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. Water may not be discharged onto the drainage system if temperature exceeds _____ degrees F.
24'
140 degrees
2'; 1 1/2'
4.0


2. A vent stack shall be provided for drainage stacks having ____ or more branch intervals.
26 degrees
4'
5
type B or L


3. If gas equipment is not provided with a _____________ - the device must be attached to the equipments' flue collar or as near to the equipment as practical.
draft hood
24 inches
Z 124.4
90 degrees to 105 degrees


4. The temperature of tempered water shall be not less than ____ and not more than____?
Z 124.4
90 degrees to 105 degrees
12'
5 inch


5. Can be used for appliances with draft hoods.

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6. Where sump pumps discharge at grade on unpaved surfaces - splash blocks at least ____ long shall be used.
1 - 762 gallons
24 inches
1 1/4'
30'


7. Where sump pumps for a foundation drain are installed - the minimum discharge pipe from sump is ____'.

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8. 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
10 foot
300'
D2729


9. Each trailer site shall be provided with a ____ ips male or female threaded connection - extended above grade - from a ____ minimum size vented p-trap.
3
3 inch / 3 inch
0.2
80lbs


10. How many gallons of water would be in a tank which was 5' in diameter - 16' tall - and 3/4 full?
3/4 inch
12
1 - 762 gallons
25


11. 150 - 000 btu/h category 1 fan assisted appliance with vertical run of 20' and a lateral run of 20' minimum vent using diameter of allow using type B wall vent is ____'.

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12. 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'
3 - 9
3/4 inch
Outdoor - Underground.


13. 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.
1'
Outdoor - Underground.
draft hood
80 psi


14. What is the minimum condensate pipe size for a 300 ton cooling unit?

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15. How many gallons of water would be in a tank which was 5' in diameter - 16' tall - and 3/4 full?
10 foot
3 fps
1 - 762 gallons
115 gallons


16. Mechanically formed tee fittings shall have depth stops provided ____ above the dimple that acts as a depth stop.

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17. Used - untreated water that is flushed down toilets and urinals is called ____.
permanently identified by labels
7
13
Black Water


18. 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.
80 psi
Within the building
Within the building
10 feet


19. Test duration shall not be less than ____ hour for each ____ ' of pipe volume or fraction thereof.
18 - 48
1/2 hour; 500
150 feet
2'


20. Sterilzer in hospital surgical room has water waste connection must be disposed through an indirect connection to the drainage system by means of an ____.
30'x 2
3
air gap
1 1/2; 3


21. What is the minimum drain size required to receive the discharge from a 3/4 inch Temperature and Pressure Valve from an 85 gallon hot water heater?
5'
1/4'
30'
2 inch


22. Gas input ratings of appliances shall be used for elevations up to ____'.
9 1/2'-- 10 1/2'
test the appliances
2000
.2%


23. Waste oil tanks shall have a ____' minimum pump-out connection and a ____' minimum vent to atmosphere.

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24. Underground gas piping systems shall be installed with a minimum of ____' of cover.
10
12
1'
1 1/2; 12


25. Mechanically formed tee fittings shall have depth stops provided ____ above the dimple that acts as a depth stop.

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26. Potable hot water shall be at a temperature of not less than ____ and not more than_____.
120 degrees to 140 degrees
840
5'
2'; 1 1/2'


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

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28. Testing the plumbing system is principle #____.
1 1/2 times working pressure
6'
#13
No.


29. A chimney passing through a flat roof must have how much clearance above and horizontally from the chimney?
3 - 525
3 feet above and 10 feet horizontally
2'; 1 1/2'
1 1/2; 12


30. What is the maximum spacing between fixtures on a continuous waste?

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31. What shall be the weight of a lead shower pan with inside dimensions 3'x4' with a 6' turn-up on all sides?
15 - 18
80lbs
3'
4'


32. A standpipe shall extend a minimum ____' and a maximum ____' above the trap.
2000
12'
2 lbs.
18 - 48


33. 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.
27 inches
18'
10'
1


34. The test medium of a gas system shall be____.
10'
6 inches
Air - Nitrogen - carbon dioxide - or an inert gas
Black Water


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

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36. 1/2' steel pipe must be supported every ____'.

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37. What size water softener connection is required for two bathroom groups?

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38. What shall be the depth of lead required for a 3 inch cast-iron water pipe - bell and spigot?
18
2-1/4 inch
12'
13


39. A vent stack shall be provided for drainage stacks having ____ or more branch intervals.
32'
5
24 inches
5'


40. Pressure tanks & vessels shall be durable material & constructed to withstand ____ psig.
Within the building
125
Air - Nitrogen - carbon dioxide - or an inert gas
4'


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

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42. Sterilzer in hospital surgical room has water waste connection must be disposed through an indirect connection to the drainage system by means of an ____.
air gap
No.
3/4'
24'


43. Metallic drip pans shall be a minimum ____ gauge.
24 gauge.
2 feet per second
3 feet outside a building wall
140 degrees


44. A sewer runs 375' long at 3% grade - how many inches is the drop?

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45. What is the maximum length of a 2 inch trap arm?

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46. What is the maximum length of a 2 inch trap arm?

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47. In a night club which holds 150 people - how many lavatories are needed in the woman's restroom?
10
30'
2'
3


48. Minimum size building drain at 1/4' per foot for 45 drainage fixture units is _____.

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49. Potable hot water shall be at a temperature of not less than ____ and not more than_____.
Burner
6 inches
24'
120 degrees to 140 degrees


50. No ____ or ____ pumps shall be installed on any potable water supply.
pitcher - chain bucket
3 inches
300'
12'