TEXAS STATE PLUMBING INSPECTORS 2025 QUESTIONS
WITH SOLUTIONS RATED A+
✔✔The passageway shall be not less than ____ inches in height and _____ in width
and not more than ______ feet in length when measured along the centerline of the
passageway from the opening to the water heater - ✔✔30,22,20
✔✔A vacuum relief valve must be installed in _____ water heaters and tanks connected
to water heaters - ✔✔Bottom fed
✔✔A water heater vented into a fireplace or into a chimney serving a fireplace is -
✔✔prohibited
✔✔A single wall vent connector shall not originate in a - ✔✔Unoccupied attic
✔✔A water heater located in a garage within the vehicle path must be - ✔✔Suitably
guarded against damage
✔✔A final water heater inspection shall be made only after - ✔✔All work authorized by
permit has been installed
✔✔In buildings with unusually tight construction combustion air shall be obtained from -
✔✔The outside
✔✔Water heaters which depend on combustion air may be installed in a - ✔✔Garage
✔✔Discharge from a T&P valve into a water heater pan is - ✔✔Prohibited
✔✔The minimum clearance between any single wall metal vent connector and
combustible material is - ✔✔6 in
✔✔The distance from the passageway opening to the water heater shall not be more
than - ✔✔20 ft
✔✔The minimum clearance between the ceiling space and double wall vent pipe is -
✔✔1 in or listed in vent pipe
✔✔Urinals require a water supply with a minimum diameter of - ✔✔3/4 in
✔✔Which of the following pertains toa code requirement on the use of flexible water
connections - ✔✔Flexible water conections must be readily accessible
, ✔✔The maximum allowable water pressure in residential water distribution systems is -
✔✔80 psi
✔✔A barometric loop is ____ above the highest piping - ✔✔33.9 ft
✔✔A pressure vacuum breaker is listed for - ✔✔Backsiphonage only
✔✔Sill cocks require - ✔✔A backflow preventer
✔✔PEX pipe must be separated from a water heater by some type of metal connector
at least how long - ✔✔18 in
✔✔Inlet and outlet copper water connections to an electric water heater should contain -
✔✔Dielectric unions
✔✔You want to run a water service line above a sewer pipe in the same trench. How
much dirt must be laid between the pipes - ✔✔12 in
✔✔A reduced pressure principle assembly is listed for - ✔✔Backsiphonage and
backpressure
✔✔If a water service line and a sewer pipe cannot be installed in the same trench at
different levels, they can be installed at the same level in the ground as long as how
much earth separates them - ✔✔5 ft
✔✔Pure water at sea level weights how much per cubic foot - ✔✔62.4
✔✔The minimum size of a water service is - ✔✔3/4 in
✔✔An air gap has a minimum requirement of at least 1 in or how much the diameter of
the pipe - ✔✔2
✔✔A negative pressure that can cause backflow is known as - ✔✔Backsiphonage
✔✔Solder joints shall be according to ASTM - ✔✔B-828
✔✔What color shall be used to identify reclaimed, rain and gray water distribution
systems - ✔✔Purple
✔✔Full open valves shall be isntalled in the following locations - ✔✔On the discharge
side of every water meter
✔✔Selecting an expansion tank is based on - ✔✔Water pressure and volume
WITH SOLUTIONS RATED A+
✔✔The passageway shall be not less than ____ inches in height and _____ in width
and not more than ______ feet in length when measured along the centerline of the
passageway from the opening to the water heater - ✔✔30,22,20
✔✔A vacuum relief valve must be installed in _____ water heaters and tanks connected
to water heaters - ✔✔Bottom fed
✔✔A water heater vented into a fireplace or into a chimney serving a fireplace is -
✔✔prohibited
✔✔A single wall vent connector shall not originate in a - ✔✔Unoccupied attic
✔✔A water heater located in a garage within the vehicle path must be - ✔✔Suitably
guarded against damage
✔✔A final water heater inspection shall be made only after - ✔✔All work authorized by
permit has been installed
✔✔In buildings with unusually tight construction combustion air shall be obtained from -
✔✔The outside
✔✔Water heaters which depend on combustion air may be installed in a - ✔✔Garage
✔✔Discharge from a T&P valve into a water heater pan is - ✔✔Prohibited
✔✔The minimum clearance between any single wall metal vent connector and
combustible material is - ✔✔6 in
✔✔The distance from the passageway opening to the water heater shall not be more
than - ✔✔20 ft
✔✔The minimum clearance between the ceiling space and double wall vent pipe is -
✔✔1 in or listed in vent pipe
✔✔Urinals require a water supply with a minimum diameter of - ✔✔3/4 in
✔✔Which of the following pertains toa code requirement on the use of flexible water
connections - ✔✔Flexible water conections must be readily accessible
, ✔✔The maximum allowable water pressure in residential water distribution systems is -
✔✔80 psi
✔✔A barometric loop is ____ above the highest piping - ✔✔33.9 ft
✔✔A pressure vacuum breaker is listed for - ✔✔Backsiphonage only
✔✔Sill cocks require - ✔✔A backflow preventer
✔✔PEX pipe must be separated from a water heater by some type of metal connector
at least how long - ✔✔18 in
✔✔Inlet and outlet copper water connections to an electric water heater should contain -
✔✔Dielectric unions
✔✔You want to run a water service line above a sewer pipe in the same trench. How
much dirt must be laid between the pipes - ✔✔12 in
✔✔A reduced pressure principle assembly is listed for - ✔✔Backsiphonage and
backpressure
✔✔If a water service line and a sewer pipe cannot be installed in the same trench at
different levels, they can be installed at the same level in the ground as long as how
much earth separates them - ✔✔5 ft
✔✔Pure water at sea level weights how much per cubic foot - ✔✔62.4
✔✔The minimum size of a water service is - ✔✔3/4 in
✔✔An air gap has a minimum requirement of at least 1 in or how much the diameter of
the pipe - ✔✔2
✔✔A negative pressure that can cause backflow is known as - ✔✔Backsiphonage
✔✔Solder joints shall be according to ASTM - ✔✔B-828
✔✔What color shall be used to identify reclaimed, rain and gray water distribution
systems - ✔✔Purple
✔✔Full open valves shall be isntalled in the following locations - ✔✔On the discharge
side of every water meter
✔✔Selecting an expansion tank is based on - ✔✔Water pressure and volume
