International Plumbing Code Exam | Atcual
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Latest Update 2026
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Terms in this set (70)
BACKFLOW 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.
Backpressure, low head 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 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.
Water supply system The flow of water or other liquids, mixtures or
substances into the distribution pipes of a potable
water supply from any source except the intended
source.
, BACKWATER VALVE A device or valve installed in the building drain or
sewer pipe where a sewer is subject to backflow,
and that prevents drainage or waste from backing
up into a lower level or fixtures and causing a
flooding condition.
BUILDING DRAIN 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.
Combined A building drain that conveys both sewage and
storm water or other drainage
Sanitary A building drain that conveys sewage only.
Storm A building drain that conveys storm water or other
drainage, but not sewage
BUILDING SEWER That part of the drainage system that extends from
the end of the building drain and conveys the
discharge to a public sewer, private sewer,
individual sewage disposal system or other point of
disposal.
Combined A building sewer that conveys both sewage and
storm water or other drainage.
Sanitary A building sewer that conveys sewage only
Questions with 100% Correct Answers | Verified |
Latest Update 2026
Save
Terms in this set (70)
BACKFLOW 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.
Backpressure, low head 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 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.
Water supply system The flow of water or other liquids, mixtures or
substances into the distribution pipes of a potable
water supply from any source except the intended
source.
, BACKWATER VALVE A device or valve installed in the building drain or
sewer pipe where a sewer is subject to backflow,
and that prevents drainage or waste from backing
up into a lower level or fixtures and causing a
flooding condition.
BUILDING DRAIN 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.
Combined A building drain that conveys both sewage and
storm water or other drainage
Sanitary A building drain that conveys sewage only.
Storm A building drain that conveys storm water or other
drainage, but not sewage
BUILDING SEWER That part of the drainage system that extends from
the end of the building drain and conveys the
discharge to a public sewer, private sewer,
individual sewage disposal system or other point of
disposal.
Combined A building sewer that conveys both sewage and
storm water or other drainage.
Sanitary A building sewer that conveys sewage only
