GENERAL FOCUS Flashcards
Which of the following
statements/phrases best explains why a-c
current is extensively used in residential,
commercial, and industrial applications?
Voltage of A-C
Current can be
stepped up or down
A packaged assembly of air-conditioning
components consisting of coils, filters, fan,
humidifier, etc., which provides for the
treatment of air before it is distributed to
an air-conditioned space. Identify item
below
Air-Handling Unit
In a building, it consists of water service
pipe, building supply pipes and the
essential branch pipes, valves and all other
appurtenances for the supply of water.
Water Supply and
Distribution System
In plumbing, it is defined as the
installation of parts of the plumbing
system which can be completed prior to
installation of fixtures or finishing, it
involves the use of drainage, water supply
and vent pipes and other necessary
fittings and pipe supports.
Roughing-In
Which of the following arrangement of
components will produce cooling
effect in a refrigerating cycle?
compressor,
condenser,
expansion valve,
then evaporator
It is the ratio of the maximum demand of
a system or part of a system to the total
connected load of a systely or part of a
system under consideration; value is
expressed in percentage, e.g. 80 percent
for residential load.
Demand Factor
A suction created by the flow of liquid in
pipes, a pressure less than the
atmospheric pressure.
Siphonage
It is defined as the detailed study of all
pertinent sound sources, sound
transmission paths and sound receptors
in the context of a particular
acoustical problem
Acoustical Analysis
It is the transfer of heat from a point of
higher temperature to a point of lower
temperature
Conduction
Electricity produced by certain crystals
such as quartz and Rochelle salts
resulting from the application of
mechanical stress or pressure is known as
Piezoelectricity
This valve is commonly installed on
lavatories to control water supply where
inlets and outlet openings are
perpendicular to each other.
Angle Valve
What device is used to convert alternating
current into direct current? An example of
the use of this device is that of an elevator
where power input is in AC and the
required current to run the motor is in DC.
Rectifier
It is the ability of wire or cable to carry
current without overheating; it is rated
in amperes.
Ampacity
A watertight compartment into which the
discharge of sanitary plumbing system or part thereof, designed art
constructed to retain solids, digest
organic matter through period of
detention and to allow the liquid to
discharge into the soil outside of the tank
through a system of open-jointed
sub-surface piping or seepage.
Septic Tank
What is the term used for a sound field in
which the energy arrives at the
receiver in a direct path from the source
without any contribution from
reflections?
Direct Sound Field
What is the most common type of water
distribution system which depends on the
pressure from the water main
Upfeed and Gravity
Distribution System
A vertical length of soil or waste stack at
least eight feet in height (a storey
height), within which the horizontal
branches from one storey or floor of the
building or structure are connected to the
stack.
Branch Interval
It is the ratio of the weight of water vapor
actually contained in humid air to the
maximum possible weight of water vapor
that the air could contain at the same
temperature.
Relative Humidity
Electrical pressure that causes the
electrons to move through a conductor, it
is analogous to pressure in water.
Electromotive
The following are guidelines for preparing
an electrical lighting layout
EXCEPT__________.
column grids and
dimensions shall be
indicated
What is the most common term used to
refer to the liquid refrigerant used in
air-conditioning systems?
Freon
A general term which refers to the process
of removing contaminants from water. It
involves several processes that is intended
to render raw water to a potable and safe
water for consumption.
Water
PURIFICATION
In power supply system, this refers to the
overhead service conductors
running from the utility poles to the point
of connection in a building
Service Drop
Which type of venting system is used to
provide ventilation to two (2) fixture
traps usually placed side-by-side or
back-to-back?
Common Vent
A pipe which conveys potable water from
the building supply pipe to the
plumbing fixtures and other outlets.
Water Distributing
System
Which of the following statements is a
violation or contradictory to the basic
plumbing principles?
