NHIE PLUMBING TEST BANK QUESTIONS
WITH VERIFIED ANSWERS FULL REVIEW
●● Air Break (Drainage System)
Answer: A piping arrangement in which a drain from a fixture, appliance
or device discharges indirectly into another fixture, receptacle or
interceptor at a point below the flood level rim and above the trap seal.
●● Air Gap (Drainage System)
Answer: The unobstructed vertical distance through the free atmosphere
between the outlet of the waste pipe and the flood level rim of the
receptacle into which the waste pipe is discharging. The distance
between the waste pipe outlet and the flood level rim of the receptor
must be at least twice the diameter of the indirect waste pipe.
●● Air Gap (Water Distribution System)
Answer: The unobstructed vertical distance through the free atmosphere
between the lowest opening from any pipe or faucet supplying water to a
tank, plumbing fixture or other device and the flood level rim of the
receptacle.
●● Appliance
Answer: Any apparatus or device that utilizes a fuel or a raw material as
a fuel to produce light, heat, power, refrigeration or air conditioning that
compresses fuel gases.
,●● 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 backflow condition.
●● Backsiphonage
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, tanks or vats connected to the potable water distribution piping.
●● Backflow Connection
Answer: Any arrangement whereby backflow is possible.
●● Backflow Preventer
Answer: A backflow prevention assembly, a backflow prevention device
or other means or method to prevent backflow into the potable water
supply.
●● 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 together on the same floor level.
,●● Branch Interval
Answer: A vertical measurement of distance, 8 feet (2438 mm) or more
in developed length, between the connections of horizontal branches to a
drainage stack. Measurements are taken down the stack from the highest
horizontal branch connection.
●● Branch Vent
Answer: A vent connecting one or more individual vents with a vent
stack or stack vent.
●● Building Drain
Answer: That part of the lowest piping of a drainage system that
receives the discharge from soil, waste and other drainage pipes inside
and that extends 30 inches (762 mm) in developed length of pipe beyond
the exterior walls of the building and conveys the drainage to the
building sewer.
●● Code
Answer: These regulations, subsequent amendments thereto or any
emergency rules or regulations that the administrative authority having
jurisdiction has lawfully adopted
●● Combination Waste and Vent System
, Answer: A specially designed system of waste piping embodying the
horizontal wet venting of one or more sinks, lavatories, drinking
fountains 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.
●● Pipe Material / Max Horizontal Bracing / Max Vertical Bracing
Answer: ABS / 4ft / 10ft
Cast-Iron / 5ft / 15ft
Copper Tubing (1 1/4 or smaller) / 6ft / 10ft
Copper Tubing (1 1/2 or larger) / 10ft / 10ft
PEX / 32in / 10ft
PVC / 4ft / 10ft
●● Common Vent
Answer: A vent connecting at the junction of two fixture drains or to a
fixture branch and serving as a vent for both fixtures.
●● Conductor
Answer: A pipe inside the building that conveys stormwater from the
roof to a storm or combined building drain.
●● Contamination
WITH VERIFIED ANSWERS FULL REVIEW
●● Air Break (Drainage System)
Answer: A piping arrangement in which a drain from a fixture, appliance
or device discharges indirectly into another fixture, receptacle or
interceptor at a point below the flood level rim and above the trap seal.
●● Air Gap (Drainage System)
Answer: The unobstructed vertical distance through the free atmosphere
between the outlet of the waste pipe and the flood level rim of the
receptacle into which the waste pipe is discharging. The distance
between the waste pipe outlet and the flood level rim of the receptor
must be at least twice the diameter of the indirect waste pipe.
●● Air Gap (Water Distribution System)
Answer: The unobstructed vertical distance through the free atmosphere
between the lowest opening from any pipe or faucet supplying water to a
tank, plumbing fixture or other device and the flood level rim of the
receptacle.
●● Appliance
Answer: Any apparatus or device that utilizes a fuel or a raw material as
a fuel to produce light, heat, power, refrigeration or air conditioning that
compresses fuel gases.
,●● 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 backflow condition.
●● Backsiphonage
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, tanks or vats connected to the potable water distribution piping.
●● Backflow Connection
Answer: Any arrangement whereby backflow is possible.
●● Backflow Preventer
Answer: A backflow prevention assembly, a backflow prevention device
or other means or method to prevent backflow into the potable water
supply.
●● 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 together on the same floor level.
,●● Branch Interval
Answer: A vertical measurement of distance, 8 feet (2438 mm) or more
in developed length, between the connections of horizontal branches to a
drainage stack. Measurements are taken down the stack from the highest
horizontal branch connection.
●● Branch Vent
Answer: A vent connecting one or more individual vents with a vent
stack or stack vent.
●● Building Drain
Answer: That part of the lowest piping of a drainage system that
receives the discharge from soil, waste and other drainage pipes inside
and that extends 30 inches (762 mm) in developed length of pipe beyond
the exterior walls of the building and conveys the drainage to the
building sewer.
●● Code
Answer: These regulations, subsequent amendments thereto or any
emergency rules or regulations that the administrative authority having
jurisdiction has lawfully adopted
●● Combination Waste and Vent System
, Answer: A specially designed system of waste piping embodying the
horizontal wet venting of one or more sinks, lavatories, drinking
fountains 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.
●● Pipe Material / Max Horizontal Bracing / Max Vertical Bracing
Answer: ABS / 4ft / 10ft
Cast-Iron / 5ft / 15ft
Copper Tubing (1 1/4 or smaller) / 6ft / 10ft
Copper Tubing (1 1/2 or larger) / 10ft / 10ft
PEX / 32in / 10ft
PVC / 4ft / 10ft
●● Common Vent
Answer: A vent connecting at the junction of two fixture drains or to a
fixture branch and serving as a vent for both fixtures.
●● Conductor
Answer: A pipe inside the building that conveys stormwater from the
roof to a storm or combined building drain.
●● Contamination
