TX Journeyman Plumber Homework Questions 2026–2027
| Comprehensive Study Guide & Practice Review
Hot & cold water piping may be tested with _____. - correct answers -50 psi or the working pressure of
the water in the system for at least 15 mins
A stack as defined in the code is _____. - correct answers -the vertical main of a soil, waste or vent
piping which extends one or more stories
A device to prevent backflow into potable water system is called a _____. - correct answers -backflow
connection/backflow preventer
Copper tube and fittings used for drainage and vent piping installed above ground shall be at least
_____. - correct answers -copper DWV tube
Horizontal drainage lines connecting with horizontal drainage lines shall enter through _____. - correct
answers -45 degree wye branches
The vertical distance between a fixture outlet and the trap weir shall not exceed _____. - correct
answers -24 inches
Concealed slip joint connections require a _____. - correct answers -12x12 access panel
The critical level of a urinal flushometer vacuum breaker to the highest part of the fixture is _____. -
correct answers -6 inches
1
, Water closet tank ballcocks shall be installed with the vacuum breaker critical level at least _____. -
correct answers -1 inch above the full opening of the overflow tube
The maximum distance of a gas shutoff valve from a gas appliance (except for range and dryer
connections) is _____. - correct answers -6 feet
The minimum size of any piping outlet for a free standing gas range shall be _____. - correct answers -
3/4 of an inch
A plumbing permit expires if work authorized by the permit is not started within _____. - correct
answers -180 days
A fixture trap is vented to _____. - correct answers -prevent the loss of trap seal, reduce noise in the
drainage system & prevent siphonage or backpressure to a trap
Standpipe receptors for clothes washers shall extend above the trap no less than ______. - correct
answers -18 inches
Where nonferrous pipe is brazed for gas piping, the brazing materials shall have a melting point in
excess of _____ degrees Farenheit. - correct answers -140
The principal artery of the venting system to which branches may be connected is called ____. - correct
answers -main vent
A plugged fitting located at the base of all soil stacks is called _____. - correct answers -a stack cleanout
2
| Comprehensive Study Guide & Practice Review
Hot & cold water piping may be tested with _____. - correct answers -50 psi or the working pressure of
the water in the system for at least 15 mins
A stack as defined in the code is _____. - correct answers -the vertical main of a soil, waste or vent
piping which extends one or more stories
A device to prevent backflow into potable water system is called a _____. - correct answers -backflow
connection/backflow preventer
Copper tube and fittings used for drainage and vent piping installed above ground shall be at least
_____. - correct answers -copper DWV tube
Horizontal drainage lines connecting with horizontal drainage lines shall enter through _____. - correct
answers -45 degree wye branches
The vertical distance between a fixture outlet and the trap weir shall not exceed _____. - correct
answers -24 inches
Concealed slip joint connections require a _____. - correct answers -12x12 access panel
The critical level of a urinal flushometer vacuum breaker to the highest part of the fixture is _____. -
correct answers -6 inches
1
, Water closet tank ballcocks shall be installed with the vacuum breaker critical level at least _____. -
correct answers -1 inch above the full opening of the overflow tube
The maximum distance of a gas shutoff valve from a gas appliance (except for range and dryer
connections) is _____. - correct answers -6 feet
The minimum size of any piping outlet for a free standing gas range shall be _____. - correct answers -
3/4 of an inch
A plumbing permit expires if work authorized by the permit is not started within _____. - correct
answers -180 days
A fixture trap is vented to _____. - correct answers -prevent the loss of trap seal, reduce noise in the
drainage system & prevent siphonage or backpressure to a trap
Standpipe receptors for clothes washers shall extend above the trap no less than ______. - correct
answers -18 inches
Where nonferrous pipe is brazed for gas piping, the brazing materials shall have a melting point in
excess of _____ degrees Farenheit. - correct answers -140
The principal artery of the venting system to which branches may be connected is called ____. - correct
answers -main vent
A plugged fitting located at the base of all soil stacks is called _____. - correct answers -a stack cleanout
2
