CSLB CONTRACTOR B EXAM
(PLUMBING)
acid waste piping - Answer- System piping and fittings that are resistant to acid
contents usually found in manufacturing
processes.
aerator - Answer- A device used to mix air and water with water distribution and
water conservation in mind; e.g., faucets.
air gap (drainage system) - Answer- The unobstructed vertical distance through the
free atmosphere between the outlet of a
waste pipe and the flood level rim of the receptacle into which the waste pipe is
discharging
backflow - Answer- Pressure created by any means in the water distribution system,
which, by being in excess of the pressure in the water supply mains, causes a
potential _________ condition
back pressure, low head - Answer- A pressure less than or equal to 4.33 psi (29.88
kPa) or the pressure exerted by a 10-foot
(3048 mm), column of water
back siphonage - Answer- The backflow of potentially contaminated water into the
potable water system as a result of the pressure in the potable water system falling
below atmospheric pressure of the plumbing fixtures, pools, tanl‹s, or vats connected
to the potable water distribution piping.
backwater valve - Answer- A device or valve installed in the building drain or sewer
pipe where a sewer is subject to backflow, which prevents drainage or waste from
bacl‹ing up into a low level or fixtures and causing a flooding condition.
drainage - Answer- A reversal of flow in the drainage system.
backflow presenter - Answer- A device or means to prevent the flow water or other
liquids, mixtures or substances into the distributing pipe of a potable supply of water,
or into any other fixture or appliance from any source other than its intended course.
bathroom group - Answer- A group of fixtures consisting of a water closet, lavatory,
bathtub or shower, including or
excluding a bidet, an emergency floor drain, or both. Such fixtures are located
battery of fixtures - Answer- Any group of two or more similar adjacent plumbing
fixtures that discharges into a common horizontal waste or soil branch.
, bell reducer - Answer- A fitting; shaped like a bell which has one opening of a
smaller diameter used to reduce the size of the pipe in the line, and the opposite
opening of larger diameter.
bell and spigot joint - Answer- Cast-iron piping system comprising a bell that receives
pipe inside and is sealed using molten lead poured over pacl‹ed oakum or rubber
seal gasl‹et.
branch - Answer- Any part of the piping system other than a main, a riser or a stack.
branch water pipe - Answer- That portion of the water distribution system extending,
from a trailer park service main to a trailer site, including the terminal end which
connects to the trailer water supply pipe.
brass connection - Answer- ____ connection is used to connect galvanized iron pipe
to copper pipe.
blazing - Answer- High temperature soldering with alloys that bond to metals in
excess of 840-degrees F.
building drain - Answer- The main horizontal sanitary collection system, inside the
wall line of the building, that conveys sewage to the building sewer which begins 2-
feet (more in some codes), outside the building wall.
building storm drain - Answer- A drain used to receive and convey rain water,
surface water, ground water, subsurface water, and other clear water waste, and
discharge these waste products into a building storm sewer or a combined building
sewer beginning 2-feet outside the building wall
building storm sewer - Answer- The pipe that connects to the end of the building
storm drain to receive and convey its contents to a public storm sewer; combined
sewer, or other approved disposal point.
building subdrain - Answer- Any portion of a drainage system which cannot drain by
gravity into the building sewer.__
building trap - Answer- A device, fitting or assembly of fittings installed in the building
drain to prevent circulation of air between the drainage system of the building and
the building sewer.
check valve - Answer- A one-direction valve that allows flow one way, the check
operated by gravity or spring.
circuit vent - Answer- A vent that serves two or more fixture traps. It connects to a
horizontal branch drain from the downstream side of the highest (last) fixture
connection and then to the vent stack.
cleanout - Answer- An access opening in the drainage system utilized for the
removal of obstructions. Types of _______ included a removal plug or cap, and a
removable fixture or fixture trap.
(PLUMBING)
acid waste piping - Answer- System piping and fittings that are resistant to acid
contents usually found in manufacturing
processes.
aerator - Answer- A device used to mix air and water with water distribution and
water conservation in mind; e.g., faucets.
air gap (drainage system) - Answer- The unobstructed vertical distance through the
free atmosphere between the outlet of a
waste pipe and the flood level rim of the receptacle into which the waste pipe is
discharging
backflow - Answer- Pressure created by any means in the water distribution system,
which, by being in excess of the pressure in the water supply mains, causes a
potential _________ condition
back pressure, low head - Answer- A pressure less than or equal to 4.33 psi (29.88
kPa) or the pressure exerted by a 10-foot
(3048 mm), column of water
back siphonage - Answer- The backflow of potentially contaminated water into the
potable water system as a result of the pressure in the potable water system falling
below atmospheric pressure of the plumbing fixtures, pools, tanl‹s, or vats connected
to the potable water distribution piping.
backwater valve - Answer- A device or valve installed in the building drain or sewer
pipe where a sewer is subject to backflow, which prevents drainage or waste from
bacl‹ing up into a low level or fixtures and causing a flooding condition.
drainage - Answer- A reversal of flow in the drainage system.
backflow presenter - Answer- A device or means to prevent the flow water or other
liquids, mixtures or substances into the distributing pipe of a potable supply of water,
or into any other fixture or appliance from any source other than its intended course.
bathroom group - Answer- A group of fixtures consisting of a water closet, lavatory,
bathtub or shower, including or
excluding a bidet, an emergency floor drain, or both. Such fixtures are located
battery of fixtures - Answer- Any group of two or more similar adjacent plumbing
fixtures that discharges into a common horizontal waste or soil branch.
, bell reducer - Answer- A fitting; shaped like a bell which has one opening of a
smaller diameter used to reduce the size of the pipe in the line, and the opposite
opening of larger diameter.
bell and spigot joint - Answer- Cast-iron piping system comprising a bell that receives
pipe inside and is sealed using molten lead poured over pacl‹ed oakum or rubber
seal gasl‹et.
branch - Answer- Any part of the piping system other than a main, a riser or a stack.
branch water pipe - Answer- That portion of the water distribution system extending,
from a trailer park service main to a trailer site, including the terminal end which
connects to the trailer water supply pipe.
brass connection - Answer- ____ connection is used to connect galvanized iron pipe
to copper pipe.
blazing - Answer- High temperature soldering with alloys that bond to metals in
excess of 840-degrees F.
building drain - Answer- The main horizontal sanitary collection system, inside the
wall line of the building, that conveys sewage to the building sewer which begins 2-
feet (more in some codes), outside the building wall.
building storm drain - Answer- A drain used to receive and convey rain water,
surface water, ground water, subsurface water, and other clear water waste, and
discharge these waste products into a building storm sewer or a combined building
sewer beginning 2-feet outside the building wall
building storm sewer - Answer- The pipe that connects to the end of the building
storm drain to receive and convey its contents to a public storm sewer; combined
sewer, or other approved disposal point.
building subdrain - Answer- Any portion of a drainage system which cannot drain by
gravity into the building sewer.__
building trap - Answer- A device, fitting or assembly of fittings installed in the building
drain to prevent circulation of air between the drainage system of the building and
the building sewer.
check valve - Answer- A one-direction valve that allows flow one way, the check
operated by gravity or spring.
circuit vent - Answer- A vent that serves two or more fixture traps. It connects to a
horizontal branch drain from the downstream side of the highest (last) fixture
connection and then to the vent stack.
cleanout - Answer- An access opening in the drainage system utilized for the
removal of obstructions. Types of _______ included a removal plug or cap, and a
removable fixture or fixture trap.
