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Plumber's Licensing Exam: Traps, Interceptors, and Separators
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Plumber's Licensing Exam: Traps, Interceptors, and Separators
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25 Questions

1. A trap can be no larger than
2. The purpose of a trap is
3. A P-trap is the only trap design allowed.
4. Oil separators are required at
5. A grease interceptor in an area using the IPC, with a capacity of 50 pounds, can handle a flow-through capacity of
6. A integral trap is trap that is manufactured as part of a fixture and is not removable (IPC 1002.1).
7. The minimum depth of a trap seal is ______ inch(es).
8. The vertical distance from a fixture outlet to the trap weir shall be no more than
9. The soil pipe draining a water closet must have a trap sized a minimum of 3 inches in diameter.
10. Food waste grinders can connect to a grease interceptor if
11. Fixtures that must flow to a grease interceptor include
12. A trap seal primer must be installed
13. An accepted trap design for a sink used in the making of plaster casts and denture grindings would be a(n)
14. Slips joints are only allowed on the trap inlet and within the trap seal.
15. Drum traps are allowed for
16. The simplest way to size a grease interceptor is to
17. Crown venting means a vent connected within ________________ of the trap weir.
18. Individual dwellings require grease interceptors with a capacity of less than 10 pounds.
19. A building trap must have
20. Grease interceptors are installed only if a business owner wants to protect his or her drainage system.
21. Traps require leveling when installed.
22. A single trap can serve ______ compartments on a combination fixture.
23. The main difference between an interceptor and a separator is that the interceptor retains waste while the separator sends waste out to a storage tank.
24. A building trap should be installed in all public buildings.
25. What number of drainage fixture units can a grease interceptor in an area using the UPC, with a flow capacity of 50 GPM handle?

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