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Plumber's Licensing Exam: Vents
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Plumber's Licensing Exam: Vents
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25 Questions

1. A circuit vent must be connected to the waste line between the fixture furthest upstream and the next fixture downstream.
2. Sheet copper for vent pipe flashing must weigh at least
3. Self-siphonage is a problem with
4. A trap weir that has a 3-in. diameter can be _________ feet from a vent.
5. It is not permitted to drain an attic condensate pipe into a vent pipe.
6. Horizontal vent pipes must be sloped
7. A trap weir that has a 11/4-in. diameter can be _________ feet from a vent.
8. A urinal can be connected to a combination drain and vent pipe.
9. If a kitchen sink must be drained through a combination drain and vent system, what will be the pipe size of the vertical portion of the drain?
10. A trap weir that has a 2-in. diameter can be _________ feet from a vent.
11. How far can the weir of a water closet trap be from a vent?
12. What is the smallest size vent permitted for a 4-in. stack?
13. S-traps
14. The primary purpose of vent piping is
15. How high is the highest portion of an island fixture vent?
16. A crown vent is
17. Under the IPC, an air admittance valve can be installed below the flood-level rim of a sink.
18. The materials used for vents must be selected according to the same chart as that for drainage piping.
19. In a multistory building with a vent stack, a relief vent must be installed every __________ branch intervals.
20. A waste stack must have a stack vent.
21. How many DFUs can be drained through a 3-in. combination drain and vent pipe that connects to a stack?
22. A trap weir that has a 11/2-in. diameter can be _________ feet from a vent.
23. Any type of fixture can be installed using a combination drain and vent.
24. A combination drain and vent system is used
25. The greatest pressure differential allowed against a trap is

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