiter. 1.20 mts.
A type of lighting that provides illumination to special objects like sculptures, flo wer
Specific Lighting
arrangements, etc.
Moisture and Heat
XHHN in wire specification means. Resistant- Cross-Linked
Thermosetting
Standard length of an electrical metal conduit. 10'
An assembly consisting of a pulley wheel, side plates, shaft, and bearings over which
Sheave
a cable or roped is passed.
The other type of flame detector other than the ultraviolet type. Infra Red
Pvt. Automatic Branch
PABX or PBX means.
Exchange
Farad is the unit capacity of a ___. Capacitor
Another name for distribution panel. Power Panel
Type of plastic pipe other than polyvinyl chloride and polybutylene. Polyethylene
Standard size of wire for a circuit line. No. 12
A device for converting alternating current to direct current. Rectifier
Another name for a Rectifier. D.C. Generator
A controller sensitive to the degree of moisture in the air. Humidistat
Another name for Humidistat. Hygrostat
Consist of a flyball or flyweight device designed to stop an elevator. Governor
A stop valve placed in the service pipe close to the connection at the water main. Corporation Stop
A vent with a function to provide circulation if air between drainage and vent system. Relief Vent
Flange used on a pipe to cover a hole or opening in a floor or wall which the pipe
Escutcheon
pass.
Length along the centerline of the pipe and fitting. Developed Length
A valve used in a flush tank controlling the flushing of fixture. Flush Valve
Any liquid waste containing animal or vegetable matter in suspension or solution. Sewage
Component of fire extinguisher. Carbon Monoxide
Interrelationship between value of voltage and current with the same frequency. Phase
Descriptive of any material such as synthetic resin which hardens when heated or
Thermosetting
cured, and does not soften when reheated.
An Instrument which responds to changes in temperature, and directly or indirectly
Thermostat
controls temperature.
Thin sheets that are used for controlling heat in drywall construction. Rigid Board Insulation
Conveys storm water and terminates into a natural drainage such as lakes or r ivers. Strom Sewer
A machine that converts mechanical energy into electrical energy, a generator of
 Al ter nat or
alternating current.
Freon in air-con must be compressed and liquefied in order to absorb ___. Heat
Standard size of a wet standpipe outlet for each floor. 1 1/2" (38mm)
A type of pipe fitting for a Yoke Vent. 1/8 Bend
A device installed on an electric water heater used to detect the working temperature
Thermostat
to activate a switch.
Minimum size of trap or branch for a bidet. 1 1/2"
Minimum fixture supply pipe diameter for tank type water closet. 3/8"
True or false, 1 3/4" diameter is 'not' a commercial size of G.I. Pipe for water supply. TRUE
True or false, 3" diameter is 'not' a commercial size of G.I. Pipe for water supply. FALSE
Term applied to the interconnection of the same fixtures in one soil or waste branch
Battery of Fixtures
with one branch vent.
A single vent that ventilates multiple traps in the case of a back to back vent. Common Vent
Minimum size of a standpipe for a building in which the highest outlet is 23 meters or
4" (102mm)
less from the fire service connection.
Minimum size of a wet standpipe for a riser of more than 15 meters from the source. 4" (102mm)
Single lever valves used in kitchen sink and lavatory faucets or at shower valves
Ball Valve
works by the principle of a ___.
Treats hard water. Zeolite
Minimum height of a branch vent above the fixture it is venting. 6" (150mm)
Minimum wire size in square millimeter for a branch circuit with a 30 ampere rating
5.5 sqmm
using Type THW stranded copper conductor in a raceway.
Standard frequency of power supplied by the local power utility company like Meralco. 60 Cycles
The overhead service conductors from the last pole or other aerial support to and
Service Drop
including splices, if any, connecting to the service entrance conductors at the building.
Unit of loudness level. Phon
The process of dissipating sound energy by converting it to heat. Sound Absorption
Distance sound travels during each cycle of vibration. Wavelength
The reduction in the intensity or in the sound pressure level of sound which is
Sound Attenuation
transmitted from one point to another.
Unit of sound absorption equivalent to 1 square foot of perfectly absorptive material. Sabin
Acoustical phenomenon which causes sound wave to be bent or scattered around. Sound Diffraction
Minimum sound pressure level that is capable of being detected by the human ear. Threshold of Audibility
Fluctuation in pressure, a particle displacement in an elastic medium. Sound
Sound sensation in a single frequency. Pure Tone
Wave produced by a pure tone. Sine Wave
Synonymous with a lighting fixture. Luminaire
The luminous intensity of light is expressed in ___. Candela
Plumbarius
In Latin, it means 'lead'. Plumbum
A specially designed system of waste piping embodying the horizontal wet venting of
Combination Waste
one or more sinks or floor drains by means of a common waste and vent pipe
and Vent system
adequately sized to provide free movement of air above the flow line of the drain.
