30 Multiple choice questions

1. A pipe set in gravel running continuously along a buildings foundation is also known as ___________ .
   1. DRAIN TILE
   2. DIALECTRIC
   3. GALVANIZED
   4. BIDET
2. In the garage, water heaters in the path of a vehicle should be protected by _______ .
   1. BIDET
   2. BALLARDS
   3. UNIONS
   4. BACKWATER
3. The minimum clear width for a toilet is ______inches.
   1. 72
   2. 2
   3. 30
   4. 3
4. A ________ union installed between copper and galvanized pipe will prevent corrosion.
   1. BIDET
   2. DRAIN TILE
   3. DIALECTRIC
   4. BALLARDS
5. In the garage, water heaters should be raised above the floor ______ inches.
   1. 72
   2. 18
   3. 1
   4. 2
6. Type M copper pipe has ____ color printing on it.
   1. PVC
   2. RED
   3. 72
   4. PEX
7. Laundry stand pipes should be a minimum of ____ inches in heigh.
   1. QUARTER
   2. 18
   3. 18"
   4. 1
8. The minimum horizontal support spacing for 3/4" steel pipe is ___ feet.
   1. 4
   2. 6
   3. M
   4. 1
9. The maximum trap seal depth is ____ inches.
   1. 3
   2. 4
   3. 6
   4. 2
10. When a pressure regulator creates a "closed system" there should be a _______ installed at the water heater.
    1. DISCONNECT
    2. UNIONS
    3. DRAIN TILE
    4. EXPANSION TANK
11. The minimum air gap between the faucet outlet and the flood level rim of a bathroom sink is ___ inches.
    1. 6
    2. M
    3. 3
    4. 1
12. What type of pipe has the least amount of friction loss?
    1. RED
    2. PVC
    3. 72
    4. PEX
13. When a fixture is above the sewer elevation and below the manhole elevation is should drain through a __________ valve.
    1. BIDET
    2. BALLARDS
    3. BACKWATER
    4. QUARTER
14. Pipe corrosion from copper and galvanized pipe contacting each other is know as _______ .
    1. UNIONS
    2. DISCONNECT
    3. ELECTROLYSIS
    4. DIALECTRIC
15. In a shower the non-absorbent wall finish should extend a minimum of _______ inches above the drain.
    1. 72
    2. 2
    3. 1
    4. M
16. A "Durham" system of piping uses cast iron and _________ pipe.
    1. BALLARDS
    2. GALVANIZED
    3. BIDET
    4. RED
17. PVC & ABS horizontal drain pipe supports should be a minimum of ___ feet apart.
    1. 4
    2. 6
    3. 1
    4. M
18. Type ___ is the thinnest copper pipe.
    1. 4
    2. 1
    3. 3
    4. M
19. Electric water heaters must have a __________ within site of the tank.
    1. DIALECTRIC
    2. BIDET
    3. DISCONNECT
    4. UNIONS
20. What is the minimum number if inches a vent pipe can extend out of the roof?
    1. 3
    2. 2
    3. 4
    4. 6
21. Drains transitioning from _________ to horizontal require the most gradual bend.
    1. PEX
    2. VERTICAL
    3. UNIONS
    4. PVC
22. The minimum trap seal depth is ____ inches.
    1. 72
    2. M
    3. 3
    4. 2
23. In the bathroom a _________ would require a vacuum breaker.
    1. 4
    2. RED
    3. BIDET
    4. PEX
24. Water heaters should have ______ installed within 12 inches of the tank.
    1. PVC
    2. BIDET
    3. 4
    4. UNIONS
25. The minimum diameter for a washing machine stand pipe is _____ inches.
    1. 1
    2. 72
    3. 2
    4. 6
26. What type of pipe is most likely to fail due to defects?
    1. DRAIN TILE
    2. BALLARDS
    3. PB (polybutylene)
    4. BACKWATER
27. Flexible gas line connectors for a water heater would not be longer than ____ feet.
    1. 6
    2. 2
    3. 3
    4. M
28. Water heater temperature and pressure relief valves must be located in the upper ___ inches of the tank
    1. 6
    2. M
    3. 4
    4. 1
29. What type of pipe can't be used in indoor water distribution?
    1. 6
    2. 4
    3. PVC
    4. PEX
30. Waste drain pipes should have a minimum slope of _____ inch per foot.
    1. RED
    2. UNIONS
    3. QUARTER
    4. BIDET