Water closet may be
located in an unlit
or unventilated
room
A law stating that relationship between
current, voltage and resistance, it further
states that the amount of current passing
through a conductor is directly
proportional to the voltage across the
conductor and inversely proportional to the resistance of the conductor
Ohm’s Law
The ratio of luminous flux (lumen) emitted
by a luminaire to the total flux
emitted by the lamp in the luminaire
Luminous Efficiency
In acoustics, what is the unit of loudness
level?
Decibel
The following are examples of plumbing
fixtures EXCEPT___________
Trap
Also known as vapor pump, it draws
refrigerant from the evaporator at low
pressure and forces it to the condenser at
high pressure before it passes
through the expansion valve to reduce
pressure and back to the evaporator;
cycle is repeated.
Compressor
Refrigerating cycle involves the following
basic operating principles EXCEPT
________________ in a closed circuit of
tubes and cooling devices
Conduction
This refers to a process of electromotive
force (emf) generation through the
movement of magnetic flux which cuts an
electrical conductor
Electromagnetic
Induction
A covered conductor is described as
______________.
A conductor
encased in a
material that is not
recognized by the
code as
electrical insulation
A type of air-conditioning system where a
self-contained unit houses all the
necessary air-conditioning components.
Unitary Room (AC
Type)
In water supply system, it is the first
section of water supply piping in a
building after the water meter.
Building Supply
Pipe
Which statement is true regarding
alternating current?
Power can be
transmitted in
longer distances in
AC than DC using
transformer
What regulating device in an air
conditioning unit is actuated by changes
in humidity?
Humidistat
It is the ratio of the weight of water vapor
actually contained in humid air to the
maximum possible weight of water vapor
that the air could contain at the same
temperature.
Relative Humidity
Inverse Square Law states that sound
intensity _____________ the square of the
distance from the source
Varies Inversely with
Which among the types of ventilation
systems is done by installing a fitting/s
as an interconnection of a soil/waste stack
and a vent stack, it is usually
connected at the base of a soil/waste
stack and at the stack vent? It prevents
pressure build-up and the occurrence of
siphonage along the soil or waste stack.
Vent Stack
It is the product of surface area (sq. ft.) and
sound absorption coefficient (SAC), it has the unit sabin
Sound Attenuation
Creep is a phenomenon whereby sound travels in a
Curved Surface
It generally refers to a complete lighting unit consisting of one or more lamps together with components that are used to distribute light; also known as lighting fixtures
Luminaire
Which of the following is a factor or variable used in the Zonal Cavity Method of Illumination Calculation
CU
The ratio of lumens produced by a lamp and the amount of power used to generate lumens
Ratio of luminous flux to power
In lighting, it is the ratio of luminous flux to the corresponding radiant flux at a particular wavelength, it is expressed in lumens per watt
Luminosity
Which of the following is an example of an electronic amplification system
Annunciator
Electronic Transducer
Loud Speaker System
ALL OF THESE
A pjpe that conveys only liquid waste free of fecal matter.
Waste Pipe
A waste pipe thal does not connect directly wiih lhe drainage system, btrt that discharges into the drainage system through an air break or gap into a trap, fixture receptor or interceptor
indirect Waste pipe
Any liquid waste containing animal or vegetable matter in suspension or solution. lt may include Iiquids containing chemicals in solution
Sewage
A pipe which carries ground and surface water, storm water or waste water into the building drainage system.
Drain
is a system of pipes, fittings, devices and appurienances for removing storm waler- rainwater, surface run-off and underground seepage resulting from precipitalion.
Storm Drainage System
(Plumbing System Components) Cold Water Suppty System Hot Water Supply System
Water Supply and Dislribution System
(Plumbing System Components) Soil Piping Syslem Waste Piping System Direct Waste Piping System lndirect Waste Piping System Ventilation System House Drain House Sewer Drainage Cleanouls Plumbing Traps
Sanitary Piping System
is a component system in drainage that is designed to collect, convey and discharge storm water or rainwater to a suitable or approved location or a system of disposa
Storm Drainage Systems
The screening, sedimentation, filtration, etc. of waste water and solids from a sewer, and the disposal of settled sludge in digestion tanks or on drying beds.
