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Plumber's Licensing Exam: General Regulations
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Plumber's Licensing Exam: General Regulations
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25 Questions

1. Plumbing systems cannot be located in
2. If a building drain is made of cast iron it may pass through the building foundation without a sleeve.
3. Piping in a trench must always be continuously supported on unexcavated earth.
4. Water supply systems made of any approved material can be tested with compressed air.
5. When testing a water supply system with air, the minimum test pressure must be 50 psi.
6. Which individual is responsible for testing a new plumbing system?
7. Which item cannot be put into a building drainage system?
8. Before it is sent down the building drain, Industrial waste must be made innocuous (harmless) to the sewer system or the sewage treatment plant (IPC 302.2).
9. A large rock can be included in backfill above a pipe in a trench
10. A drainage system is pressurized to 5 psi when conducting a smoke test.
11. Sewers must be installed to a minimum depth of __________________________________.
12. A trench for a soil pipe can be dug next to a footing to a depth of no more than 12 in. below the base of the footing.
13. Drilling and tapping hub and spigot–type cast-iron soil pipe is approved, as long as the drilling and tapping is completely in the hub area.
14. In testing a drainage system, the uppermost 10 ft. of piping needs to be subjected to 10 feet of head pressure.
15. Outdoor water supplies must be buried a minimum of 12 in. below grade.
16. Horizontal copper tubing that is 11/4 in. or less must be supported at least every ________.
17. New drainage systems constructed of cast-iron pipe can be tested with air pressure.
18. Pipes and fittings with the manufacturer’s identification on them are the only ones that can be used.
19. Concrete is not considered corrosive to pipes.
20. For a test pressure of 50 psig, a gauge with increments of 2 psig may be used.
21. Townhouses can share water and sewer services.
22. Storm drainage systems are tested with a different procedure than sanitary drainage systems.
23. As long as a door can be opened at least 65 degrees, it is allowable for the door to come into contact with a plumbing fixture.
24. The smallest openings in strainer plates on drain inlets must be no larger than __________.
25. How many toilet facilities are required for 25 construction workers when they are serviced weekly?

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