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Plumbing Code Basics

Instructions:

Answer 50 questions in 15 minutes.
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Match each statement with the correct term.
Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.

1. Water may not be discharged onto the drainage system if temperature exceeds _____ degrees F.
140 degrees
2 lbs.
3/4 inches
150 feet

2. When installing new gas branches ______________ installed.
test the appliances
5
10
140 degrees

3. ABS plastic pipes - schedule 40 or 80 May be used in which potable water installation?
No.
Water Service Piping
2'
25'

4. What is the Drainage Fixture Unit value for a 3.5 gallon per flush flushometer water closet serving 3 or more dwelling units?
4.0
160
10 feet
3/4 inch

5. What's the maximum dfu's permitted on a 6' sewer at 1/4' per foot?
20
3 inch / 3 inch
#13
840

6. The vertical distance from the fixture outlet to the trap weir shall not exceed ____.

7. What is the minimum size floor drain required where sterilizers are located?
4 inches
3 inches
3/4'
45 - 40

8. What shall be the weight of a lead shower pan with inside dimensions 3'x4' with a 6' turn-up on all sides?
11
60 lbs
80lbs
16

9. Flexible plastic tubing shall be supported horizontal every____ inches.
Carpet
32 inches
'Type B' gas vents
60 lbs

10. Minimum gage of the tracer wire installed adjacent to underground gas piping is _____ AWG?
1'
14 AWG
32'
30'

11. Is not code for a gas fired appliance with input of 240 - 000 BTU/H.

12. Traps shall be provided at fixtures & equipment connections where the developed length of indirect waste piping exceeds ____ feet.

13. Where sump pumps discharge at grade on unpaved surfaces - splash blocks at least ____ long shall be used.
3/4'
Galvanized pipe
air gap
24 inches

14. Vitrified clay pipe installed underground within buildings shall have ____' minimum earth cover.

15. What is the minimum size floor drain required where sterilizers are located?
10'
3 inches
10'
60 lbs

16. What is the maximum length you can run a 1 1/2 inch vent off a 75 gallon per minute sump pump?

17. Well pumps located in a basement shall have the pump and suction pipes at least ____ inches above the floor.

18. Venting systems shall be designed and installed so that at no time shall trap seals be subjected to a pneumatic pressure differential of more than ____ inch of water pressure.
1
32 inches
12'
60 lbs

19. On a threaded piece of 1 1/4 inch black steel gas pipe - How many threads should be cut on the pipe?
11
240
30'
2 feet per second

20. What size gas pipe is required for a 0.5 psi. gas pressure and a pressure drop of 0.5 inch water column 50 feet in length - serving 150 - 000 btu's?
3/4 inch
4'
4'
3 - 9

21. Water may not be discharged onto the drainage system if temperature exceeds _____ degrees F.
condensate
2'
3 inch / 3 inch
140 degrees

22. Plastic pipe - tubing and fittings used to supply fuel gas shall be used ____ and ____ only.
#13
Outdoor - Underground.
1 1/2 '
3 feet above and 10 feet horizontally

23. The water supply to a carbonated beverage dispenser shall be protected against back flow by means of a ASSE #____.
1022
10'
2-1/4 inch
2'

24. Sterilzer in hospital surgical room has water waste connection must be disposed through an indirect connection to the drainage system by means of an ____.
pitcher - chain bucket
air gap
Neutralizing Device
300'

25. Making capillary joints by soldering of copper and copper alloy tube and fittings shall comply with A). ASTM B828-92 B). NFPA 99C C). ANSI 1018 or D).ASSE 5010?
7/8'
Manometer
A). ASTM B828-92
D2729

26. What is the max dfu's permitted to be discharged into a 4' soil stack on a 3 story building?
240
6'
1 - 060
Z 124.4

27. A septic tank's inside measurements are 8 feet - 6 inches long; 4 feet - 2 inches wide; 4 feet - 8 inches deep; with an 8 inch air space. The septic tank would have a liquid capacity of ____ gallons.
9 1/2'-- 10 1/2'
1 - 060
3 fps
12'