Sewage Disposal Systems
are receptacles intended to receive water, liquid, or water carried wastes and discharge them into the drainage system
Plumbing Fixtures
The physical separation between a waste pipe and an indirect waste receptor or device indirectly connecte
Air break
The unobstructed vertlcal distance through the free atmosphere between the outlet of a faucet and the flood level
rim of the fixlure or receptacle.
Air gap
A valve in which the inlet and outlet
openings are at 900 angle to one another.
Angle valve
The flow of water or wastewater in pipes
in a reverse direction from that normally
intended.
Backflow
A pressure within the sanitary drainage
system or vent piping system that is
greater than atmospheric pressure (> 14. /
psi).
Back pressure
The flowing by negative pressure of
contaminated or polluted water from a
plumbing fixture into a potable water
system.
Back Siphonage
A device installed in piping to prevent the
reverse flow of storm or sewage into the
drainage system or their branches
Backwater valve
A valve in which the flow of liquid is
controlled by a rotating drilled ball that
fits tightly against a resilient (flexible) seat
in the valve body
Ball valve
Any group of two or more similar adjacent
fixtures which discharge into a common
horizontal waste or soil branch.
Battery of fixtures
The end portion of a pipe which for a
short distance is enlarged to receive the
end of another pipe which may be of the
same diameter for the purpose of making
a joint.
Bell or hub
A term that is synonymous with faucet,
cock, plug, tap or spigot.
Bibb
A kind of fixture which is used for bathing
the external genitals and posterior parts of
the body.
Bidet
Any part of the piping system other the
main, riser or stack,
Branch
A veriical length of soil or waste stack at
least eight feet in height (a storey height),
within which ihe horizontal branches
from one storey or floor of the building or
structure are connected to the stack.
Branch interval
That pan of the lowest horizontal piping of
a plumbing syslem which receives the
discharge from soil, waste and other
drainage pipes inside a building and
conveys it to the building sewer/house
sewer.
Building drain/
House drain
That part ol the drainage system that
extends from the end of the building
drain and conveys its discharge to the
public sewer, private sewer, individual
sewage disposal system, or other
appropriate point of disposal.
Building/ House
sewer
Plugging an opening with oakum, lead or
other material that are pounded into the
annular space. Also the material pounded
into the annular space.
Caulking/ Calking/
Cogging
A non-wateriight lined excavation in the
ground which receives the discharge of a
sanitary drainage system or part thereof,
designed to retain the organic matter and
solids discharging ihere from, but
permitting the liquid to seep through the
sides and bottom of the cesspool.
Cesspool
The first section of water supply piping in
a building after the water meter.
Building Supply
Pipe
A fitting with a removable plate or plug
that is placed in plumbing drainage pipe
lines to allow access to the pipes for the
purpose of cleaning and maintenance.
Cleanout
Part of the roofing and/or area gutter
system that takes water from a roof
above-sprface area to a storm drain or
other disposal area or system.
Conductor or
Leader
Any physical connection or arrangement
of pipes between two otherwise separate
building water supply pipes or system
through which or by means of which
water supply may flow from one system to
the other, the direct;on 0f fl0w depends
on the pressure difference between the
two systems.
Cross connection
The extended portion of a pipe that is
closed one end to which no connections
are made on the extended portion, thus
permitting stagnati0n of wastewater or air
therein.
Deadend
The length along the center line of pipes
and fittings.
Developed length
The nominai commercial designation,
normally the lnside diameter of the pipe,
unless otherwise specifically stated in a
particular plumbing code
Diameter
The vertical portion 0f a rainwater
conductor.
Downspout
Any pipe which carries wastewater or
waterborne wastes in a building drainage
system.
Drain
A common measure of the probable
discharge into the drainage syslem by
various types of plumbing figures 0n the
basis of one dfu being equal to a
discharge rate of 7.5 gals. per minule or
one cubic foot 0f water per minute.
Drainage fixture
unit (dfu)
The abbreviation for drairage, waste and
vent.