Vertical flow of air used to separate different functions of spaces.  Air c ur tai n
Type of lighting dealing with relatively large area lighting. General Lighti ng
During elevator emergency, to rescue passengers, this part of the elevator is used to
Outside Door Latch
open the doors from the outside.
A device which extends across at least 1/2 t he width of each door leaf which will open
Panic Bar
if subjected to pressure.
Sanitary sewage from buildings shall be discharged directly to the nearest ___. Sanitary Sewer Main
Receptacles intended to receive and discharge water, water-carried waste into a
Fixture
drainage system with which they are connected.
The simplest type of building automation system. Telecommunication System
Standard size of an outlet for a dry standpipe located at each floor. 2 1/2" (64mm)
A vent pipe connected to a vent stack. Circuit Vent
A vent pipe connected to a stack vent. Loop Vent
Instrument used for measuring atmospheric pressure. Barometer
Bets type of fire detection that can detect fire during the incipient stage. Ionization
Condensing unit is a part of a ___. Refrigeration
A fire detector installed in a fire alarm system which uses low melting point solders or Fixed Temperature
metal that expands when exposed to heat to detect a fire. Heat Detector
A faucet fitted with a nozzle curving downward used as a draw-off tap. Bibbcock
Heat rating for a fixed temperature heat detector. 135-197˚F
Reference in measuring the depth of a trap seal of a trap. Top Dip to Crown Weir
A pipe fitting shaped like 'S'. Double Bend
Minimum size of trap and waste branch for a shower stall. 2"
Minimum size of trap and waste branch for a pedestal urinal. 3"
Ratio of water closets for male population for elementary and secondary school. (1:30)
Ratio of water closets for female population for elementary and secondary school. (1:25)
Ratio of urinals for elementary school. (1:75)
Ratio of water closets for female population for Principal Worship Places. (1:75)
Minimum required number of water closets for female for office and public buildings
4
serving 55 occupants for employees.
Where there is exposure to skin contamination due to poisonous materials, what is
(1:5)
the ratio of lavatory to number of occupants.
Minimum head of water, in meters, required for each section of plumbing for wat er
3
test.
How many days, at least, shall be given before any plumbing work inspection is done
3
after written notice for inspection.
Minimum time, in minutes, required for water to stay in the system or pipes for a
15 minutes
water test without any leaks to satisfy said testing.
 Atmosp her ic Vacuum
Consist of a body, a checking member, and an atmospheric opening.
Breaker
Minimum lead content in percent for pipes and fittings safe for humans. 8%
Minimum vertical distance from the bottom of water pipes to the top of sewer or drain
300 mm
pipe if laid in the same t rench on top of the other.
Minimum distance of water pipings from any regulating equipment, water heater,
300 mm
conditioning tanks, and similar equipment requiring union fittings.
Maximum spacing of pipe supports at intervals. 4'
Equivalent of 1/6 bend in degrees. 60˚

True or false, 60˚ branches or offsets may be used only when installed in a true TRUE
vertical position.
Cleanouts may be omitted on a horizontal drain less than 1.5 meters in length unless
TRUE
such line is serving sinks or urinals, true or false.
Minimum clearance in front of any cleanout in meters for pipes 51mm or less in
0.305 mtr. / 305 mm
diameter.
Minimum clearance in front of any cleanout in meters for pipes larger than 51 mm.
0.45 mtr. / 450 mm
Dia.
Maximum distance of any underfloor cleanout from any access door, crawl space, or
6.10 mts.
crawl hole.
Maximum length of a tailpiece. 600 mm
Minimum length of any branch requiring separate venting. 4.60 mts.
True or false, no galvanized wrought iron or galvanized steel pipe shall be used
TRUE
underground and shall be kept at least 15 cms above ground.
Minimum extension of a vent stack through roof above the roof. 150 mm / 15 cms.
Minimum extension of a vent stack through roof above any other vertical surface. 300 mm
Minimum vertical distance of VSTR from above of any openable window or opening. 0.90 mtr.
Minimum vertical extension of VSTR from any roofdeck where it is protruded. 2.10 mts.
Minimum horizontal distance of any VSTR from a roofdeck used for other purposes
3.00 mts.
aside from protection from weather.
Minimum number of stories served by a waste stack requiring a parallel ventstack. 10
The rate of flow of l ight through a surface. Luminous Flux
The luminous intensity of any surface in a given direction per unit of projected area. Luminance
A unit of illumination equivalent to 1 lumen per square foot. Foot-Candle
A unit of illumination equivalent to 1 lumen per square meter. Lux
Type of lighting system where 90-100% of light output is directed to the ceiling and
Indirect Lighting
upper walls of the room.
