international Plumbing Code Practice
Exams: Key Regulations and Standards
ACTUAL QUESTIONS AND CORRECT
ANSWERS
Tempered water - Correct answers✔✔shall be a maximum of 110°F
Minimum wall thickness of protective sheathing - Correct answers✔✔0.025"
Exterior water supply system piping installation depth - Correct answers✔✔not less than 12
inches below the frost line
Minimum weight of sheet lead for pans - Correct answers✔✔not less than 2 pounds per square
foot
Horizontal support for CPVC pipe 2 inches in diameter - Correct answers✔✔must be supported
every 10 feet
Urinals substitution for water closets in assembly and educational occupancies - Correct
answers✔✔shall NOT be substituted for more than 67% of the required water closets
Minimum size required for a floor drain - Correct answers✔✔1½"
Products or materials required to be third party tested - Correct answers✔✔All of the above
,Minimum number of water closets required for female patrons in a 10,000 sq. ft. museum -
Correct answers✔✔12
Trenches installed parallel to footings - Correct answers✔✔shall not extend below the 45°
bearing plane of the wall
Dishwasher protection against backflow - Correct answers✔✔by a(n) air gap
Materials for proper flashing at roof and vent pipes - Correct answers✔✔lead or other approved
flashings or flashing materials
Maximum horizontal hanger spacing for 1½" inch copper tube - Correct answers✔✔12 feet
Maximum distance patrons of a mall must travel to access toilet facilities - Correct
answers✔✔200 feet
Minimum cross-sectional area for shower compartments - Correct answers✔✔30 square inch
Minimum outlet size for floor drains in coin-operated laundries - Correct answers✔✔3 inches
Minimum slope required for discharge of liquid combustion byproducts from condensing
appliances - Correct answers✔✔2%
Pipes not required to be protected by shield plates - Correct answers✔✔PVC
Number of water closets required for a bar with peak occupancy of 400 - Correct answers✔✔10
, Maximum number of bottled water dispensers allowed to substitute for 15 water fountains -
Correct answers✔✔6
Trough urinals - Correct answers✔✔are permitted
Support for piping - Correct answers✔✔Hangers
required - Correct answers✔✔necessary or obligatory
permitted - Correct answers✔✔allowed or authorized
allowed only when approved by an official - Correct answers✔✔can be accepted only with
official consent
prohibited - Correct answers✔✔not allowed or forbidden
Hangers - Correct answers✔✔supports used to hold pipes in place
Anchors - Correct answers✔✔devices that secure pipes to a fixed point
Supports - Correct answers✔✔structures that hold up pipes
All of the above - Correct answers✔✔includes hangers, anchors, and supports
Exams: Key Regulations and Standards
ACTUAL QUESTIONS AND CORRECT
ANSWERS
Tempered water - Correct answers✔✔shall be a maximum of 110°F
Minimum wall thickness of protective sheathing - Correct answers✔✔0.025"
Exterior water supply system piping installation depth - Correct answers✔✔not less than 12
inches below the frost line
Minimum weight of sheet lead for pans - Correct answers✔✔not less than 2 pounds per square
foot
Horizontal support for CPVC pipe 2 inches in diameter - Correct answers✔✔must be supported
every 10 feet
Urinals substitution for water closets in assembly and educational occupancies - Correct
answers✔✔shall NOT be substituted for more than 67% of the required water closets
Minimum size required for a floor drain - Correct answers✔✔1½"
Products or materials required to be third party tested - Correct answers✔✔All of the above
,Minimum number of water closets required for female patrons in a 10,000 sq. ft. museum -
Correct answers✔✔12
Trenches installed parallel to footings - Correct answers✔✔shall not extend below the 45°
bearing plane of the wall
Dishwasher protection against backflow - Correct answers✔✔by a(n) air gap
Materials for proper flashing at roof and vent pipes - Correct answers✔✔lead or other approved
flashings or flashing materials
Maximum horizontal hanger spacing for 1½" inch copper tube - Correct answers✔✔12 feet
Maximum distance patrons of a mall must travel to access toilet facilities - Correct
answers✔✔200 feet
Minimum cross-sectional area for shower compartments - Correct answers✔✔30 square inch
Minimum outlet size for floor drains in coin-operated laundries - Correct answers✔✔3 inches
Minimum slope required for discharge of liquid combustion byproducts from condensing
appliances - Correct answers✔✔2%
Pipes not required to be protected by shield plates - Correct answers✔✔PVC
Number of water closets required for a bar with peak occupancy of 400 - Correct answers✔✔10
, Maximum number of bottled water dispensers allowed to substitute for 15 water fountains -
Correct answers✔✔6
Trough urinals - Correct answers✔✔are permitted
Support for piping - Correct answers✔✔Hangers
required - Correct answers✔✔necessary or obligatory
permitted - Correct answers✔✔allowed or authorized
allowed only when approved by an official - Correct answers✔✔can be accepted only with
official consent
prohibited - Correct answers✔✔not allowed or forbidden
Hangers - Correct answers✔✔supports used to hold pipes in place
Anchors - Correct answers✔✔devices that secure pipes to a fixed point
Supports - Correct answers✔✔structures that hold up pipes
All of the above - Correct answers✔✔includes hangers, anchors, and supports
