Plumbing: Tradesman Texas Practice
Exam and All Correct Answers.
Access cover - Answer A removable plate, usually secured by bolts or screws, to permit
access to a pipe or pipe fitting for the purpose of inspection, repair or cleaning.
Air Admittance Valve (AAV) - Answer One-way valve designed to allow air to enter the
plumbing drainage system when negative pressure develops in the piping system.
Air Break (Drainage System) - Answer An arrangement in which a discharge pipe from a
fixture, appliance or device drains indirectly into a receptor below the flood-level rim of the
receptor, and above the trap seal.
air gap - Answer Indirect waste arrangement where the waste is discharged to the drainage
system through piping that terminates at a specific distance above the flood level rim. ( 2 times
the pipe size, never less than 1 inch)
Area Drain - Answer A receptor designed to collect surface or storm water from an open
area
Backflow - Answer Unwanted reverse flow of contaminants through a cross-connection into
a potable water system. It occurs when the pressure in the potable water supply drops below
the pressure of the contaminated supply.
Back siphonage - Answer backflow due to negative pressure
Back water valve - Answer a device installed in a drainage system to prevent reverse flow .
branch - Answer any part of the piping system other than a main, riser or stack.
Branch interval - Answer A VERTICAL LENGTH OF SOIL OR WASTE STACK at least 8 ft in
height, between the connections of horizontal branches to a drainage system.
Branch vent - Answer A vent connecting one or more individual vents with a vent stack or
stack vent
, Building Drain - Answer That part of the lowest piping of a drainage system that receives the
drainage from soil, waste, and other drainage pipes inside and extends 2 to 5 feet beyond the
exterior of the building.
Building sewer - Answer "That part of the drainage system that extends from the end of
the building drain and conveys its discharge to the public sewer,
private sewer, individual sewage disposal system or other appropriate
point of disposal."
Cleanout - Answer An access opening in the drainage system utilized for the removal of
obstructions.
conductor - Answer A pipe inside the building that conveys storm water from the roof to a
storm drain.
contamination - Answer And impairment of the quality of the potable water that creates an
actual hazard to the public health
cross-connection - Answer Physical link between safe water and dirty water
FIXTURE BRANCH - Answer A drain serving two or more fixtures
that discharges to another drain or to a stack.
FIXTURE DRAIN - Answer Conveys the discharge of only a single trap and can consist of both
horizontal and vertical sections of pipe.
Fixture Supply - Answer water supply pipe connecting the fixture with the fixture branch
Flood level rim - Answer The edge of the receptacle from which water overflows
Horizontal pipe - Answer Pipe or fitting that is installed in a horizontal position, angle of less
than 45 deg with the horizontal plane.
Indirect Waste Pipe - Answer A waste pipe that DOES NOT CONNECT DIRECTLY with the
drainage system but that discharges into the drainage system through an air break or gap into a
trap..
Exam and All Correct Answers.
Access cover - Answer A removable plate, usually secured by bolts or screws, to permit
access to a pipe or pipe fitting for the purpose of inspection, repair or cleaning.
Air Admittance Valve (AAV) - Answer One-way valve designed to allow air to enter the
plumbing drainage system when negative pressure develops in the piping system.
Air Break (Drainage System) - Answer An arrangement in which a discharge pipe from a
fixture, appliance or device drains indirectly into a receptor below the flood-level rim of the
receptor, and above the trap seal.
air gap - Answer Indirect waste arrangement where the waste is discharged to the drainage
system through piping that terminates at a specific distance above the flood level rim. ( 2 times
the pipe size, never less than 1 inch)
Area Drain - Answer A receptor designed to collect surface or storm water from an open
area
Backflow - Answer Unwanted reverse flow of contaminants through a cross-connection into
a potable water system. It occurs when the pressure in the potable water supply drops below
the pressure of the contaminated supply.
Back siphonage - Answer backflow due to negative pressure
Back water valve - Answer a device installed in a drainage system to prevent reverse flow .
branch - Answer any part of the piping system other than a main, riser or stack.
Branch interval - Answer A VERTICAL LENGTH OF SOIL OR WASTE STACK at least 8 ft in
height, between the connections of horizontal branches to a drainage system.
Branch vent - Answer A vent connecting one or more individual vents with a vent stack or
stack vent
, Building Drain - Answer That part of the lowest piping of a drainage system that receives the
drainage from soil, waste, and other drainage pipes inside and extends 2 to 5 feet beyond the
exterior of the building.
Building sewer - Answer "That part of the drainage system that extends from the end of
the building drain and conveys its discharge to the public sewer,
private sewer, individual sewage disposal system or other appropriate
point of disposal."
Cleanout - Answer An access opening in the drainage system utilized for the removal of
obstructions.
conductor - Answer A pipe inside the building that conveys storm water from the roof to a
storm drain.
contamination - Answer And impairment of the quality of the potable water that creates an
actual hazard to the public health
cross-connection - Answer Physical link between safe water and dirty water
FIXTURE BRANCH - Answer A drain serving two or more fixtures
that discharges to another drain or to a stack.
FIXTURE DRAIN - Answer Conveys the discharge of only a single trap and can consist of both
horizontal and vertical sections of pipe.
Fixture Supply - Answer water supply pipe connecting the fixture with the fixture branch
Flood level rim - Answer The edge of the receptacle from which water overflows
Horizontal pipe - Answer Pipe or fitting that is installed in a horizontal position, angle of less
than 45 deg with the horizontal plane.
Indirect Waste Pipe - Answer A waste pipe that DOES NOT CONNECT DIRECTLY with the
drainage system but that discharges into the drainage system through an air break or gap into a
trap..