28. Appliances shall not be installed on ____ unless the appliances are list for such installation.
30'x 2
3
Carpet
120 degrees to 140 degrees

29. The bottom of the inlet section for a sand interceptor shall be rated for flow rates up to ____ gpm.
140 degrees
20
840
.2%

30. Underground gas piping not in conduit shall have a minimum cover of ____ inches.

31. In a hospital the minimum diameter for recess room floor drain waste trap is ____'

32. Materials fr pvc sewer pipe & fittings installed for foundation and sub-soil drainage shall conform to ASTM ____.
8
9 1/2'-- 10 1/2'
'Type B' gas vents
D2729

33. Vitrified clay pipe - (extra strength) - for use in sanitary waste & drain systems shall not be installed ____.
above ground - within building.
6 inches
1 1/2; 12
12'

34. A _____________ offers maximum resistance to flow of water while 45 degree elbow offers the least?
4'
C). Oxygen
above ground - within building.
globe valve

35. When backfilling a trench - backfill shall be placed in not more than ____ layers.
1/2 hour; 500
Grease Interceptors
120 degrees to 140 degrees
6 inches

36. When testing the drainage and vent system they shall be submitted to a test of ____ feet head of water for at least ____ minutes.
10'
10 - 15
air gap
pitcher - chain bucket

37. What is the minimum size vent piping permitted to be installed underground?
3
16
1 1/2 inch
20

38. A 3' horizontal drain at a 1/4' per foot grade would have a discharge velocity of ____.
8'
150 feet
3 fps
4'

39. Gas piping shall be sloped not less than 1/4 inch in ____ feet
20
No.
3 inches
15

40. A chimney passing through a flat roof must have how much clearance above and horizontally from the chimney?
3 feet above and 10 feet horizontally
3 inch
5'
1 1/2 inch

41. In a night club which holds 150 people - how many lavatories are needed in the woman's restroom?
3
4'
2'; 1 1/2'
4.0

42. The test medium of a gas system shall be____.
12'
Air - Nitrogen - carbon dioxide - or an inert gas
3/4'
1 1/4'

43. Vacuum breakers for bed pan washers shall be not less than ____ above the floor.
18 - 48
5 feet
20
24 inches

44. Appliances shall not be installed on ____ unless the appliances are list for such installation.
13
4.0
Carpet
1/2 hour; 500

