TEXAS MASTER PLUMBING ACTUAL EXAM WITH 200
QUESTIONS & CORRECT ANSWERS PLUS A
COMPREHENSIVE STUDY GUIDE WITH 200 QUESTIONS
& CORRECT ANSWERS
/.Building sewers shall be tested by completely filling the sewer with water from the
______
A. Lowest to highest point
B. Lowest to at least 5' head
C. Lowest to at least 10' head
D. Lowest to at least ground level - Answer-✅C. Lowest to at least 10' head
/.Hot and cold water piping may be tested with ____
A. 40 psi-150 psi water for 10 minutes
B. 35 psi for at least 15 minutes
C. 50 psi or the working pressure of the water in the system for at least 15 minutes
D. 100 psi of air for at least 10 minutes - Answer-✅C. 50 psi or the working pressure of
the water in the system for at least 15 minutes
/.The required clearance in front of a 3" cleanout is ____
A. 12"
B. 18"
C. 24"
D. 36" - Answer-✅B. 18"
/.A stack as defined in the code is ____
A. Main vent
B. Any vertical vent
C. The vertical main of a soil, waste, or vent piping which extends one or stories
D. Horizontal main of a soil, waste, or vent stack - Answer-✅C. The vertical main of a
soil, waste, or vent piping which extends one or stories
/.Above ground PEX piping installed horizontally shall be supported at intervals not to
exceed _________.
A. Depends on the pipe size
B. 24"
C. 32"
D. 36" - Answer-✅C. 32"
,/.The minimum vertical length for a gravity type venting system serving a fuel fired water
hear is _________.
A. 4'
B. 5'
C. 10'
D. Based on the Btu rating - Answer-✅B. 5'
/.The maximum horizontal distance of a trap arm is measure from the inner edge of the
vent to the _____
A. Weir of the trap
B. Dip of the rap
C. Inlet of the trap
D. None of the above - Answer-✅A. Weir of the trap
/.Sleeves shall be provided to protect piping ____
A. Passing through floors or concrete walls
B. Passing through concrete and masonry walls
C. Passing through wood or concrete walls
D. Passing through all locations listed above - Answer-✅B. Passing through concrete
and masonry walls
/.The drain connecting the compartments of a set of fixtures to its trap is called a/an
_____
A. Continuous waste
B. Combination waste and vent
C. Indirect waste
D. None of the above - Answer-✅A. Continuous waste
/.A device to prevent backflow in to the potable water system is called a _____
A. Backflow connection
B. Backflow preventer
C. Backwater preventer
D. Both A and B - Answer-✅B. Backflow preventer
/.Copper tube and fittings used for drainage and vent piping installed above ground shall
be at least ________
A. Type L
B. Type M
C. Type K
D. Type DWV - Answer-✅D. Type DWV
/.All trenches deeper than the footing of any building or structure and paralleling the
same must be at least _____
A. 45 degrees therefrom
B. 4' therefrom
C. 2' therefrom
, D. 90 degrees thereform - Answer-✅A. 45 degree therefrom
/.The minimum size trap and trap arm for a kitchen sink is _______
A. 1.5 inches
B. 2 inches
C. 1 1/4 inches
D. Either A or B - Answer-✅A. 1.5 inches
/.Horizontal drainage liens connecting with other horizontal drainage lines shall enter
through __________
A. 45 degrees wye branches
B. Sanitary tee branches
C. 1/4 bend with end outlet
D. Side inlet sweep - Answer-✅A. 45 degrees wye branches
/.For each run of horizontal drain piping, the distance between cleanouts shall not
exceed ____
A. 50'
B. 75'
C. 100'
D. None of the above - Answer-✅C. 100'
/.A plumbing vent shall terminate no less than ____
A. 3' from an air intake
B. 10' from an air intake
C. 1' above the roof
D. 3' above a parapet wall - Answer-✅B. 10' from an air intake
/.Each drainage stack which extends 10 or more stores above the building drain shall be
served by _____
A. Cleanouts
B. A parallel vent stack
C. A parallel stack vent
D. Straps every 10 feet - Answer-✅B. A parallel vent stack
/.Chemical or industrial liquid wastes which are likely to damage th public sanitary sewer
system shall _______
A. Be drained into a holding tank
B. Not be used under any conditions
C. Pretreated to render them innocuous
D. Be drained into a storm drain - Answer-✅C. Pretreated to render them innocuous
/.Special venting for island fixtures is used for ______
