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Plumbing Practice Exam Questions 2
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Plumbing Practice Exam Questions 2
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25 Questions

1. Hot water piping can be bundled together with cold water piping.
2. Define closet ring.
3. In a vacuum drainage system, the vacuum pump maintains an operating range of _______ of mercury vacuum.
4. Where a vent terminates on a roof that is to be used for any purpose other than weather protection, the vent shall terminate not less than ___________ above the roof.
5. On a water heater, a full-opening valve is required on
6. The juncture of each vent pipe with the roofline must be made water-tight by
7. The open area of a strainer must be _____________________ the area of the tailpiece.
8. In an area where the pressure of the street water main fluctuates, a building’s water distribution system must be designed for the maximum pressure available.
9. Where and how must the exhaust from vacuum pumps in a medical vacuum system terminate?
10. A crown vent is a vent within _________________ of the trap weir.
11. To connect plastic pipe to another material, you must use
12. How high must a vent rise above the flood-level rim of a trapped fixture?
13. An oil separator would be required for which of these businesses?
14. When is it safe to directly connect a commercial dishwashing machine to the sanitary drainage system?
15. According to the IPC, a residential automatic clothes washer, one kitchen sink, and one bathroom group (consisting of a 1.6 GPF water closet, single lavatory, and bathtub/shower) have a drainage load of ____ DFUs.
16. What height must the discharge line from the relief valve on the water heater be from the floor or waste receptor?
17. A water closet, urinal, lavatory, or bidet shall not be set closer than how many inches from its center to any side wall, partition, vanity, or other obstruction?
18. The circulation piping on a whirlpool bath must
19. The effluent in a sump must not rise within how many inches of the invert of the gravity drain inlet into the pump?
20. If you drill a hole with a radius of 21/4 in., what is the area of that hole?
21. Storm drain system cleanouts are required
22. A 3-in. diameter pipe carrying potable water must be identified with a color field that is __________ long.
23. The abbreviation ______ designates the type of threads cut in pipes that forms a tapered thread commonly used in plumbing.
24. Which gas must be flowing through a medical gas system when brazing joints?
25. For a test pressure of 50 psi, a gauge with increments of _____ psi must be used.

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