ICC EXAM 1 QUESTIONS AND
ANSWERS
"Where earthquake loads are applicable in accordance with the building code, plumbing
piping supports must be designed and installed for the seismic forces in accordance
with the _____________________.
A. International Earthquake Code
B. Seismic Support Mechanical Handbook
C. International Building Code
D. any of these !" - Correct Answers -C
"What is the maximum number of drainage fixture units allowed to discharge into one
branch interval of a waste drainage system if the waste stack size is 1.5 inches.
A. 1
B. 2
C. 4
D. 8!" - Correct Answers -A )
"Waste outlets in showers must have removable strainers not less than
_________________ with strainer openings not less than 0.25 inch (6.4 mm) in
minimum dimension.
A. 1 1/4 inches (32 mm)
B. 1 1/2 inches (38 mm)
C. 2 inches (51 mm)
D. 3 inches (76 mm) in diameter!" - Correct Answers -D
"All hospitals must have _______________ installed in such a manner so as to
minimize the potential for an interruption of the supply of water in the event of a water
main or water service pipe failure.
A. an emergency private well or storage tank
B. oversized water service entrance piping
C. two water service pipes
D. any of these!" - Correct Answers -C
" Sheet copper for general plumbing applications shall not weigh less than
____________________.
A. 8 ounces per square foot (2.7 kg/m2).
,B. 4 ounces per square foot (1.6kg/m2).
C. 12 ounces per square foot (3.7 kg/m2).
D. none of these!" - Correct Answers -C
"When testing a drainage system each section must be tested with not less than a
______________ head of water.
A. 2-foot (610 mm)
B. 5-foot (1524 mm)
C. 10-foot (3048 mm)
D. 20-foot (6096 mm)!" - Correct Answers -C )
"The principal pipe artery to which branches are connected
A. MAIN
B. VENT
C. STACK
D. INTERCEPTOR!" - Correct Answers -A )
"Water, soil and waste pipes must not be installed outside of a building, in attics or crawl
spaces, concealed in outsidewalls, or in any other place subjected to freezing
temperature unless adequate provision is made to protect such pipes from freezing by
__________________________.
A. heat
B. insulation
C. fiberglass
D. insulation or heat or both!" - Correct Answers -D
"Each fixture trap must have a liquid seal of not less than _______ and not more than
_______, or deeper for special designs relating to accessible fixtures.
A. 1 inches (25 mm), 4 inches (102 mm)
B. 2 inches (51 mm), 4 inches (102 mm)
C. 4 inches (102 mm), 8 inches (204 mm)
D. 2 inches (51 mm), 8 inches (204 mm)!" - Correct Answers -B
"The unobstructed vertical distance through the free atmosphere between the lowest
opening from any pipe or faucet supplying water to a tank, plumbing fixture or other
device and the flood level rim of the receptacle.
A. AIR GAP (Drainage System).
B. AIR GAP (Water Distribution System).
C. ANTISIPHON
D. BACKFLOW!" - Correct Answers -B
"One flushing devices for water closets and urinals, can not serve more than _____
fixtures).
A. one
B. two
C. four
, D. eight!" - Correct Answers -A
"For a horizontal stack offset that is located more than four branch intervals below the
top of the stack, the portion of the stack above the offset must be sized as for a vertical
stack based on ____________________
A. the size of the offset
B. the total number of drainage fixture units above the offset.
C. the 2 foot rule
D. none of the above!" - Correct Answers -B
"Conductor pipes for storm drains must not be used as
__________________, and vent pipes shall not be used as ____________.
A. soil, waste or vent pipes, conductors
B. storm sewer drain pipes, conductors
C. conductor pipes, conductor pipes
D. any of these!" - Correct Answers -A
"Cleanouts must be installed at each change of direction greater than 45 degrees (0.79
rad) in the building sewer, building drain and horizontal waste or soil lines. Where more
than one change of direction occurs in a run of piping, only one cleanout shall be
required for each
___________________ of developed length of the drainage piping.
A. 40 feet (12 192 mm)
B. 80 feet (24 384 mm)
C. 100 feet (30 480 mm)
D. 200 feet (60 960 mm!" - Correct Answers -A
"The water service pipe must be sized to supply water to a structure in the quantities
and at the pressures required in the International Plumbing Code [IPC]. The minimum
diameter of water service pipe is
_________ .
A. 3/4 inch (19.1 mm)
B. 1 inch (25.4 mm)
C. 1.25 inch (32)
D. 1.5 inches (38 mm)!" - Correct Answers -A
"Each water closet, urinal, clinical sink and any plumbing fixture that depends on
_____________ to discharge the fixture contents to the drainage system must be
provided with a flushometer valve, flushometer tank or a flush tank designed and
installed to supply water in quantity and rate of flow to flush the contents of the fixture,
cleanse the fixture and refill the fixture trap.
