Test your basic knowledge |

Plumbing Code Basics

Subjects : industries, plumbing
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 drainage fixture units permitted on a 6 inch sewer at 2% (1/4 inch) grade?






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

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3. Water may not be discharged onto the drainage system if temperature exceeds _____ degrees F.






4. A ________ exists when pressure is less than pressure exerted by the static atmosphere?






5. What is the minimum pressure used to test gas piping with a working pressure less than 125 psi?






6. Can be used for appliances with draft hoods.

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7. A minimum test length for a gas pipe 1 - 500 cu ft is ____.






8. Conductor is a storm pipe ____.






9. Where shall sediment traps be located?






10. Must be installed so that a swing check valve controls the flow of rate






11. What size sewer at 1/4 inch slope is needed for a building with 25 branch intervals each branch having 18 Drainage Fixture Units?






12. A vent stack shall be provided for drainage stacks having ____ or more branch intervals.






13. No ____ or ____ pumps shall be installed on any potable water supply.






14. Waste drainage from condensers or steam traps shall be cooled below ____ before being discharged indirectly into the sanitary drainage system.






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

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

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17. A 2 inch type L copper water branch shall be supported at _____ intervals.






18. Oil interceptors - waste oil tanks - oil pump-out connection - backwater valves - and atmospheric vent piping shall be?






19. Flexible plastic tubing shall be supported horizontal every____ inches.






20. Where does the building drain end and the building sewer begin?






21. When installing new gas branches ______________ installed.






22. Joints for potable water used in copper shall be made with a solder containing not more than____ % lead.






23. 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.






24. 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?






25. How many gallons of water would be in a pipe 3 inch diameter pipe 314 feet long?






26. What size drain pipe is needed to receive the discharge from 2 lavatories - 1 bidet - and 1 drinking fountain?

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27. The minimum distance from the garage floor to a gas appliance must be ____.

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28. Rectangular shower compartments may have a rough-in dimension width of what?






29. What shall be the weight of a lead shower pan with inside dimensions 3'x4' with a 6' turn-up on all sides?






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

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31. What is the Drainage Fixture Unit value for a 3.5 gallon per flush flushometer water closet serving 3 or more dwelling units?






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

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33. A 50 gallon water heater when filled - would hold ____ liters of water?






34. Joints for potable water used in copper shall be made with a solder containing not more than ___% lead.






35. Test duration shall not be less than ____ hour for each ____ ' of pipe volume or fraction thereof.






36. Testing the plumbing system is principle #____.






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

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38. When backfilling a trench - backfill shall be placed in not more than ____ layers.






39. 1/2' steel pipe must be supported every ____'.

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

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41. When testing the drainage and vent system they shall be submitted to a test of ____ feet head of water for at least ____ minutes.






42. Lead caulked joints for cast-iron hub & spigot soil pipe shall be firmly packed with oakum or hemp & filled with molten lead not less than____'.

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43. Metered bends can only be used in gas piping system if the pressure is a maximum of ____ psi.






44. What is the water supply fixture units value for a domestic clothes washer in an individual dwelling unit?






45. Potable water supply systems using wells - shall have well casing - curbs and pitless adapters terminating not less than ___ inches above the finished ground surface.






46. Grease interceptors shall have a grease retention capacity of not less than ____ pounds for each gpm of flow.






47. For Rodding - clean clearances for clean outs - 3' or larger is ____.

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48. What size sewer is needed for 230 dfu's at 1/4' per foot?

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49. Water distribution piping shall be pressure rated for not less than ____ psig.






50. Vitrified clay pipe - (extra strength) - for use in sanitary waste & drain systems shall not be installed ____.