2024 Plumbing Exam

Carefully read each question and then circle the letter of the best answer.

  1. A short sweep may be used to direct waste from vertical to horizontal on if it is ___ inches in diameter or greater.
    1. 2
    2. 3
    3. 4
    4. 6
  2. A relief valve shall be installed within the top ____ inches of a water heater tank
    1. 3
    2. 4
    3. 5
    4. 6
  3. Vacuum breakers for hose connections in health care or laboratory areas shall not be less than ____ feet above the floor
    1. 2
    2. 3
    3. 5
    4. 6
  4. For water distribution pipe, a standard for Galvanized steel pipe is_______>
    1. ASTM B43
    2. ASTM B 75
    3. ASTM A 53
    4. ASTM F 876
  5. The critical level of a vacuum breaker shall be set a minimum of __ inches above the flood level rim of the device
    1. 2
    2. 4
    3. 6
    4. 8
  6. An indirect waste pipe discharges into a drainage system through an air gap or____.
    1. aspirator
    2. conductor
    3. interceptor
    4. air break
  7. An individual water supply_____.
    1. is not an approved public water supply
    2. originates from a public water supplier
    3. must only serve one family
    4. is an approved public water supply
  8. Where chemicals are introduced into an irrigation system, potable water shall be protected by a _____.
    1. atmospheric type vacuum breaker
    2. reduced pressure principle backflow preventer
    3. pressure type vacuum breaker
    4. barometric loop
  9. A maximum of ____ fixtures connected to a horizontal branch drain shall be permitted to be circuit vented
    1. 4
    2. 6
    3. 8
    4. 10
  10.  A building trap
    1. Prohibited
    2. May be necessitated
    3. Must be only installed outside the building
    4. Must be only installed inside the building
  11. A water heater relief valve may not________
    1. discharge on a floor
    2. discharge directly into the drainage system
    3. have an air gap in the discharge piping
    4. have a trap in the discharge piping
  12.  To prevent frost closure, any increase in the size of a vent, to be run through a roof  shall be made at least ____ feet below the roof.
    1. .5
    2. 1
    3. 5
    4. 2
  13. Which of the following chemicals may be introduced into a potable water system.
    1. Those that produce taste
    2. Those that produce odors
    3. Those that produce discoloration
    4. none of the above
  14. A factory requiring 5 drinking fountains may substitute _____ with bottled water dispensers.
    1. 1
    2. 2
    3. 3
    4. 4
  15. one gallon of propane gas contains approximately _____ btus’ of energy
    1. 91,500
    2. 100,000
    3. 105,000
    4. 000
  16. Aluminum alloy gas pipe shall not be used in_____
    1. exterior locations
    2. when in contact with insulation
    3. underground locations
    4. all the above
  17. Gas shutoff valve operating a pressures above 0.5 psi shall comply with ____ if not labeled 2G or 5G.
    1. ASME Z 21.13
    2. ANSI A 84.65
    3. ASME T 45.07
    4. ASME B 16.33
  18. ______ insurance protects employers from liability for injuries to employees on the job.
    1. General liability
    2. Worker’s compensation
    3. Property
    4. Comprehensive
  19.  A company has annual sales of $850,000 with $230,000 overhead.  What is the percent overhead?
    1. 27%
    2. 32%
    3. 37%
    4. 18%
  20. If the yearly fuel cost to operate a water heater with an overall efficiency of 60% is $500 what would the savings be using an 80% efficient water heater?
    1. $125
    2. $100
    3. $80
    4. $75
  1.         Table 706.3 footnote a
  2.         504.4.1
  3.         608.3.1
  4.         Table 605.4
  5.         608.15.4
  6.         202 def indirect waste pipe
  7.         202 def  individual water supply
  8.         608.16.5
  9.         914.1
  10.         1002.6
  11.         504.6.1
  12.         903.2
  13.         608.5
  14.         410.4
  15.          
  16.         403.4.4
  17.         409.1
  18.  
  19.         230000/850000=27
  20.         (60/80) x 500 = 375, 500-375=125
 

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