2025/2026 Exam Questions and Verified
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Access (to) - 🧠 ANSWER ✔✔That which enables a fixture, appliance or
equipment to be reached by ready access or by a means that first requires
the removal or movement of a panel, door or similar obstruction.
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.
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, 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