DWV
A valve on a water pipe by means of which
water can be drawn from or held within
the pipe. lhe valve is placed on the end of
the pipe.
Faucet
A receptacle attached to a plumbing
system other than a trap in which water or
wastes may be collected or obtained for
ultimate into the plumbing system.
Fixture
The level in a fixture at which water
begins to oveflow the top or rim of the
fixlure.
Flood level
A device located at the bottom of a flush
tank for flushing water closets and similar fixtures.
?
The volume of water used by a plumbing
fixture in a given amount of time. Usually
expressed in gallons per minute (spm).
Flow rate
A device which discharges a
predetermined quantity of water to
fixtures for flushing purposes and is
actuated by direct water pressure.
FIushometer valve
A bathroom containing a water closet, a
lavatory and a bathtub.
Full Bath
A valve in which the flow of water is
cut-off by means of a circular disk, fitting
against machine-smoothed surfaces at
right angles to the direction of flow.
Gate Valve
A valve in which the flow of water is cut off
by means of a circular disk that fits
against
the valve seal.
Globe Valve
A kind of return bend of small-sized
faucet, one end of which is about one foot
long and the other end is about three
inches. lt is commonly used as a faucet for
pantry sink and drinking fountain.
Gooseneck
A bathroom containing a water closet and
a lavatory.
Hall bath
A faucet to which a hose may be attached.
Hose Bibb
A waste pipe thal does not connect
directly with the drainage system but
conveys wastes by discharging into a
plumbing fixture or receptacle, which is
directly connected to the drainage
system, e.g. refrigerator waste pipe,
drinking fountain waste pipe, etc.
Indirect waste pipe
A condition contrary to sanitary principles
or injurious to health.
insanitary
A fixture designed for washing of the
hands and face
Lavatory / Wash
basin
The principal pipe to which the branches
may be connected.
Main
A vertical vent pipe installed primarily for
the purpose of providing circulation of air
to or from any part of the building
drainage system.
Main vent/ Vent
stack
An opening constructed in any part of
plumbing system, of sufficient size for a
person to gain access thereto.
Manhole
A cylindrical conduit or conductor, the
wall thickness is sufficient to receive a
standard pipe.
Pipe
A receptacle attached to a plumbing
system other than a trap in which water 0r
wastes may be collected or retained for
ultimate discharge into the plumbing
system.
Plumbing fixture/
Sanitary ware
Water that rneets the standards of a
government agency and is used for
culinary, domestic and drinking purposes.
Potable water
An outhouse or structure used for the
deposition of excrement.
Privy
A P-shaped trap commonly used on most
plumbing fixtures except for fixture
having integral trap.
P trap/ 1/2 S
trap/ Gooseneck
A pipe which conveys potable water from
the building supply pipe to the plumbing
fixtures and other outlets.
Water distributing
pipe
The water supply pipe plovided by the
water utility company where local
individual connection are done
Water main
The first after the water main before the
water meter.
Water service pipe
ln a building consists of the water service
pipe, water supply line, water distributing
pipes and the essential branch pipes,
valves and all other appurtenances for the
supply of potable water.
Water supply
system
A pipe connecting upward from a soil or
waste stack below the floor and below the
horizontal conneciion to an adjacent vent
slack at a point above the fl00r and higher
than the highest spill level of fixtures lor
preventing pressure changes in the stack.
Yoke vent
Water has the abilitylo absorb heat
without becoming much warmer itself. It
has greater heat capacity than any other
substance except ammonia.
Heat Capacity
It is the abjlity of water to stick to itself
and pull itself together. Water has an
extremely high surface tension.
Surface Tension
The ability of water to climb up a surface
against the pull of gravity.
Capillarity
Readily found in nature, as impounded
from precipitation, contains impurities
(physical, chemical, bacteriological or
radiological)
Natural Water
Water which undergoes treatment, either
physical, biological or chemical rneans to
improve water quality
Purified Water
Water with any material or substance that
affects the quality of water and affects the
health of an individual.
