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Plumber's Licensing Exam: Practice Test 2
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Plumber's Licensing Exam: Practice Test 2
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25 Questions

1. After installation, hot and cold water supply piping must be subjected to a pressure test of not less than its working pressure.
2. Copper tubing with a diameter of 11/2 in. hung horizontally must be supported at least every
3. What is the minimum flow rate for a residential sink?
4. A building subdrain can receive waste from
5. A pitch of 1/4-in. per foot must be maintained on a drain pipe that is being hung under floor joists. On the upstream end of the pipe, it measures 141/2-in. from the underside of the floor above to the centerline of the pipe. What will the measurement be from the underside of the floor to the centerline of the pipe 20 ft. downstream?
6. If an indirect waste requires a vent, the vent must vent independently through the roof.
7. A closet flange must be attached to
8. The vertical rise of a vent shall be _____________ above the flood level rim of the highest trap or trapped fixture being vented.
9. In water closet compartments containing a wall-hung water closet, the minimum depth of the compartment should be 56 inches.
10. Water from bathtubs, showers, lavatories, clothes washers, and laundry tubs is called ________________ water.
11. _______________ cannot be put into a building drainage system.
12. Concrete is considered corrosive to pipes.
13. Which of the following can be placed in an elevator shaft?
14. In retail stores, service sinks are not required if the occupant load does not exceed how many occupants?
15. Fixtures used for therapy must be able to withstand water temperatures as high as 120°F.
16. An installed fixture is required to be connected to a water and drainage system if
17. How high must a vent rise above the flood-level rim of a trapped fixture?
18. The use of gray water as an alternative water source is becoming highly desirable due to the fact that
19. If the floor drain in a walk-in freezer ____________________________, it can drain into the sanitary drainage system through an air break.
20. A 3-in. diameter pipe carrying potable water must be identified with a color field that is __________ long.
21. What should you see when you open the lid of a flushometer tank?
22. The effluent in a sump must not rise within how many inches of the invert of the gravity drain inlet into the pump?
23. The circulation piping on a whirlpool bath must
24. A low heel inlet 90-degree bend can be used directly below a water closet connection.
25. A vent should be connected at least what distance from the trap weir?

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