The material used for filament in an incandescent bulb. Tungsten
The equivalent of filament in a fluorescent lamp. Cathode
An automatic device used for converting high, fluctuating inlet water pressure to a
Pressure Regulating Valve
lower constant pressure.
An air-operated device used to open or close a damper or valve.  Air Mo to r
In theater stage house, a weight usually of iron or s and used to balance suspended
Counterweight
scenery, or the like.
On elevators, a gear-driven machine having a drum to which the wire r opes that hoist
Winding-Drum Machine
the car are fastened, and on which they wind.
Vertical tracks that serves as a guide for the car and the counterweight. Guiderails
Under NBC, the clearance between the underside of the car and the bottom of the pit
600 mm
shall not be less than ___.
Under NBC, the minimum width between balusters in an escalator. 558 mm
Under NBC, the maximum rated speed of an escalator along the angle of travel. 38 Meters/Min
The effective room temperature in air -conditioning. 68-74 ˚F
A private telephone system that interconnects with public telephone systems. PABX
Resistance in alternating current system. Impedance
The reciprocal of conductance. Resistance
The rate of flow of sound energy Sound Intensity
Lighting used primarily to draw attention to particular points of interest.  Accen t L ig ht in g
A means of producing light from gaseous discharge. Fluorescense
High-Pressure-Sodium
A type of High-Intensity-Discharge lamp (HID).
(HPS)
Sound system input device that reacts to and converts variable sound pressure into
Microphone
variable electrical current.
A rate of rise type detector. Thermal Detector
Light originating from sources not facing each other, as from windows in adjacent
Cross Light
walls.
The process of removing calcium and magnesium deposits in water. Softening
A lighting unit consisting of one or more electrical lamps. Luminaire
A louvered construction divided into cell-like areas and used for redirecting the light
Eggcrate
emitted by an overhead source.
A graph used in air-conditioning and showing the properties of air-system mixtures. Psychrometric Chart
Heat that raises air temperature. Sensible Heat
The transmission of heat energy from one place to another by circulatory movement
Convection
of a mass of fluid.
A lamp designed to project and diffuse a uniform level of illumination over a large
Floodlight
area.
Limit Controls and
In boilers, they function only when exceeds prescribed unsafe operating conditions.
Interlocks
What type of sound absorbent is best for lower band frequencies. Porous Absorbents
The bending of sound wave when traveling forward changes direction as it passes
Refraction
through different densities.
True or false, number of fixture unit is one parameter in sizing a drainage pipe. TRUE
Water distribution system which constantly rely its pressure from the main w ater pipe
Upfeed System / Direct
applied only if the highest fixture is supplied continuously with the flow rate and
Method
minimum required working pressure.

What combination of pipe fittings is installed at the base of a soil stack? Wye and 1/8 Bend

What is the rating index of an air -conditioning/refrigeration system which rates the Energy Efficiency Rating
unit for the number of BTU's of heat r emoved per watt of electrical input energy? (EER)
What mechanical equipment, coupled with a central air -conditioning system, is used
Fan Coil Unit
to dehumidify and cool the air stream injected to a conditioned space.
A rigid metal housing for a group of heavy conductors insulated from each other and
Busway
the enclosure, also called Busduct.
A heavy conductor, usually in the form of a solid copper bar, used for collecting,
Bus
carrying, and distributing large electric currents, also called a busbar.
An approved assembly of insulated conductors with fitting and conductor terminations
in completely enclosed ventilated protective metal housing where the assembly is Busway
designed to carry fault current and to withstand the magnetic forces of such current.
A type of perimeter detector which detects object in heat range of body temperature. Passive Infrared
A type of perimeter detector which detects interruption of light beam. Light Beam
A type of perimeter detector which detects change in sound wave pattern. Ultrasonic
Women's urinal fixture. Washdown
True or false, brass and cast iron body cleanouts shall not be used as a reducer or
TRUE
adapter.
A box with a blank cover which serves the purpose of joining one different runs of
raceways or cables and provided with sufficient space for connection and branching of Pull Box
the enclosed conductors.
A type of water closet t hat is least efficient, subject to clogging, noisy, and use a
Washdown (WD)
simple washout action through a small irregular passageway.
This type of water closet is similar to that of the siphon-jet except that it has a
Reverse Trap (RT)
smaller trap passageway and smaller water surface area, moderately noisy.
A type of water closet t hat is noisy but highly efficient. Strong jet into up leg forces
Blowout (BO)
contents out. Use only with flush valve, requires higher pressure.
