IRC TEST QUESTIONS COMPLETE WITH A+
GRADED ANSWERS
what is the minimum size waste trap that can be used for a shower.
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.
2.5 (906.1) (p.75)
what is the drainage fixture unit valve for a 1.5 inch fixture drain.
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.
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.
10 psi (68.94 kPa) (606.5.5) (p.48)
the maximum allowable horizontal hanger spacing for brass pipe is ______ feet.
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 _________________
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.
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.
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.
1170 (402.4) (p.31)
the maximum allowable horizontal hanger spacing for pvc pipe is _____________ feet.
4 (308.5) (p.19)
GRADED ANSWERS
what is the minimum size waste trap that can be used for a shower.
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.
2.5 (906.1) (p.75)
what is the drainage fixture unit valve for a 1.5 inch fixture drain.
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.
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.
10 psi (68.94 kPa) (606.5.5) (p.48)
the maximum allowable horizontal hanger spacing for brass pipe is ______ feet.
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 _________________
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.
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.
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.
1170 (402.4) (p.31)
the maximum allowable horizontal hanger spacing for pvc pipe is _____________ feet.
4 (308.5) (p.19)
