TEXAS MASTER PLUMBING TEST QUESTIONS AND ANSWERS GRADED A+
air gap - (ANSWER)the vertical distance between the opening of the water supply and the flood level rim
of a receptacle
branch - (ANSWER)any part of the piping system other than a main, riser or stack
Branch vent - (ANSWER)A vent connecting one or more individual vents with a vent stack or stack vent
Building Drain - (ANSWER)is the lowest part of the drainage system which receives waste from soil and
waste pipes and connects to the building sewer
Building sewer - (ANSWER)is drainage piping that conveys waste from the building drain to the public
sewer or disposal system
Cleanout - (ANSWER)Access opening in the drainage system used to remove obstructions
Combination fixture - (ANSWER)Two or three compartment sink drained by a continuous waste
connected to one trap
Combination Waste and Vent system - (ANSWER)A horizontal wet venting system for sinks and floor
drains
Common Vent - (ANSWER)A single vent serving as the vent for two fixture drains
critical level - (ANSWER)is an elevation mark on a vacuum breaker setting the minimum elevation the
device can be installed above the flood level rim of a fixture
cross-connection - (ANSWER)is an actual or potential tie between potable water and any source of
pollution or contamination
Developed Length - (ANSWER)A measurement of piping taken along the centerline of pipe and fittings
, TEXAS MASTER PLUMBING TEST QUESTIONS AND ANSWERS GRADED A+
drain - (ANSWER)Any pipe that conveys waste water in the drainage system
Indirect Waste - (ANSWER)Is waste pipe that drains through an air gap to the drainage system
Individual vent - (ANSWER)A pipe installed to vent one fixture trap. It may connect to the vent system
above the fixture or terminate in the open air.
main - (ANSWER)Is the primary or principal pipe to which branches are connected
potable water - (ANSWER)Is water that is sufficiently free of impurities to meet public health standards
Rough in - (ANSWER)Parts of the plumbing system that are installed prior to the installation of fixtures.
Soil Pipe - (ANSWER)Is drain pipe conveying sewage containing fecal matter
Stack Vent - (ANSWER)The extension of a soil or waste stack above the highest fixture served
trap - (ANSWER)Is a device that provides a water seal to prevent the passage of sewer gas and allow the
passage of waste
Trap seal - (ANSWER)distance from weir to top of the dip of the trap
Vacuum Breaker - (ANSWER)is a backflow preventer that allows air to a vacuum being pulled on a
system
vent stack - (ANSWER)A vertical vent pipe to provide circulation of air to and from the drainage system
Vertical pipe - (ANSWER)Pipe that makes an angle of 45 degrees or more with the horizontal pipe
air gap - (ANSWER)the vertical distance between the opening of the water supply and the flood level rim
of a receptacle
branch - (ANSWER)any part of the piping system other than a main, riser or stack
Branch vent - (ANSWER)A vent connecting one or more individual vents with a vent stack or stack vent
Building Drain - (ANSWER)is the lowest part of the drainage system which receives waste from soil and
waste pipes and connects to the building sewer
Building sewer - (ANSWER)is drainage piping that conveys waste from the building drain to the public
sewer or disposal system
Cleanout - (ANSWER)Access opening in the drainage system used to remove obstructions
Combination fixture - (ANSWER)Two or three compartment sink drained by a continuous waste
connected to one trap
Combination Waste and Vent system - (ANSWER)A horizontal wet venting system for sinks and floor
drains
Common Vent - (ANSWER)A single vent serving as the vent for two fixture drains
critical level - (ANSWER)is an elevation mark on a vacuum breaker setting the minimum elevation the
device can be installed above the flood level rim of a fixture
cross-connection - (ANSWER)is an actual or potential tie between potable water and any source of
pollution or contamination
Developed Length - (ANSWER)A measurement of piping taken along the centerline of pipe and fittings
, TEXAS MASTER PLUMBING TEST QUESTIONS AND ANSWERS GRADED A+
drain - (ANSWER)Any pipe that conveys waste water in the drainage system
Indirect Waste - (ANSWER)Is waste pipe that drains through an air gap to the drainage system
Individual vent - (ANSWER)A pipe installed to vent one fixture trap. It may connect to the vent system
above the fixture or terminate in the open air.
main - (ANSWER)Is the primary or principal pipe to which branches are connected
potable water - (ANSWER)Is water that is sufficiently free of impurities to meet public health standards
Rough in - (ANSWER)Parts of the plumbing system that are installed prior to the installation of fixtures.
Soil Pipe - (ANSWER)Is drain pipe conveying sewage containing fecal matter
Stack Vent - (ANSWER)The extension of a soil or waste stack above the highest fixture served
trap - (ANSWER)Is a device that provides a water seal to prevent the passage of sewer gas and allow the
passage of waste
Trap seal - (ANSWER)distance from weir to top of the dip of the trap
Vacuum Breaker - (ANSWER)is a backflow preventer that allows air to a vacuum being pulled on a
system
vent stack - (ANSWER)A vertical vent pipe to provide circulation of air to and from the drainage system
Vertical pipe - (ANSWER)Pipe that makes an angle of 45 degrees or more with the horizontal pipe