Water closet that is quiet, extremely sanitary, water is directed through t he rim. It
Sipho n Vortex (SV)
scours bowl, folds over into jet; siphon.
A water closet that is sanitary, efficient, and very quiet. Water enters through the rim
Siphon Jet (SJ)
and through the down leg.
A toilet bowl similar to the siphon-jet, but having the flushing water directed t o the
Sipho n Vortex (SV)
rim to create circular motion or vortex which scours the bowl.
A toilet bowl in which the flushing water enters through the rim and a siphonic action
Siphon Jet (SJ)
initiated by a water jet draws the contents of the bowl through the trapway.
A water closet similar to t hat of the siphon jet but with a smaller water surface and
Reverse Trap (RT)
trapway.
This type of water closet is prohibited by some health codes. Washdown (WD)
The concussion and banging noise that results when a volume of water moving in a
Water Hammer
pipe suddenly stops or loses momentum.
The length of a pipeline measured along the centerline of the pipe and pipe fit tings. Developed Length
A shutoff valve closed by lowering a wedge-shaped gate across the passage. Gate Valve
A valve closed by a disk seating on an opening in an internal wall. Globe Valve
Liquid sewage that has been treated in a septic tank or sewage treatment plant. Effluent
The centerline of pipe. Spring Line
The interior top surface of a pipe. Crown
The interior bottom surface of a pipe. Invert
A type of perimeter detector which is subject to false alarm from aircraft radar and
from movement outside building through window, wood doors, and the like. It uses Microwave
radio waves.
This type of perimeter detector uses both the Passive infrared and Ultrasonic or Passive Infrared with
Microwave system. Ultrasonic (or Microwave)
This type of perimeter detector detects a change in capacitance of t he area covered,
Proximity / Capacitance
caused by intrusion.
Color code for pipes containing acid. Black
A high intensity discharge lamp in which the light is produced by the radiation from a
Metal Halid e Lamp
mixture of a metallic vapor, similar to t hat of a mercury lamp in construction.
A type of lamp popular for li ghting commercial interiors, uses argon gas to ease
Mercury Lamp
starting, it produces light by means of an electric discharge in mercury vapor.
A type of lamp which produces light by means of the reaction of halogen additive in
Tungsten Halogen Lamp
the bulb reacts with chemically with tungsten.
High-Pressure-Sodium
A type of lamp generally used for roadways and sidewalks, uses sodium gas.
(HPS)
Building with fire alarm and suppression system. Intelligent Building
This shows the vertical relationships of all panels, feeders, switches, switchboards,
and major components are shown up to, but not including, branch circuiting, it is an Riser Diagram
electrical version of a vertical section taken through the building.
In elevator, it detects the obstacles during the door closing, and reopens the door if
Safety Shoe
there is something. Photocell can be used together with this.
It prevents passengers from falling into the hoistway when they try to get out
Fascia Plate
of the car which is stopped between the floors.
In elevator, it makes the buzzer alarm when the car is overloaded and the door
Weighing Device
remains open until overloading is eliminated.
In elevator, it protects the equipment from over current. Circuit Breaker
In elevator, these prevent the excessive car travel at the highest and lowest floor. Limit Switches
In escalators, these stop the escalator if a foreign object becomes wedged at t he
Handrail Guard Switches
guard.
In escalators, this is located at the bottom tr uss of the escalator and provided with on
and off positions to stop or prevents the escalator from starting during maintenance Disconnect Switch
service.
This device, in escalators, is provided at the drive unit location to protect against Mechanical
accidental movement of the escalator during inspection of the drives or during general Maintenance
maintenance. Locking Device
This device, in escalators, stops the escalator automatically if an abnormal current is Current Overload Safety
supplied to the motor. Switch
This switch cuts off all current supply to the escalator for inspection, maintenance, or
Knife Switch
repairs.
In a lightning protection system, the combination of a metal rod and its brace or
 Air Ter mi nal
footing, on the upper part of a structure.
One of the earlier plastic to be developed in 1938, a du pont trade name for the
Teflon
white, soft, waxy, and non-adhesive polymer of tetrafluoroethylene.
The number of cycles per unit time of a wave or oscillations expressed in hertz of
Frequency
cycles per second.
Of a partition, the number of decibels by which sound is reduced in t ransmission
through it; a measure of the sound insulation value of the partition, the higher the Transmission Lo ss
number, the greater the insulation value.
The cooling effect obtained when 1 ton of ice at 32 oF (0 oC) melts to water at the
Ton of Refrigeration
same temperature in 24 hrs. (equivalent to 12,000 Btu/hr)