Journeyman Plumbing Test (Texas) 2/5/2026
Access (to) 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) 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) 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) 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.
Anodeless Riser A transition assembly in which plastic piping is installed and terminated above ground
outside of a building.
Appliance 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.
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,Journeyman Plumbing Test (Texas) 2/5/2026
Approved Acceptable to the code official.
Backfill Must be replaced in 6in lifts to a depth of 12in before completing the fill process.
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.
Backflow Connection Any arrangement whereby backflow is possible.
Backflow Preventer A backflow prevention assembly, a backflow prevention device or other means or
method to prevent backflow into the potable water supply.
Backsiphonage 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.
Journeyman Plumbing Test (Texas) Page 2 of 29
, Journeyman Plumbing Test (Texas) 2/5/2026
Bathroom Group 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.
Bathtub and Shower Bathtubs must have a minimum drain outlet, fixture drain and trap of not less than 1
1/2in. and it must be equipped with a watertight stopper. If the hand-held shower wand
can be submerged below the flood rim of the fixture. The device must meet the
backflow protection requirements of ASME A112.18.3. Whirlpool bathtub circulation
pumps must be accessible for servicing a minimum 12inx12in access shall be
provided. Where the pump is located more than 2 ft from the access opening, the
opening must be at least 18inx18in. Showers shall also be provided with a drain outlet,
fixture drain and trap of not less than 1 1/2 in.
Boring and Notching in Solid Sawn Beams, Floor Joists and No notches permitted in the center third.
Ceiling Joists Boring must not exceed a third of the depth and a minimum of 2in from the bottom
and 2in minimum between holes.
Notching must not exceed a sixth of the depth into the beam.
Notching must not be wider than a third of the depth of the beam.
Notching on an end that is supported can be notched a fourth into the beam.
Boring and Notching of Studs in Exterior Wall or Load 5/8in minimum from edge of stud.
Bearing Interior Wall Maximum diameter 60% of stud depth.
Studs must be doubled.
No more than 2 successive double stubs so bored
Bored holes in single studs have a maximum diameter of 40% of stud depth
Notch 25% of stud depth maximum
Journeyman Plumbing Test (Texas) Page 3 of 29
Access (to) 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) 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) 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) 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.
Anodeless Riser A transition assembly in which plastic piping is installed and terminated above ground
outside of a building.
Appliance 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.
Journeyman Plumbing Test (Texas) Page 1 of 29
,Journeyman Plumbing Test (Texas) 2/5/2026
Approved Acceptable to the code official.
Backfill Must be replaced in 6in lifts to a depth of 12in before completing the fill process.
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.
Backflow Connection Any arrangement whereby backflow is possible.
Backflow Preventer A backflow prevention assembly, a backflow prevention device or other means or
method to prevent backflow into the potable water supply.
Backsiphonage 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.
Journeyman Plumbing Test (Texas) Page 2 of 29
, Journeyman Plumbing Test (Texas) 2/5/2026
Bathroom Group 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.
Bathtub and Shower Bathtubs must have a minimum drain outlet, fixture drain and trap of not less than 1
1/2in. and it must be equipped with a watertight stopper. If the hand-held shower wand
can be submerged below the flood rim of the fixture. The device must meet the
backflow protection requirements of ASME A112.18.3. Whirlpool bathtub circulation
pumps must be accessible for servicing a minimum 12inx12in access shall be
provided. Where the pump is located more than 2 ft from the access opening, the
opening must be at least 18inx18in. Showers shall also be provided with a drain outlet,
fixture drain and trap of not less than 1 1/2 in.
Boring and Notching in Solid Sawn Beams, Floor Joists and No notches permitted in the center third.
Ceiling Joists Boring must not exceed a third of the depth and a minimum of 2in from the bottom
and 2in minimum between holes.
Notching must not exceed a sixth of the depth into the beam.
Notching must not be wider than a third of the depth of the beam.
Notching on an end that is supported can be notched a fourth into the beam.
Boring and Notching of Studs in Exterior Wall or Load 5/8in minimum from edge of stud.
Bearing Interior Wall Maximum diameter 60% of stud depth.
Studs must be doubled.
No more than 2 successive double stubs so bored
Bored holes in single studs have a maximum diameter of 40% of stud depth
Notch 25% of stud depth maximum
Journeyman Plumbing Test (Texas) Page 3 of 29
