Plumbing Code Basics

Instructions:

• Answer 50 questions in 15 minutes.
• If you are not ready to take this test, you can study here.
• 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. What is the maximum spacing between fixtures on a continuous waste?

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2. A ________ exists when pressure is less than pressure exerted by the static atmosphere?
27 inches
vacuum
75'
41'


3. Gas input ratings of appliances shall be used for elevations up to ____'.
2 lbs.
Grease Interceptors
140 degrees
2000


4. Can be used for appliances with draft hoods.

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5. Type B gas vent with 240 - 000 btu must extend ____' above roof.

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6. What is the minimum discharge pipe size for a grinder pump which discharges 45gpm?

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7. An approved pressure reducing valve shall be provided where it is required to limit the water supply pressure but shall be no more than ____ psi.
3 feet outside a building wall
7/8'
3/4 inch
80 psi


8. In a confined space - the duct with combustion air to fuel burning appliance must be ____' from the floor.

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9. What size vent stack is needed for a 160' tall building with 6 branch intervals each having 23 drainage fixture units per branch?
3 inch
1/4'
32'
27 inches


10. Test duration shall not be less than ____ hour for each ____ ' of pipe volume or fraction thereof.
6
1/2 hour; 500
Outdoor - Underground.
3


11. Metered bends can only be used in gas piping system if the pressure is a maximum of ____ psi.
Galvanized pipe
2'
50 psi
pitcher - chain bucket


12. What shall be the weight of a lead shower pan with inside dimensions 3'x4' with a 6' turn-up on all sides?
globe valve
27 inches
80lbs
7/8'


13. A standpipe shall extend a minimum ____' and a maximum ____' above the trap.
4 - 513 pounds
10'
18 - 48
#13


14. Plastic water supply shall use a wall sleeve not less than ____ long.

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


16. Metallic drip pans shall be a minimum ____ gauge.
75'
3
24 gauge.
8


17. Pressure tanks & vessels shall be durable material & constructed to withstand ____ psig.
50 psi
32'
125
840


18. Waste drainage from condensers or steam traps shall be cooled below ____ before being discharged indirectly into the sanitary drainage system.
18 - 48
30'
10 pipe diameters
140 degrees


19. What is the max dfu's permitted to be discharged into a 4' soil stack on a 3 story building?
2 feet
27 inches
189.3 liters
240


20. What is the maximum relief valve setting for CPVC (ASTM F441) hot water distribution?
air gap
3
globe valve
150 psi


21. When testing the drainage and vent system they shall be submitted to a test of ____ feet head of water for at least ____ minutes.
1 - 762 gallons
10 - 15
5 feet
12'


22. The device for final conveyance of the gas air to the combustion zone is called a ____.
45 - 40
4 inches
8
Burner


23. What is the approximate length of threaded portion and approximate number of threads to be cut for a 3' pipe?
2-1/4 inch
2000
1 1/2; 12
25'


24. 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.
No.
18
1 - 060
1 1/2 times working pressure


25. Is used to measure gas pressure.
Manometer
10 1/2 inches to 13 1/2 inches
2 feet per second
draft hood


26. Vent connector located and serving appliances in an attic shall be ________ vent.
type B or L
32'
3/4 inch
40


27. Can a laundry tub be discharged to a trap serving a kitchen sink?
No.
2'
10'
1'


28. Rectangular shower compartments may have a rough-in dimension width of what?
13
Outdoor - Underground.
27 inches
type B or L


29. A water supply tank with a water supply line of 75gpm shall have an overflow pipe ____' in diameter.

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30. Conductor is a storm pipe_____.
12'
12'
12'
Within the building


31. What size sewer is needed for 230 Drainage Fixture Units' at 1/4' per foot grade?

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32. Light & ventilation falls under basic principle #____.
Within the building
27 inches
16
8'


33. Used - untreated water that is flushed down toilets and urinals is called ____.
Black Water
12'
18
Z 124.4


34. The temperature of tempered water shall be not less than ____ and not more than____?
90 degrees to 105 degrees
Galvanized pipe
pitcher - chain bucket
1 1/4'


35. How many gallons of water would be in a tank which was 5' in diameter - 16' tall - and 3/4 full?
condensate
2'
1 - 762 gallons
12'


36. A chimney must pass through the roof at least ____'.

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37. In a single dwelling unit - up to ___ bathroom groups shall be permitted where the water closets are 1.6 gallons per flush or less.
8 inch
60 lbs
6
Outdoor - Underground.


38. What shall be the weight of a lead shower pan with inside dimensions 3'x4' with a 6' turn-up on all sides?
80lbs
10 - 15
1022
3 - 9


39. What is the maximum length for a 3' trap arm?

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40. The threaded portion of 1' gas pipe is ____ inches?

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41. Water piping for the distribution of hot or cold water within buildings shall be of materials rated for not less than_____ psig.
18'
100
2'
3/4'


42. What is the minimum size vent piping permitted to be installed underground?
50 psi
3/4'
permanently identified by labels
1 1/2 inch


43. Potable hot water shall be at a temperature of not less than ____ and not more than_____.
120 degrees to 140 degrees
2 lbs.
9 1/2'-- 10 1/2'
10 foot


44. What is the maximum length for a 3' trap arm?

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

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46. 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
18 - 48
1'
115 gallons


47. A _____________ offers maximum resistance to flow of water while 45 degree elbow offers the least?
D2729
3/4 inches
globe valve
10 pipe diameters


48. Metallic drip pans shall be a minimum ____ gage.
2 1/2'
24
1 1/2 inch
12'


49. What is the water supply fixture units value for a domestic clothes washer in an individual dwelling unit?
20
4.0
1 1/2 hours
120 degrees to 140 degrees


50. Sump pits shall be a minimum of ____ inches in diameter and ____ inches in depth.
15 - 18
3 inch
2 inch
189.3 liters