45. Water closet bowls intended for children's use ages 5 and younger shall be approximately ____ high.
1 1/2 times working pressure
18 - 48
12'
Underground
3
10'
30'
120 degrees to 140 degrees
Black Water
3'
2-1/4 inch
140 degrees
Grease Interceptors
41'
4'
6'
115 gallons
26 degrees
1 1/2 '
12
#13
1 1/2; 12
3/4 inch
30'
10'
160
10 pipe diameters
12'
119.47'
75'
10'
C). Oxygen
above ground - within building.
10'
condensate
7/8'
Burner
4'
vacuum
3 - 9
1 - 060
1 1/2; 3
20
type B or L
12'
12'
as close to the appliance a practical
2'
10 - 15
12'
32'
119.47'
18 - 48
condensate
25'
4'
Carpet
30'
80 psi
5 inch
5
2'
12'
7
2'; 1 1/2'
10 feet
24 inches
2'
32'
'Type B' gas vents
15
30'
140 degrees
pitcher - chain bucket
1 1/2 hours
5'
1 1/2 hours
Outdoor - Underground.
3/4'
1 1/4'
as close to the appliance a practical
10 feet
3/4 inches
5 inch
1/4'
840
5
60'
90 degrees to 105 degrees
120 degrees to 140 degrees
4'
3/4 inches
3
1 1/2 times working pressure
Neutralizing Device
5 feet
80 psi
3 feet above and 10 feet horizontally
D2729
5'
24'
12'
5'
Z 124.4
840
10 1/2 inches to 13 1/2 inches
24
60'
140 degrees
20
.2%
150 psi
3/4'
Within the building
100
2 lbs.
240
type B or L
5 feet
24 gauge.
4'
26 degrees
3 inch
8 inch
Air - Nitrogen - carbon dioxide - or an inert gas
10 - 15
Neutralizing Device
2 1/2'
pitcher - chain bucket
13
air gap
80lbs
12'
6
2000
3
1 - 762 gallons
10 1/2 inches to 13 1/2 inches
24
40
30'x 2
6'
41'
3 feet above and 10 feet horizontally
Water Service Piping
Manometer
10 feet
3 fps
2 feet
189.3 liters
135'
10 feet
2 feet per second
18
45 - 40
Galvanized pipe
2'; 1 1/2'
11
2000
1 1/4'
90 degrees to 105 degrees
1 1/2 inch
C). Oxygen
2'
adequate capacity
6 inches
2 lbs.
12'
30'x 2
2 feet per second
18'
24'
3 - 9
16
9 1/2'-- 10 1/2'
permanently identified by labels
3 inch
3'
2'
6'
18'
14 AWG
13
3/4 inch
135'
15
1'
18
5'
3/4'
3'
1'
2 inch
test the appliances
75'
permanently identified by labels
test the appliances
20
27 inches
1 1/2; 12
840
8'
2'
11
40
4.0
8'
10'
24 inches
No.
10 pipe diameters
1
115 gallons
15 - 18
840
6 inches
A). ASTM B828-92
Outdoor - Underground.
6
1/2 hour; 500
Grease Interceptors
4 - 513 pounds
4'
10 feet
18'
1
150 psi
2 inch
3
150 feet
24'
3 fps
Manometer
4 inches
80lbs
3 - 525
3 feet outside a building wall
3 inches
12'
32 inches
#13
9 1/2'-- 10 1/2'
10
3 inch / 3 inch
8 inch
4'
2-1/4 inch
7
6'
5
14 AWG
3/4'
10 foot
26 degrees
150 feet
Within the building
300'
1/4'
12'
air gap
7/8'
1 - 762 gallons
4.0
Carpet
Water Service Piping
1 1/2 '
20
15 - 18
160
A). ASTM B828-92
5'
5
60 lbs
3
2'
10 foot
12'
Galvanized pipe
25
2'
3 inch / 3 inch
10
4.0
3
1 1/4'
above ground - within building.
125
1 1/4'
D2729
24'
25
10'
26 degrees
Within the building
Within the building
12'
1 - 060
1 1/2; 3
8
30'
140 degrees
4 inches
9 1/2'-- 10 1/2'
globe valve
3/4 inches
2 1/2'
50 psi
32 inches
draft hood
10'
1022
240
25'
24'
8
Z 124.4
24'
100
1/2 hour; 500
Burner
Black Water
3 inches
45 - 40
150 psi
0.2
.2%
24 gauge.
4.0
1022
vacuum
27 inches
12'
3/4 inches
4 - 513 pounds
2 feet
16
30'
4'
50 psi
globe valve
5'
'Type B' gas vents
18'
0.2
1 1/2 inch
150 psi
3 feet outside a building wall
189.3 liters
3 - 525
No.
60 lbs
10 feet
125
adequate capacity
10'
Air - Nitrogen - carbon dioxide - or an inert gas
300'
draft hood
3'
12
Underground

46. Underground gas piping systems shall be installed with a minimum of ____' of cover.
12
120 degrees to 140 degrees
air gap
3'

47. Rated flow velocities for grinder pump ejectors shall be not less than ____.
3
2 feet per second
'Type B' gas vents
60'

48. Sump pits shall be a minimum of ____ inches in diameter and ____ inches in depth.
18 - 48
1/4'
30'x 2
15 - 18

49. When backfilling a trench - backfill shall be placed in not more than ____ layers.
6 inches
15
300'
3'

50. The vertical distance from the fixture outlet to the trap weir shall not exceed ____'.