IRC TEST QUESTIONS WITH COMPLETE SOLUTIONS

IRC TEST QUESTIONS WITH COMPLETE SOLUTIONS 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) a ____________ flexible water connector installed between the supply pipe and the fixture shall be of an approved type. reduced size (604.5) (p.40) a horizontal stack offset is located more than four branch intervals below the top of the stack, a horizontal branch shall not connect within the horizontal stack offset of within _______________ above or below such offset. 2 feet (610 mm) (711.1) (p.66) at the points of interconnection between the hot and cold water supply piping systems and the individual fixtures, appliances of devices, provisions shall be made to ______________ such piping systems. prevent flow between (604.2) (p.40) the minimum size supply pipe for a urinal, flush tank is ____________ inch(es). 1/2 (604.5) (p.41) materials for specialty fixtures not otherwise covered in this code shall be of stainless steel, soapstone, chemical stoneware or plastic, or ______________, copper-base alloy, nickel-copper alloy, corrosion- resistant steel or other material especially suited to the application for which the fixture is intended. shall be lined with lead (402.2) (p.25) private potable well supplies shall not be developed from a water table less than ______________ below the ground surface. 10 feet (3048 mm) (608.17.3) (p.54) there shall be at least a _________________ clearance in front of the water closet, urinal, lavatory or bidet to any wall, fixture of door. Water closer compartments shall not be less than 30 inches (762 mm) wide and 60 inches (1524 mm) deep. 21-inch (533 mm) (405.3.1) (p.29) the minimum size supply pipe for hose bibs is ___________ inch(es) 1/2 (604.5) (p.41) a type of backflow preventer installed on openings subject to normal atmospheric pressure that prevents backflow by admitting atmospheric pressure through ports to the discharge side of the device. vacuum breaker (section 202 general definitions) (p.15) all storage water heaters operating ____________________ shall be provided with an approved, self-closing (levered) pressured relief valve and temperature relief valve or combination thereof. The relief valve shall conform to ANSIZ21.22. The relief valve shall not be used as a means of controlling thermal expansion. above atmospheric pressure (504.4) (p.38) a combination plumbing fixture is permitted to be installed on one trap, provided that one compartment is not more than 6 inches (152 mm) deeper than the other compartment and the waste outlets are not more than _______________ apart. 30 inches (610 mm) (1002.1.2) (p.83) the maximum allowable vertical hanger spacing midstory guide for sizes 2 inches and smaller for stainless steel drainage systems is _______________ feet. 10 (308.5) (p.19) pipes passing through concrete or cinder walls and floors or other corrosive material shall be protected against external corrosion by a protective sheathing or wrapping or other means that will withstand and reaction from the 2009 IPC 17 . lime and acid of concrete, cinder or other corrosive material. Sheathing or wrapping shall allow for movement including _______________________ of piping. expansion and contraction (305.1) (p.18) condensate drains shall be ________________ as required by the equipment or appliance manufacturer. trapped (314.2.4) (p.22) the dry vent connection to the wet vent shall be an individual vent or common vent to the lavatory, bidet, shower or bathtub. In vertical wet-vent systems, the most upstream fixture drain connection shall be a dry vented fixture drain connection. In horizontal wet-vent systems, not more than ___________ wet-vented fixture drain shall discharge upstream of the dry vented fixture drain connection. one ((912.2.1) (p.77) the potable water supply to automatic fire sprinkler and standpipe systems shall be protected against backflow by a _____________________. Exceptions ignored. double check-valve assembly or a reduced pressure principle backflow preventer (608.16.4) (p.53) urinals shall conform to ANSI Z124.9, ASME A112.19.2M, ASME A112.19.19, CSA B45.1 or CSA B45.5. Urinals shall conform to the water consumption requirements of ____________________. section 604.4 (419.1) (p.33) what minimum size of schedule 40 metallic pipe natural gas line that would be needed if the run is 350 feet long, the inlet pressure is 1.8 psi and the requirement of gas volume in cubic feet per hour is 445. The fuel is natural gas with a pressure drop of 0.3 inches on a water column over the length of the run. 2 (402.4) (p.31) heat exchangers utilizing an essentially toxic transfer fluid shall be separated from the potable water by _______________ construction. double-wall (608.16.3) (p.53) in stream supplies to sterilizers, including those connected by pipes from overhead mains or branches, shall be drained to prevent and moisture from reaching the sterilizer, the condensate drainage from the steam supply shall be discharged by _________________ gravity (422.9.2) (p.34) any pipe that passes under a footing or through a foundation wall shall be provided with a ____________________ built into the foundation wall. relieving arch, or a pipe sleeve (305.3) (p.18)