TRADESMAN EXAM PRACTICE QUESTIONS
AND DETAILED SOLUTIONS
◉ Pipe joint compound shall be applied to ____ threads only (unless
pipe diameter is larger than 1.5").
Answer: male
◉ all pipe must be reamed to the _____ inside diameter of the pipe to
prevent turbulence.
Answer: full
◉ Copper water service pipe must be a minimum of type ____.
Answer: M
◉ Wet vent is also a _____ (only allowed on fixtures on the same
floor).
Answer: waste
◉ vents must not be installed within ___ pipe diameters of the trap
weir.
Answer: two
,◉ a fixture vent shall connect above the ____ of the fixture trap.
Answer: weir
◉ Trap arm connects with - not - or combo.
Answer: Santee, wye
◉ Water closets shall be set no closer than - center to center or -
from a side wall.
Answer: 30", 15"
◉ water closet tanks shall consume no more than - gallons per flush.
Answer: 1.28
◉ -" by -" water closet bend is acceptable.
Answer: 4,3
◉ water closet tanks have to have an - ballcock with a - tube to refill
the trap seal.
Answer: anti-siphon, refill
◉ vents must rise to a minimum of -' vertically and -' above any
parts of the building within 10'.
, Answer: 5',2'
◉ Vents must terminate with an approved - that is installed to meet
manufacturer's instructions.
Answer: cap
◉ T&P relief valves are installed to prevent excessive - and pressure
to prevent explosion.
Answer: temperature
◉ Trap seals - to -. Less will evaporate and deeper seals causes too
little velocity.
Answer: 2",4"
◉ Traps that may evaporate need a trap - to keep the trap seal full.
Answer: primer
◉ T&P relief discharge piping must fall to the - of building (not a
pan).
Answer: outside
◉ T&P discharge piping cannot be - ( downhill ).
Answer: trapped
AND DETAILED SOLUTIONS
◉ Pipe joint compound shall be applied to ____ threads only (unless
pipe diameter is larger than 1.5").
Answer: male
◉ all pipe must be reamed to the _____ inside diameter of the pipe to
prevent turbulence.
Answer: full
◉ Copper water service pipe must be a minimum of type ____.
Answer: M
◉ Wet vent is also a _____ (only allowed on fixtures on the same
floor).
Answer: waste
◉ vents must not be installed within ___ pipe diameters of the trap
weir.
Answer: two
,◉ a fixture vent shall connect above the ____ of the fixture trap.
Answer: weir
◉ Trap arm connects with - not - or combo.
Answer: Santee, wye
◉ Water closets shall be set no closer than - center to center or -
from a side wall.
Answer: 30", 15"
◉ water closet tanks shall consume no more than - gallons per flush.
Answer: 1.28
◉ -" by -" water closet bend is acceptable.
Answer: 4,3
◉ water closet tanks have to have an - ballcock with a - tube to refill
the trap seal.
Answer: anti-siphon, refill
◉ vents must rise to a minimum of -' vertically and -' above any
parts of the building within 10'.
, Answer: 5',2'
◉ Vents must terminate with an approved - that is installed to meet
manufacturer's instructions.
Answer: cap
◉ T&P relief valves are installed to prevent excessive - and pressure
to prevent explosion.
Answer: temperature
◉ Trap seals - to -. Less will evaporate and deeper seals causes too
little velocity.
Answer: 2",4"
◉ Traps that may evaporate need a trap - to keep the trap seal full.
Answer: primer
◉ T&P relief discharge piping must fall to the - of building (not a
pan).
Answer: outside
◉ T&P discharge piping cannot be - ( downhill ).
Answer: trapped
