TEXAS PLUMBING MASTER EXAM 2026 NEWEST EXAM
QUESTIONS AND CORRECT DETAILED ANSWERS
(VERIFIED ANSWERS) ALREADY GRADED A+
air gap - ANSWERS-the vertical distance between the opening of the water supply and the flood
level rim of a receptacle
branch - ANSWERS-any part of the piping system other than a main, riser or stack
Branch vent - ANSWERS-A vent connecting one or more individual vents with a vent stack or
stack vent
Building Drain - ANSWERS-is the lowest part of the drainage system which receives waste from
soil and waste pipes and connects to the building sewer
Building sewer - ANSWERS-is drainage piping that conveys waste from the building drain to the
public sewer or disposal system
Cleanout - ANSWERS-Access opening in the drainage system used to remove obstructions
Combination fixture - ANSWERS-Two or three compartment sink drained by a continuous waste
connected to one trap
Combination Waste and Vent system - ANSWERS-A horizontal wet venting system for sinks and
floor drains
, Common Vent - ANSWERS-A single vent serving as the vent for two fixture drains
critical level - ANSWERS-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 - ANSWERS-is an actual or potential tie between potable water and any source
of pollution or contamination
Developed Length - ANSWERS-A measurement of piping taken along the centerline of pipe and
fittings
drain - ANSWERS-Any pipe that conveys waste water in the drainage system
Indirect Waste - ANSWERS-Is waste pipe that drains through an air gap to the drainage system
Individual vent - ANSWERS-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 - ANSWERS-Is the primary or principal pipe to which branches are connected
potable water - ANSWERS-Is water that is sufficiently free of impurities to meet public health
standards
Rough in - ANSWERS-Parts of the plumbing system that are installed prior to the installation of
fixtures.
Soil Pipe - ANSWERS-Is drain pipe conveying sewage containing fecal matter
QUESTIONS AND CORRECT DETAILED ANSWERS
(VERIFIED ANSWERS) ALREADY GRADED A+
air gap - ANSWERS-the vertical distance between the opening of the water supply and the flood
level rim of a receptacle
branch - ANSWERS-any part of the piping system other than a main, riser or stack
Branch vent - ANSWERS-A vent connecting one or more individual vents with a vent stack or
stack vent
Building Drain - ANSWERS-is the lowest part of the drainage system which receives waste from
soil and waste pipes and connects to the building sewer
Building sewer - ANSWERS-is drainage piping that conveys waste from the building drain to the
public sewer or disposal system
Cleanout - ANSWERS-Access opening in the drainage system used to remove obstructions
Combination fixture - ANSWERS-Two or three compartment sink drained by a continuous waste
connected to one trap
Combination Waste and Vent system - ANSWERS-A horizontal wet venting system for sinks and
floor drains
, Common Vent - ANSWERS-A single vent serving as the vent for two fixture drains
critical level - ANSWERS-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 - ANSWERS-is an actual or potential tie between potable water and any source
of pollution or contamination
Developed Length - ANSWERS-A measurement of piping taken along the centerline of pipe and
fittings
drain - ANSWERS-Any pipe that conveys waste water in the drainage system
Indirect Waste - ANSWERS-Is waste pipe that drains through an air gap to the drainage system
Individual vent - ANSWERS-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 - ANSWERS-Is the primary or principal pipe to which branches are connected
potable water - ANSWERS-Is water that is sufficiently free of impurities to meet public health
standards
Rough in - ANSWERS-Parts of the plumbing system that are installed prior to the installation of
fixtures.
Soil Pipe - ANSWERS-Is drain pipe conveying sewage containing fecal matter
