IRC TEST Exam Questions
with Complete Answers
Denning [Date] [Course title]
, what is the minimum size waste trap that can be used for a shower. - Correct Answers: 1.5 (709.1) (p.65)
the minimum required diameter of stack vents and vent stacks of a system with a developed length of
300 feet and total of 42 drainage fixture units connected thereto, is ____________ inch. - Correct
Answers: 2.5 (906.1) (p.75)
what is the drainage fixture unit valve for a 1.5 inch fixture drain. - Correct Answers: 2 (709.2) (p.64)
tempered water shall be delivered from public hand washing facilities through an approved water
______________ that conforms to ASSE 1070 or CSA B125.3. - Correct Answers: temperature limiting
device (416.5) (p.32)
a low pressure cutoff shall be installed on all booster pumps in a water pressure booster system to
prevent creation of a vacuum or negative pressure on the suction side of the pump when a positive
pressure of __________________ or less occurs on the suction side of the pump. - Correct Answers: 10
psi (68.94 kPa) (606.5.5) (p.48)
the maximum allowable horizontal hanger spacing for brass pipe is ______ feet. - Correct Answers: 10
(308.5) (p.19)
in a health care facility, the velocity of airflow in a central vacuum (fluid suction) system shall be less
than _________________ - Correct Answers: 5,000 feet per minute (25 m/s) (713.7.2) (p.68)
any combination of fixtures within two bathroom groups _______________ is permitted to be vented by
a horizontal wet vent. - Correct Answers: located on the same floor level (912.1) (p.73)
cleanouts shall be installed at each change of direction greater than ______________ in the building
sewer, building drain and horizontal waste or soil lines. - Correct Answers: 45 degrees (0.79 rad)
(708.1.4) (p.63)
a 3 inch schedule 40 metallic pipe natural gas line is 400 feet long. The inlet pressure is 1.8 psi. What is
the capacity of gas volume in cubic feet per hour. The fuel is natural gas with and inlet pressure of less
than 2 psi and a pressure drop of 0.3 inches on a water column. - Correct Answers: 1170 (402.4) (p.31)
with Complete Answers
Denning [Date] [Course title]
, what is the minimum size waste trap that can be used for a shower. - Correct Answers: 1.5 (709.1) (p.65)
the minimum required diameter of stack vents and vent stacks of a system with a developed length of
300 feet and total of 42 drainage fixture units connected thereto, is ____________ inch. - Correct
Answers: 2.5 (906.1) (p.75)
what is the drainage fixture unit valve for a 1.5 inch fixture drain. - Correct Answers: 2 (709.2) (p.64)
tempered water shall be delivered from public hand washing facilities through an approved water
______________ that conforms to ASSE 1070 or CSA B125.3. - Correct Answers: temperature limiting
device (416.5) (p.32)
a low pressure cutoff shall be installed on all booster pumps in a water pressure booster system to
prevent creation of a vacuum or negative pressure on the suction side of the pump when a positive
pressure of __________________ or less occurs on the suction side of the pump. - Correct Answers: 10
psi (68.94 kPa) (606.5.5) (p.48)
the maximum allowable horizontal hanger spacing for brass pipe is ______ feet. - Correct Answers: 10
(308.5) (p.19)
in a health care facility, the velocity of airflow in a central vacuum (fluid suction) system shall be less
than _________________ - Correct Answers: 5,000 feet per minute (25 m/s) (713.7.2) (p.68)
any combination of fixtures within two bathroom groups _______________ is permitted to be vented by
a horizontal wet vent. - Correct Answers: located on the same floor level (912.1) (p.73)
cleanouts shall be installed at each change of direction greater than ______________ in the building
sewer, building drain and horizontal waste or soil lines. - Correct Answers: 45 degrees (0.79 rad)
(708.1.4) (p.63)
a 3 inch schedule 40 metallic pipe natural gas line is 400 feet long. The inlet pressure is 1.8 psi. What is
the capacity of gas volume in cubic feet per hour. The fuel is natural gas with and inlet pressure of less
than 2 psi and a pressure drop of 0.3 inches on a water column. - Correct Answers: 1170 (402.4) (p.31)
