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Plumber's Licensing Exam Practice Test 1
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Note: Your licensing exam will be based on the plumbing code used in your area.

Plumber's Licensing Exam Practice Test 1
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25 Questions

1. _______ inches of clearance are required between the centerline of a water closet and any wall that may be on either side of the water closet.
2. Water with a temperature higher than 110°F is called
3. A showerhead can flow a maximum of _______ GPM.
4. An overflow built into a lavatory
5. The minimum diameter of water service pipe must be 1 in.
6. A 2-inch short sweep is permitted for a horizontal-to-horizontal change of direction in a drainage pipe
7. The minimum size water supply pipe to a wall hydrant is
8. A 2-in. horizontal fixture branch has a DFU capacity of
9. How many DFUs can a 2-in. horizontal fixture branch carry?
10. The primary purpose of a vent is to
11. A barometric loop is
12. A bell trap is approved for floor drains.
13. How many DFUs can a 2-in. stack of three branch intervals or less carry?
14. Bituminous fiber pipe is permissible for use
15. The constant used to find the length of a 45° offset is
16. In a public bathroom, urinals must be spaced _____ inches apart.
17. How many gallons of water can a 4-in. diameter pipe that is 100 ft. long contain?
18. A building trap is required
19. Which of the following are allowed positions for using a drainage tee to carry wastewater?
20. CPVC is approved for aboveground drainage and vent piping.
21. A double tee-wye can be used to drain back-to-back water closets if
22. The term toxic means
23. A water storage tank is 38 in. high and 23 in. in diameter. How many gallons of water will it hold when it is 3/4 full?
24. A crown vent is allowed
25. Slip-joint connections

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