A. trap siphonage
B. gravity
C. overflow drainage
D. none of these!" - Correct Answers -A
ANSWERS
"Where earthquake loads are applicable in accordance with the building code, plumbing
piping supports must be designed and installed for the seismic forces in accordance
with the _____________________.
A. International Earthquake Code
B. Seismic Support Mechanical Handbook
C. International Building Code
D. any of these !" - Correct Answers -C
"What is the maximum number of drainage fixture units allowed to discharge into one
branch interval of a waste drainage system if the waste stack size is 1.5 inches.
A. 1
B. 2
C. 4
D. 8!" - Correct Answers -A )
"Waste outlets in showers must have removable strainers not less than
_________________ with strainer openings not less than 0.25 inch (6.4 mm) in
minimum dimension.
A. 1 1/4 inches (32 mm)
B. 1 1/2 inches (38 mm)
C. 2 inches (51 mm)
D. 3 inches (76 mm) in diameter!" - Correct Answers -D
"All hospitals must have _______________ installed in such a manner so as to
minimize the potential for an interruption of the supply of water in the event of a water
main or water service pipe failure.
A. an emergency private well or storage tank
B. oversized water service entrance piping
C. two water service pipes
D. any of these!" - Correct Answers -C
" Sheet copper for general plumbing applications shall not weigh less than
____________________.
A. 8 ounces per square foot (2.7 kg/m2).
,B. 4 ounces per square foot (1.6kg/m2).
C. 12 ounces per square foot (3.7 kg/m2).
D. none of these!" - Correct Answers -C
"When testing a drainage system each section must be tested with not less than a
______________ head of water.
A. 2-foot (610 mm)
B. 5-foot (1524 mm)
C. 10-foot (3048 mm)
D. 20-foot (6096 mm)!" - Correct Answers -C )
"The principal pipe artery to which branches are connected
A. MAIN
B. VENT
C. STACK
D. INTERCEPTOR!" - Correct Answers -A )
"Water, soil and waste pipes must not be installed outside of a building, in attics or crawl
spaces, concealed in outsidewalls, or in any other place subjected to freezing
temperature unless adequate provision is made to protect such pipes from freezing by
__________________________.
A. heat
B. insulation
C. fiberglass
D. insulation or heat or both!" - Correct Answers -D
"Each fixture trap must have a liquid seal of not less than _______ and not more than
_______, or deeper for special designs relating to accessible fixtures.
A. 1 inches (25 mm), 4 inches (102 mm)
B. 2 inches (51 mm), 4 inches (102 mm)
C. 4 inches (102 mm), 8 inches (204 mm)
D. 2 inches (51 mm), 8 inches (204 mm)!" - Correct Answers -B
"The unobstructed vertical distance through the free atmosphere between the lowest
opening from any pipe or faucet supplying water to a tank, plumbing fixture or other
device and the flood level rim of the receptacle.
A. AIR GAP (Drainage System).
B. AIR GAP (Water Distribution System).
C. ANTISIPHON
D. BACKFLOW!" - Correct Answers -B
"One flushing devices for water closets and urinals, can not serve more than _____
fixtures).
A. one
B. two
C. four
, D. eight!" - Correct Answers -A
"For a horizontal stack offset that is located more than four branch intervals below the
top of the stack, the portion of the stack above the offset must be sized as for a vertical
stack based on ____________________
A. the size of the offset
B. the total number of drainage fixture units above the offset.
C. the 2 foot rule
D. none of the above!" - Correct Answers -B
"Conductor pipes for storm drains must not be used as
__________________, and vent pipes shall not be used as ____________.
A. soil, waste or vent pipes, conductors
B. storm sewer drain pipes, conductors
C. conductor pipes, conductor pipes
D. any of these!" - Correct Answers -A
"Cleanouts must be installed at each change of direction greater than 45 degrees (0.79
rad) in the building sewer, building drain and horizontal waste or soil lines. Where more
than one change of direction occurs in a run of piping, only one cleanout shall be
required for each
___________________ of developed length of the drainage piping.
A. 40 feet (12 192 mm)
B. 80 feet (24 384 mm)
C. 100 feet (30 480 mm)
D. 200 feet (60 960 mm!" - Correct Answers -A
"The water service pipe must be sized to supply water to a structure in the quantities
and at the pressures required in the International Plumbing Code [IPC]. The minimum
diameter of water service pipe is
_________ .
A. 3/4 inch (19.1 mm)
B. 1 inch (25.4 mm)
C. 1.25 inch (32)
D. 1.5 inches (38 mm)!" - Correct Answers -A
"Each water closet, urinal, clinical sink and any plumbing fixture that depends on
_____________ to discharge the fixture contents to the drainage system must be
provided with a flushometer valve, flushometer tank or a flush tank designed and
installed to supply water in quantity and rate of flow to flush the contents of the fixture,
cleanse the fixture and refill the fixture trap.
A. trap siphonage
B. gravity
C. overflow drainage
D. none of these!" - Correct Answers -A