A. Bathtubs
B. Showers
QUESTIONS & CORRECT ANSWERS PLUS A
COMPREHENSIVE STUDY GUIDE WITH 200 QUESTIONS
& CORRECT ANSWERS
/.Building sewers shall be tested by completely filling the sewer with water from the
______
A. Lowest to highest point
B. Lowest to at least 5' head
C. Lowest to at least 10' head
D. Lowest to at least ground level - Answer-✅C. Lowest to at least 10' head
/.Hot and cold water piping may be tested with ____
A. 40 psi-150 psi water for 10 minutes
B. 35 psi for at least 15 minutes
C. 50 psi or the working pressure of the water in the system for at least 15 minutes
D. 100 psi of air for at least 10 minutes - Answer-✅C. 50 psi or the working pressure of
the water in the system for at least 15 minutes
/.The required clearance in front of a 3" cleanout is ____
A. 12"
B. 18"
C. 24"
D. 36" - Answer-✅B. 18"
/.A stack as defined in the code is ____
A. Main vent
B. Any vertical vent
C. The vertical main of a soil, waste, or vent piping which extends one or stories
D. Horizontal main of a soil, waste, or vent stack - Answer-✅C. The vertical main of a
soil, waste, or vent piping which extends one or stories
/.Above ground PEX piping installed horizontally shall be supported at intervals not to
exceed _________.
A. Depends on the pipe size
B. 24"
C. 32"
D. 36" - Answer-✅C. 32"
,/.The minimum vertical length for a gravity type venting system serving a fuel fired water
hear is _________.
A. 4'
B. 5'
C. 10'
D. Based on the Btu rating - Answer-✅B. 5'
/.The maximum horizontal distance of a trap arm is measure from the inner edge of the
vent to the _____
A. Weir of the trap
B. Dip of the rap
C. Inlet of the trap
D. None of the above - Answer-✅A. Weir of the trap
/.Sleeves shall be provided to protect piping ____
A. Passing through floors or concrete walls
B. Passing through concrete and masonry walls
C. Passing through wood or concrete walls
D. Passing through all locations listed above - Answer-✅B. Passing through concrete
and masonry walls
/.The drain connecting the compartments of a set of fixtures to its trap is called a/an
_____
A. Continuous waste
B. Combination waste and vent
C. Indirect waste
D. None of the above - Answer-✅A. Continuous waste
/.A device to prevent backflow in to the potable water system is called a _____
A. Backflow connection
B. Backflow preventer
C. Backwater preventer
D. Both A and B - Answer-✅B. Backflow preventer
/.Copper tube and fittings used for drainage and vent piping installed above ground shall
be at least ________
A. Type L
B. Type M
C. Type K
D. Type DWV - Answer-✅D. Type DWV
/.All trenches deeper than the footing of any building or structure and paralleling the
same must be at least _____
A. 45 degrees therefrom
B. 4' therefrom
C. 2' therefrom
, D. 90 degrees thereform - Answer-✅A. 45 degree therefrom
/.The minimum size trap and trap arm for a kitchen sink is _______
A. 1.5 inches
B. 2 inches
C. 1 1/4 inches
D. Either A or B - Answer-✅A. 1.5 inches
/.Horizontal drainage liens connecting with other horizontal drainage lines shall enter
through __________
A. 45 degrees wye branches
B. Sanitary tee branches
C. 1/4 bend with end outlet
D. Side inlet sweep - Answer-✅A. 45 degrees wye branches
/.For each run of horizontal drain piping, the distance between cleanouts shall not
exceed ____
A. 50'
B. 75'
C. 100'
D. None of the above - Answer-✅C. 100'
/.A plumbing vent shall terminate no less than ____
A. 3' from an air intake
B. 10' from an air intake
C. 1' above the roof
D. 3' above a parapet wall - Answer-✅B. 10' from an air intake
/.Each drainage stack which extends 10 or more stores above the building drain shall be
served by _____
A. Cleanouts
B. A parallel vent stack
C. A parallel stack vent
D. Straps every 10 feet - Answer-✅B. A parallel vent stack
/.Chemical or industrial liquid wastes which are likely to damage th public sanitary sewer
system shall _______
A. Be drained into a holding tank
B. Not be used under any conditions
C. Pretreated to render them innocuous
D. Be drained into a storm drain - Answer-✅C. Pretreated to render them innocuous
/.Special venting for island fixtures is used for ______
A. Bathtubs
B. Showers