Contaminated
Water
Water with the presence of any foreign
substance (organic, inorganic,
radiological, biological) which tends to
degrade its quality so as to conslitute
health hazard and impair the potabilily of
water.
Polluted Water
Water with the presence of elements such
as calcium (Ca), Magnesium (Mg), lron (Fe)
and Alumjnum (At) which causes
hardness.
Hard Water
Water from laundries, wash basins, sinks,
shower, bathtubs.
Grey Water
Water without the presence 0f calcium
and Magnesium. This is characterized by
easiness of producing lather from
detergents and absence of scale
formation in boilers, heaters and pipes.
Soft Water
Water-plus-human waste that is flushed
out of toilets and urinals
Black Water
Rain, surface run-off
Storm Water
Thls process removes some suspended
matter from water simply by allowing time and the inactivity of water to do the
work of settling out heavier suspended
particles
Sedimentation
Coagulation
(Flocculation)
This process also removes suspended
matter, along with some coloration. A
chemical such as alum (hydrated
aluminum sulfate) is added to lurbulent
waler.
This process can improve the taste and
color of water, remove iron and
manganese and decrease in
corrosiveness.
Aeration (0xidation)
This is less esthetic than aeration but
more certain oxidation process.
Ozonation
The procedure is done by healing
seawater then pumping water into a low
pressure tank, where the water padially
vaporized.
Water Desalination
Any part 0f the piping system other the
main, riser or stack.
Branch
A branch leading from a soil, waste or vent
pipe, a buildlng drain, or a building sewer,
and terminaling at a developed length of
2 feet or more by means of a plug, cap or
other closed fitting.
Deadend
All the piping within a public or private
premises which conveys sewage,
rainwater or other Iiquid wastes to a point
of disposal
Drainage System
The property of a metal lhai permits
mechanical deformation by extrusion,
forging, rolling, etc. without fracturing.
Malleability
The resistance of a material to
deformation by compression or
indentation.
Hardness
The property of a material which fractures
under low stress without appreciable
deformation.
Brittleness
Property of a material described as
capable of being stretched or deformed
without fracturing.
Ductility
The property of a material that enables it
to deform in response to an applied force
and to recover its original size and shape
upon removal of the force.
Elasticity
The property of a material which enables
it to relain its appearance and iniegrity
when
exposed to the effects of the sun, wind, moisture and changes in temperature.
Weatherability
The property of a material that enables it
to resist being worn away by friction when
rubbed with another object
Abrasion Resistance
The resistance of a surface or a material to
shock, such as hard blow.
lmpact Resistance
The property of a piping material that
enables it to wear away by rusting or by
the aclion of chemicals.
Corrosion
Resistance
The degree of which a surface, such as
porcelain, enamel, will resist attack by
acids.
Acid Resistance/
Chemical
Resistance
is fabricated in great varieiy of
compositions, many of which are suitable
for drainage and vents as well as for water
supply systems- hot and cold application
Plastic or Synthetic
Pipe
A rigid, strong and economical pipe. This
pipe has excellent chemical resistance,
good crush resistance and impact
strength, fire resistant (self extinguishing),
is functional up to 120 deg F in pressure
systems and pressure 180 deg F in
non-pressure systems.
Polyvinyl Chloride
(PVC)
A kind of plastic pipe which has excellent
chemical, crush and fire resistance, high
impact and tensile strengh, and is
non.toxic; CPVC can be used for hot and
cold waier applications
Chlorinated
Polyvinyl Ghloride
(cPVc
Has good ehemieal rcsistanee, excellent
impaet strength, especially at low
temperatures and maintains rigidity at
high temperatures.
Acrylonitrile
Butadiene Styrene
(ABS)
Excellent chemical resistance, resistant to
sulphur bearing compounds, lightweight,
good tensile strength and saltwater
resistant
Polypropylene (PP)
Excellent chemical and crush resistance,
has impaet strength and flexibility and
good low temperature performance.
Polyethylene (FE)
Only flexible plastic tubing suitable for use
with hot and cold unter pressure system.
