2015 P2 Commercial Plumbing Inspector Exam Quiz Welcome to your free 2015 P2 Commercial Plumbing Inspector Exam Quiz REQUIRED - Enter your email address to receive a printable copy of your test results. 1. A flush tank's fill valve backflow preventer must be __________ or more above the overflow pipe's full opening. 1/2 inch 1 inch 1 1/2 inch 2 inch 2. What is the maximum projected roof area that is approved for a semicircular 4-inch gutter in an area with a 1-inch per hour rainfall rate, and a 4-percent slope? 1,440 sq. ft. 2,040 sq. ft. 2,880 sq. ft. 4,080 sq. ft. 3. If a test requires a pressure of over 100 psig, the testing gauge must have increments of no more than __________ psi. 0.5 psi 1.0 psi 2.0 psi 5 psi 4. One trap may accommodate a combination plumbing fixtures, as long as one compartment of the fixture is 6 inches (152 mm) deeper or less than the other compartment, and that the fixture's waste outlets are ___________ apart or less. 6 inches (152 mm) 12 inches (305 mm) 18 inches (457 mm) 30 inches (610 mm) 5. Before connecting to the outside vent terminal, a vent or branch vent for multiple island fixture vents must extend at least ___________ above the highest island fixture that it is venting. 2 inches 3 inches 4 inches 5 inches 6. For underground nonmetallic gas piping, the required yellow insulated copper tracer wire must be at least __________ AWG. 12 AWG 14 AWG 16 AWG 18 AWG 7. Before corrosive liquids that could harm drainage piping can be discharged into a sanitary drainage system, they must be __________. diluted by water or passed through a neutralizing medium filtered through a diatomaceous earth filtration system permitted for discharge by state and federal tested to determine that it is not corrosive to the piping system 8. Continuous and semi-continuous flow into a drainage system shall have their drainage fixture unit values computed based on a flow being equivalent to how many fixture units? One Two Three Four 9. Shower liners must turn up 2 inches (51 mm) or more on all sides and must not be perforated or nailed above the finished threshold for at least __________. 1 inch (25 mm) 2 inches (51 mm) 3 inches (76 mm) 4 inches (102 mm) 10. Where there is more than one change of horizontal direction exceeding 45 degrees a developed length of piping from a cleanout, the first cleanout may serve for all changes of direction within that __________ feet. 20 40 60 80 11. A drinking water fountain with a single orifice of up to 7/16-inch in diameter or several orifices whose total area is up to 0.150 square inch (the equivalent area of a circle with a diameter of 7/16-inch) must have an air gap with a distance of at least __________. 1 inch 2 inch 3 inch 4 inch 12. Plastic fittings, pipe and tubing must comply with __________ to be used for fuel gas applications. ANSI LC-4 ANSI/UL 651 ASME B36.10 ASTM D2513 13. If a hot water storage tank or storage tank-type water heater is installed where leakage from the tank will cause damage, it must be installed in a galvanized steel pan at least __________ deep. 0.75 inch (19 mm) 1 inch (25 mm) 1.5 inches (38 mm) 2.0 inches (51 mm) 14. When there is space between the outside of a pipe and either an opening in a building envelope ceiling assembly, floor or wall penetrated by the pipe or the inside of a pipe sleeve must be: filled or tightly caulked with oakum insulated with a material which will not corrode the pipe lubricated with an approved lubricant to allow for movement sealed in an approved manner or closed with a gasketing system 15. Openings subjected to normal atmospheric pressure have installed on them a type of backflow preventer that works by admitting atmospheric pressure on the discharge side of the device through ports, which is called a __________. Air Admittance Valve Backwater Valve Trap Seal Vacuum Breaker 16. If there are different requirements in different sections of the code, the part that applies will be the one with the __________ requirements. general least restrictive most restrictive specific 17. Any additions to an existing fuel gas installation must conform to requirements for __________ installations. existing modified new relocated 18. A shower must have a waste outlet no less than 1-1/2 inches (38 mm) in diameter, and it must have a removable strainer with openings of not less than 0.25 inch (6.4 mm) in the smallest measurement, and the whole strainer have a diameter of at least __________. 1 1/4 inches (32 mm) 1 1/2 inches (38 mm) 2 inches (51 mm) 3 inches (76 mm) 19. If the waste line is __________ , a domestic dishwashing machine waste line is allowed to discharge into a wye-branch fitting on the tailpiece of a kitchen sink. a minimum 1-inch diameter connected to a deck-mounted air break fastened to the underside of the counter trapped 20. If a hot water storage tank or storage tank-type water heater is installed where leakage from the tank will cause damage, it must be installed in a galvanized steel pan made of metal at least __________ gauge (0.0236 inch or 0.6010 mm) thickness, or other such pans that are approved for this purpose. 10 gauge 15 gauge 24 gauge 32 gauge