Tradesman & Journeyman Texas Plumbing Exam Prep Course
2026–2027 | Complete Study Guide, Practice Questions &
Verified Answers
ACCESS TO - correct answers -Where applied to a fixture, connection, appliance, or equipment, having
access thereto (without demolition), but which first may require the removal of an access panel, door,
or similar obstruction. (note: The UPC refers to this as "accessible")
(READY) ACCESS TO - correct answers -Having a direct access without the necessity of removing a panel,
door, or similar obstruction. (note: The UPC refers to this as "readily accessible")
AIR ADMITTANCE VALVE - correct answers -One-way valve designed to allow air to enter the plumbing
drainage system when negative pressures develop in the piping system. The device shall close by gravity
and seal the vent terminal at zero differential pressure and under positive internal pressures. The
purpose of this device is to provide a method of allowing air to enter the plumbing drainage system
without the use of a vent extended to open air and to prevent sewer gases from escaping into a
building. Allowed by IPC/IRC, not allowed by UPC.
AIR GAP (DRAINAGE) - correct answers -The unobstructed vertical distance through the free atmosphere
between the lowest opening from a pipe, plumbing fixture, appliance, or appurtenance conveying waste
to the flood- level rim of the receptor. Typically required to be one inch, or twice the diameter of the
waste pipe.
AIR GAP (WATER DISTRIBUTION) - correct answers -The unobstructed vertical distance through the free
atmosphere between the lowest opening from a pipe or faucet conveying potable water to the flood-
level rim of a tank, vat, or fixture. Typically required to be one inch, or twice the diameter of the water
opening.
APPROVED - correct answers -Acceptable to the Authority Having Jurisdiction.
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, AUTHORITY HAVING JURISDICTION - correct answers -The organization, office, or individual responsible
for enforcing the requirements of a code or standard, or for approving equipment, materials,
installations, or procedures. The Authority Having Jurisdiction shall be a federal, state, local, or other
regional department or an individual such as a plumbing official, mechanical official, labor department
official, health department official, building official, or others having statutory authority. In the absence
of a statutory authority, the Authority Having Juris- diction may be some other responsible party. This
definition shall include the Authority Having Jurisdiction's duly authorized representative.
BACKFLOW - correct answers -The flow of water or other liquids, mixtures, or substances into the
distributing pipes of a potable supply of water from sources other than its intended source. See Back-
siphonage, Backpressure Backflow.
BACKPRESSURE BACKFLOW - correct answers -Backflow due to an increased pressure above the supply
pressure, which may be due to pumps, boilers, gravity, or other sources of pressure.
BACKSIPHONAGE - correct answers -The flowing back of used, contaminated, or polluted water from a
plumbing fixture or vessel into a water supply pipe due to a pressure less than atmospheric in such pipe.
See Backflow.
BACKFLOW PREVENTER - correct answers -A backflow prevention device, an assembly, or other method
to prevent backflow into the potable water system.
BOARD MEMBERS - correct answers -An individual appointed by the governor and confirmed by the
senate to serve on the Board.
BOARD STAFF - correct answers -Employees of the Board rather than Members of the Board.
BRANCH - correct answers -A part of the piping system other than a main, riser, or stack.
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2026–2027 | Complete Study Guide, Practice Questions &
Verified Answers
ACCESS TO - correct answers -Where applied to a fixture, connection, appliance, or equipment, having
access thereto (without demolition), but which first may require the removal of an access panel, door,
or similar obstruction. (note: The UPC refers to this as "accessible")
(READY) ACCESS TO - correct answers -Having a direct access without the necessity of removing a panel,
door, or similar obstruction. (note: The UPC refers to this as "readily accessible")
AIR ADMITTANCE VALVE - correct answers -One-way valve designed to allow air to enter the plumbing
drainage system when negative pressures develop in the piping system. The device shall close by gravity
and seal the vent terminal at zero differential pressure and under positive internal pressures. The
purpose of this device is to provide a method of allowing air to enter the plumbing drainage system
without the use of a vent extended to open air and to prevent sewer gases from escaping into a
building. Allowed by IPC/IRC, not allowed by UPC.
AIR GAP (DRAINAGE) - correct answers -The unobstructed vertical distance through the free atmosphere
between the lowest opening from a pipe, plumbing fixture, appliance, or appurtenance conveying waste
to the flood- level rim of the receptor. Typically required to be one inch, or twice the diameter of the
waste pipe.
AIR GAP (WATER DISTRIBUTION) - correct answers -The unobstructed vertical distance through the free
atmosphere between the lowest opening from a pipe or faucet conveying potable water to the flood-
level rim of a tank, vat, or fixture. Typically required to be one inch, or twice the diameter of the water
opening.
APPROVED - correct answers -Acceptable to the Authority Having Jurisdiction.
1
, AUTHORITY HAVING JURISDICTION - correct answers -The organization, office, or individual responsible
for enforcing the requirements of a code or standard, or for approving equipment, materials,
installations, or procedures. The Authority Having Jurisdiction shall be a federal, state, local, or other
regional department or an individual such as a plumbing official, mechanical official, labor department
official, health department official, building official, or others having statutory authority. In the absence
of a statutory authority, the Authority Having Juris- diction may be some other responsible party. This
definition shall include the Authority Having Jurisdiction's duly authorized representative.
BACKFLOW - correct answers -The flow of water or other liquids, mixtures, or substances into the
distributing pipes of a potable supply of water from sources other than its intended source. See Back-
siphonage, Backpressure Backflow.
BACKPRESSURE BACKFLOW - correct answers -Backflow due to an increased pressure above the supply
pressure, which may be due to pumps, boilers, gravity, or other sources of pressure.
BACKSIPHONAGE - correct answers -The flowing back of used, contaminated, or polluted water from a
plumbing fixture or vessel into a water supply pipe due to a pressure less than atmospheric in such pipe.
See Backflow.
BACKFLOW PREVENTER - correct answers -A backflow prevention device, an assembly, or other method
to prevent backflow into the potable water system.
BOARD MEMBERS - correct answers -An individual appointed by the governor and confirmed by the
senate to serve on the Board.
BOARD STAFF - correct answers -Employees of the Board rather than Members of the Board.
BRANCH - correct answers -A part of the piping system other than a main, riser, or stack.
2