PB has excellent chemical resistance to
acids and alkalis but is not suited for fuel
oil, gasoline or kerosene distribution
systems.
Polybutylene (PB)
A floor drain is a receptacle used to receive
water that is to be drained from lhe floor
into the drainage system. Floor drains are
considered plumbing fixtures
Floor Drains
A vent stack must be extended vertically
upwards and terminated at the vent stack
through roof through ___
Stack Vent
The minimum slope for a drainage pipe
2%
A periodic current, the average value of
which over a period is zero.
Alternating Current
The current, in amperes, that a conductor
can carry continuously under the
conditions of use without exceeding its
temperature rating.
Ampacity
Circuit breakers are rated in what unit?
Ampere
A synthetic non-flammable insulating
liquid which,
when decomposed by electric arc, evolves
only nonflammable gaseous mixture,
usually used in
transformers as insulator.
Askarel
A device used with fluorescent and
high-intensity discharge lamps to provide
the necessary circuit condition for starting
and operating the lamp.
Ballast
The circuit conductors between the final
overcurrent device protecting the circuit
and the outlet(s).
Branch Circuit
A type of nuclear reactor where the water
coolant is permitted to boil within the
core by operating at somewhat low
pressure
Boiling Water
Reactor
A synthetic rubber insulation used on
wires, cables and other electrical
apparatus.
Buna
A conductor or group of conductors that
serves as a common connection for three
or more circuits in a switchgear assembly.
Bus
A heavy conductor, usually in the form of a
solid copper or aluminum bar, strip of or
rod used for connecting, carrying, and
distributing large electric currents
Busbar
The protective covering such as
non-metallic materials as plastic, applied
over a cable.
Cable Sheath
A rigid metal housing for a group of heavy
conductors insulated from each other and
the enclosure, also called Busduct.
Busway
Unit or assembly of unit sections and
associated fittings forming a rigid
structural system used to support cables
Cable Tray
A measure of permissiveness to charge
flow; the reciprocal of resistance.
Conductance
Type of switch where pilot light inside a lit
to guide the person inside
Illuminated Switch
An enclosure for housing and electric
wires and/or cables that are joined
together in connecting or branching
electrical circuits
Junction Box
Light source used in lighting fixtures best
specified in areas such as those requiring
high illumination levels for detailed work
such as needle work
Metal Halide
Overhead service conductor from the pole
or other aerial support to and including
the splices if any, connecting
to the service entrance conductors of a
building.
Service Drop
Resistance in alternating current also
known as impedance is a combination of
___ and ___.
Resistance &
Reactance
A component of an electricity supply
system that divides an electrical power
feed into any subsidiary circuits,
while providing a protective overcurrent
device for each circuit in a common enclosure
Panel Board
A type of perimeter detector that detects
objects in heat range of body
temperature.
Passive Infrared
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 the enclosed conductors.
Pull Box
The simplest type of building automation
system.
Telecommunication
System
Factory assembly of one or more
conductors, each individually insulated
and enclosed in a metallic sheath of
interlocking metal tape, or a smooth
corrugated metallic tube.
Metal Clad Cable
(Type MC)
A fabricated assembly of insulated
conductors enclosed in flexible metal
sheath.
Armored Cable
(Type AC)
A factory assembled conductor insulated
with a highly compressed refractory
mineral insulation enclosed in a liquid and
gas tight continuous copper sheath
Mineral Insulated
Cable (Type MI)
A factory assembly of two or more
insulated conductors having a moisture
resistant, flame retardant, and
non-metallic material outer sheath
Non-metallic
Sheated Cable (Type
NM or NMC
A moisture resistant cable used for
underground connections.
Underground
Feeder and Brance
Circuit Cable (Type
UF)
A single multi-conductor assembly
provided with or without an overall
covering primarily used for service wire.
Service Entrance
Cable (Type SE)
_____ watts shall be the maximum load for
each household lighting outlet.
100 watts
Portion of hoistway extends below level of
bottom landing or floor to provide for
overtravel for parts which required space
below the bottom of the car travel.
