Master Plumbing WSSC Questions With
Complete Solutions
Waste water discharged into the building drainage system shall not be over _______ *F correct answer: 140
A water tank holds 50 gallons of water. How much does the 50 gallons of water weigh? correct answer: 417 lbs
Exterior walls may be notched to a depth exceeding _______________ percent of its width. correct answer: 25
According to the WSSC PFGC, a full flow building water service valve shall be installed within _____ feet of where the water service enters the building. correct answer: 3'
According to the WSSC PFGC, water meters installed inside of buildings shall be located in an area capable of maintaining _____ *F. correct answer: 50
In Prince George and Montgomery County, water service piping
shall be not less than _____ inches below grade. correct answer: 30
A cylindrical tank is 22 inches in diameter and 5 feet tall. How many gallons of water will it hold? correct answer: 98
The best method of backflow protection is an? correct answer: Air-gap Horizontal drainage piping 4 inches in diameter shall have a minimum slope of _____ per foot. correct answer: 1/8
Water hammer arrestors shall conform to ASSE _______ correct
answer: 1010
A connection between a vent pipe and a vent stack or stack vent shall be at least _____ inches above the flood level rim of the highest fixture served by the vent. correct answer: 6 inches
Air admittance valves shall be installed a minimum of ______ inches above insulation materials. correct answer: 6
A water supply system test done with air shall be at not less than
____ PSI. correct answer: 50
If you install 80 feet of sewer at 1/4" per foot how many inches of fall in the run? correct answer: 20
The minimum size water supply pipe to a bidet shall be _____ inch. correct answer: 3/8
Horizontal drains shall have cleanouts not more than ______ feet apart. correct answer: 100
Standpipes shall extend a maximum of ____ inches above the trap weir. correct answer: 42
Shower compartments shall not be less than _____ inches in minimum dimension. correct answer: 30
Complete Solutions
Waste water discharged into the building drainage system shall not be over _______ *F correct answer: 140
A water tank holds 50 gallons of water. How much does the 50 gallons of water weigh? correct answer: 417 lbs
Exterior walls may be notched to a depth exceeding _______________ percent of its width. correct answer: 25
According to the WSSC PFGC, a full flow building water service valve shall be installed within _____ feet of where the water service enters the building. correct answer: 3'
According to the WSSC PFGC, water meters installed inside of buildings shall be located in an area capable of maintaining _____ *F. correct answer: 50
In Prince George and Montgomery County, water service piping
shall be not less than _____ inches below grade. correct answer: 30
A cylindrical tank is 22 inches in diameter and 5 feet tall. How many gallons of water will it hold? correct answer: 98
The best method of backflow protection is an? correct answer: Air-gap Horizontal drainage piping 4 inches in diameter shall have a minimum slope of _____ per foot. correct answer: 1/8
Water hammer arrestors shall conform to ASSE _______ correct
answer: 1010
A connection between a vent pipe and a vent stack or stack vent shall be at least _____ inches above the flood level rim of the highest fixture served by the vent. correct answer: 6 inches
Air admittance valves shall be installed a minimum of ______ inches above insulation materials. correct answer: 6
A water supply system test done with air shall be at not less than
____ PSI. correct answer: 50
If you install 80 feet of sewer at 1/4" per foot how many inches of fall in the run? correct answer: 20
The minimum size water supply pipe to a bidet shall be _____ inch. correct answer: 3/8
Horizontal drains shall have cleanouts not more than ______ feet apart. correct answer: 100
Standpipes shall extend a maximum of ____ inches above the trap weir. correct answer: 42
Shower compartments shall not be less than _____ inches in minimum dimension. correct answer: 30
