2026 Texas Plumbing Tradesman Exam
1 inch Water closet tank ballcocks shall be installed with the vacuum breaker critical
level at least _______ above the full opening of the overflow tube.
2 inches The depth of the finished dam or threshold for any shower, measured from the
top of the drain shall not be less than?
2 inches Fixture traps shower have a water seal of not less than?
3/4 of an inch The minimum size of any piping outlet for a freestanding gas range shall be?
4.33 PSI The pressure at the base of a column of water 10 feet high is?
5 feet The minimum vertical length for a gravity type venting system serving a fuel fired
water heater is?
6 feet The maximum distance of a gas shut off valve may be from a gas appliance (
except for range and dryer) is?
6 inches The critical level of a urinal flushometer vacuum breakerto the highest part of the
fixture is?
, 2026 Texas Plumbing Tradesman Exam
10 feet A plumbing vent shall terminate not less than_______ from an air intake.
12 inches Type B water heater vents 4 inches in size shall terminate above a horizontal roof
no less than?
12 x 12 access panel Concealed slip joint connections require an?
15 inches The distance from the center of a water closet to a sidewall shall not be closer
than?
18 inches The minimum height for a standpipe for a washing machine?
18 inches The required clearance in front of a 3 inch cleanout is?
24 inches Every passage way to an attic water heater shall have solid continuous flooring
not less than?
24 inches The vertical distance between a fixture outlet and the trap weir shall not exceed?
32 inches Above ground PEX piping installed horizontally shall be supported at intervals
not to exceed?
1 inch Water closet tank ballcocks shall be installed with the vacuum breaker critical
level at least _______ above the full opening of the overflow tube.
2 inches The depth of the finished dam or threshold for any shower, measured from the
top of the drain shall not be less than?
2 inches Fixture traps shower have a water seal of not less than?
3/4 of an inch The minimum size of any piping outlet for a freestanding gas range shall be?
4.33 PSI The pressure at the base of a column of water 10 feet high is?
5 feet The minimum vertical length for a gravity type venting system serving a fuel fired
water heater is?
6 feet The maximum distance of a gas shut off valve may be from a gas appliance (
except for range and dryer) is?
6 inches The critical level of a urinal flushometer vacuum breakerto the highest part of the
fixture is?
, 2026 Texas Plumbing Tradesman Exam
10 feet A plumbing vent shall terminate not less than_______ from an air intake.
12 inches Type B water heater vents 4 inches in size shall terminate above a horizontal roof
no less than?
12 x 12 access panel Concealed slip joint connections require an?
15 inches The distance from the center of a water closet to a sidewall shall not be closer
than?
18 inches The minimum height for a standpipe for a washing machine?
18 inches The required clearance in front of a 3 inch cleanout is?
24 inches Every passage way to an attic water heater shall have solid continuous flooring
not less than?
24 inches The vertical distance between a fixture outlet and the trap weir shall not exceed?
32 inches Above ground PEX piping installed horizontally shall be supported at intervals
not to exceed?