Elevator Pit
Electric cables that connects an elevator
car to a fixed electrical outlet in the
hoistway
Travelling Cable
Pulley for tightening and guiding the
hoisting cables of an elevator system
Idle sheave
Rectangular blocks of cast iron stacked in
one frame which is fastened to the
opposite ends of the cables to which the
car is fastened.
Counterweights
In an elevator, a piston or spring device
which absorbs the impact of a
descending elevator car in elevator pit
Buffer
An apparatus for raising or lowering a load
by the application of a building force
Hoist
A shaftway for the travel of one or more
elevators or dumbwaiters
Hoistway
Steel angles attached to the truss on
which the step rollers are guided thus
controlling the motion of the steps.
Tracks
An enclosure for housing the operator and
the hoisting mechanism, power plant and
equipment controlling a crane.
Cage/cab An enclosure for housing the operator and
A safety device for preventing the
operation of an elevator car unless its door
or gate is fully closed.
Door Contact
A part of an electric elevator serving as
the vertical passageway for car and
counterweights.
Shaft
A transportation safety device mounted
directly on the shaft of the elevator
machine.
Main Brake
Used where the elevator machine is
located at the basement.
Underslung System
Type of elevator machine that consists of a
DC motor, the shaft of which is directly
connected to the brake wheel and to the
driving sheave.
Gearless Traction
Machine
Type of elevator machine that employs a
worm and gear between the driving
motor and the sheave.
Geared Traction
Machine
It is raised by means of a movable rod nor
plunger rigidly fixed to the bottom of the
car.
Oil Hydraulic
Elevators
A hoisting and lowering mechanism
equipped with a car.
Dumbwaiter
The toothed portion of the threshold plate
at both ends of an escalator or moving
walk.
Combplate
A resultant sound energy returned from a
surface that is not absorbed.
Reflection
Change in the direction of waves as they
pass from one medium to another
Refraction
Reflection off a convex or uneven/non-flat
surface.
Diffusion
Bending of the travel of sound caused by
an obstacle in its path
Diffraction
Unit of sound intensity/level
Decibel (dB)
The unit of luminous intensity
Candela
Creep is the phenomenon whereby sound
travels in a ______.
Curve Surface
Farad is the unit capacity of a ___.
Capacitance
The time rate of flow of light.
Luminous Flux
The unit of luminous flux.
Lumen
Complete lighting unit consisting of a
lamp or lamps together with The parts
designed to distribute the light, to
position and protect the lamps, and to
connect the lamps to the power supply
Luminaire
The luminous intensity of a surface in a
given direction per unit of projected
area of the surface as viewed from that
direction.
Luminance
The SI (metric) unit of illuminance. One lux
is one lumen per sq. meter.
Lux (lx)
The density of the luminous flux incident
on a surface
Illuminance
A condition characterized as vertically
downward directly belowthe luminaire.
Nadir
TRUE/FALSE: Sound Transmission Loss
(STL) is/are affected by the following
_____________________.
a. intensity of sound from source
b. material density
c. medium
d. all of the above
D. All of the above
An acoustic free field or free from echo
Anechoic
Which material would exhibit the highest
sound absorption coefficient (SAC) value?
Marble, Wood, Plastic or Carpet
Carpet
Reflected sound reaching a listener’s ear
with a delay after the initial creation of
sound
Echo
Unit of frequency which is equal to one
cycle per second
Hertz
anechoic chamber
Flutter Echo
Type of sound absorbent best for lower
band frequencies
Porous Absorbent
Persistence of sound in an enclosed space
resulting from repeated reflection or
scattering of sound
Reverberation
Unit of Sound Absorption which is the
product of surface area (sq.ft.), and sound
absorption coefficient (SAC).
Sabin
When sound impinges on a surface such
as walls, floor, ceiling, etc.
Structure Borne
Sound
A common sewer directly controlled by public authority to which all abutters have equal rights of connections
Public sewer
A loosely lined excavation in the ground, which receives the discharge of a septic tank and designed to permit the effluent from the septic tank to seep through the bottom and sides of the pit.
Seepage pit/ Cesspool/ Dry weil
A water supply pipe that extends vertically one full storey or more to convey water to fixture branches or group of fixtures
Riser
The installation of parts of the plumbing system which can be completed prior to installation of fixtures or finishing. This includes, drainage, water supply, and vent piping and necessary fixture supports.
Roughing - in
Any wastewater containing animal or vegetable rnatter in suspension or solution and may include liquids contalning chemicals in solution
Sewage
A pipe or conduit for carrying sewage and wastewater.
Sewer
A pipe which carries the discharge toilets or similar fixtures, with or without the discharge of other fixtures, to a sewer or approved drain
Soil pipe
A suction created by the flow of liquids in pipes; a pressure less than the atmospheric pressure.
Siphonage
A general term used lor any vertical line 0f soil, waste or vent piping.
Stack
A watertight receptacle which the discharge of sanitary plumbing system or part thereof, designed and constructed to retain solids, digest organic mafter through a period of detention and to allow the liquids to discharge into the soil outside of the tank through a system 0f open pointed subsurface pipings or a seepage pit.
Septic tank
A tank or pit below the normal grade of gravity receiving liquid wastes or sewage from which the wastes or sewage must be mechanically pumped to a higher receiving point.
Sump
A fitting 0r device designed and constructed to provide, when properly vented, a liquid seal which prevents backflow and passage of foul air and gases without materially affeciing the flow of sewage or wastewater through it
Trap
The vertical vent pipe inslalled primarily for providing circulation of air to and from any part of the soil, wasle of the drainage system
Vent stack/ Main vent
Any pipe which conveys the discharge of water closet, urinal or fixtures having similar function, with or without the discharges from other fixtures to the building drain or build
Soil stack
A pipe that conveys ONLY LIQUID WASTE FREE OF FECAL MATTER
WASTE PIPE
The end ol a pipe which fits into a bell; also a word used synonymously with faucet.
Spigot
Which of the following statements describing electrical resistance in a conductor is FALSE
Increasing the cross sectional area of the conductor increases its resistance
A system in plumbing which provides and distributes water to the differenl parts 0f the building 0r structure, for purposes such as drinking, cleaning, washing, culinary use, etc.; it includes the water distributing pipes, control devices, equipment, and other appurtenances.
Water Supply System
A pipe which conveys potable water from
the building supply pipe to the plumbing
fixtures and other outlets.
Water distributing
pipe
A pipe which conveys only wastewater or liquid waste free of fecal matter
Waste pipe
The plumbing system 0f a building includes the water supply distributing pipes, the fixture and fixture traps, the soil, waste and vent pipes; the building drain and building sewer; the storm water drainage, with their devices, appurtenances and connections wjlhin the building and outside the building within the property LINE
Plumbing System
The art and science 0f creating and maintaining sanitary conditions in building used by humans.
Plumbing
Pipes installed to remove the wastewater and water-borne wastes from plumbing fixtures and convey these to the sanitary sewer and other point of disposa
Sanitary Drainage pipes
All the piping withjn a public or private premises which conveys sewage, rainwater or other liquid wastes to a point of disposal. A drainage system does not include the mains 0f public sewer systems 0r a private 0r a public sewage treatment or disposal plan
Drainage System
A pipe that conveys the discharge of water closets or similar fixtures containing fecal matter, with or without the discharge of other fixtures to the building drain or building sewer
SOIL PIPE
A waste pipe that does NOT CONNECT DIRECTLY with the drainage system, but that discharges into the drainage system through an air break / gap into a trap, fixture receptor or interceptor.
INDIRECT WASTE PIPE
The sanitary drajnage and vent piping system are installed by the plurnber to remove wastewarer and water-borne wastes from the plumbing fixtures and appliances, and to provide circulation 0f air within lhe drainage piping
Sanitary Drainage and Vent piping System
A system of pipes, fittings, and other devices installed for the purpose of providing circulation of air and creating the system thereby preventing siphonage and backpressure
Ventilation System
