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Plumbing > Session 11. > Flashcards

Session 11. Flashcards

0
Q
  1. Water meters that have been approved in N.Y.C. can be set by:
    A. A licensed engineer.
    B. A licensed master plumber.
    C. A master fire suspension piping contractor.
    D. The owner of the building.
A

B. A licensed master plumber.

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1
Q
  1. On which of the following types of service is there no goos neck required:
    A. Two inch in diameter or less using brass pipe.
    B. Two inch in diameter or less using copper tubing.
    C, Ductile iron connections.
    D. One inch copper tubing water service.
A

C, Ductile iron connections.

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2
Q 
3. In which of the following ways shall connections of existing lead service pipes to copper tubing or brass service pipes be made:
A. Wiped joint.
B. Using a compression coupling.
C. Brazed joint.
D. Soldered.
A

B. Using a compression coupling.

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3
Q
  1. Water supply openings and outlets shall be protected by atmospheric-type or pressure-type vacuum breakers. The critical level of the vacuum breaker shall be set a minimum of:
    A. A minimum of 2” above the waste outlet of the fixture.
    B. A minimum of 6” above the flood level of the fixture.
    C. A minimum of 2” above the point where submerged outlet enters the fixture.
    D. At any location in the supply line supplying the submerged outlet enters the fixture.
A

B. A minimum of 6” above the flood level of the fixture.

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4
Q 
5. Which of the following factors will most likely cause a vacuum breaker to fail to operate:
A. Type of water used.
B. The humidity.
C. Closed air ports.
D. Velocity of flow.
A

C. Closed air ports.

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5
Q 
6. Vacuum breakers are used for which of the following purposes:
A. Shut off valve.
B. To stop leaks.
C. To prevent siphonage. 
D. To flush fixtures.
A

C. To prevent siphonage.

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6
Q 
7. What test medium is not used to clean (purging) a clogged natural gas line:
A. Air.
B. Oxygen.
C. Carbon dioxide.
D. Nitrogen.
A

B. Oxygen.

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7
Q 
8. In a properly installed hot water supply system, which is least likely to cause a breakage:
A. Excessive pressure.
B. Setting of the building.
C. Expansion joint.
D. Water hammer.
A

D. Water hammer.

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8
Q
  1. On a roof tank which of the following determines the size of the overflow:
    A. 2 commercial sizes larger than the water supply to the roof tank.
    B. 1/2 commercial sizes larger than the water supply to the roof tank.
    C. 1 commercial sizes larger than the water supply to the roof tank.
    D. PC 606.5.4, Tables 606.5.4(1) & 606.5.4(2).
A

D. PC 606.5.4, Tables 606.5.4(1) & 606.5.4(2).

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9
Q 
10. Siphonic action is caused by:
A. Suction.
B. Balance.
C. Venting.
D. Atmospheric pressure.
A

D. Atmospheric pressure.

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10
Q
  1. List 5 locations on the drainage system where clean-outs are required:
    1, 2, 3, 4, 5.
A
  1. All horizontal drains, located not more than 100 ft. apart.
  2. Bldg. sewers not more than 100 ft. apart measured from the upstream entrance, of the clean-out.
  3. Each change of direction of bldg. drain or horizontal waste or soil lines greater than 40.
  4. Where more than one change of direction occurs only once C.O. in one run of piping for each 40’.
  5. At base of sail or waste stack.
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11
Q 
12. A city water main is installed in a street, which would be the proper depth that would be required for the water service piping:
A. j4' from the building.
B. 5' from the sewer line.
C. 6' from the sewer line.
D. No more than 6' below the ground.
A

D. No more than 6’ below the ground.

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12
Q 
13. Wiped joints in soil or waste lines shall be at least ... in length:
A. 1-1/4".
B. 1-1/2".
C. 1-3/4".
D. 2".
A

B. 1-1/2”.

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13
Q 
14. Wiped joints in soil or waste lines have a minimum thickness of solder at the thickest part of the joint of:
A. 3/8".
B. 1/2".
C. 3/4".
D. 2".
A

A. 3/8”.

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14
Q 
15. Fixture  flanges of cast brass shall be at least:
A. 3/8".
B. 1/2".
C. 3/4".
D. 7/8".
A

A. 3/8”.

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15
Q 
16.  Adequate means shall be provided for taking care of expansion and contraction of all vertical lines of pipe in structures and shall be used:
A. Every 75 feet.
B. Every 100 feet.
C Only where necessary.
D. Every 150 feet.
A

C Only where necessary.

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16
Q
  1. On the discharge of a pneumatic ejector:
    A. To house side of house trap.
    B. To sewer side of house trap.
    C. To sewer side of house trap with back=flow valve.
    D. To sewer side of house trap with gate valve.
A

B. To sewer side of house trap.

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17
Q 
18. Which dial will turn most on a water meter when a water tap is turned on at the downstream side of the meter:
A. 1 cu. ft.
B. 10 cu. ft.
C. 100 cu. ft.
D. 1000 cu. ft.
A

A. 1 cu. ft.

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18
Q 
19. In a garage storing inflammable gas and oils, an oil separator is required before emptying into the building drainage system or other point of disposal when there are at least:
A. 4 cars.
B. 3 cars.
C. 2 cars.
D. 1 cars.
A

D. 1 cars.

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19
Q
  1. Which of the following is correct for the minimum size riser on water distribution system:
    A. The design of the water distribution system shall conform to accepted engineering practice.
    B. Supply the fixtures with water at rates and pressure as required.
    C. Methods utilized to determine pipe sizes shall be approved.
    D. A, B & C.
A

D. A, B & C.

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20
Q 
21. Waiver most nearly is:
A. Relinquish.
B. Change.
C. Distribute.
D. Follow up.
A

A. Relinquish.

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21
Q
  1. A two family house requires at least on water closet for each family.
    T or F.
A

T.

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22
Q
  1. The free use of elevators for workers does not void the need that water closets should be one floor above or one floor below the floor that they work on.
    T or F.
A

T.

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23
Q
  1. Flush pipes and fittings for water closets & urinals shall be of nonferrous material.
    T or F.
A

T.

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24
Q
  1. Hopper bowls are not permitted inside structures because they prevent exposed surfaces to be thoroughly washed and are readily fouled.
    T or F.
A

T.

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25
Q
  1. Washout bowls may be used if they have integral flushing rims.
    T or F.
A

T.

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26
Q
  1. Fixture traps shall in any case be within … developed length of the fixture:
    A. One
    B. Two.
    C. Three.
    D. Two feet vertical from the trap weir, 30 inches horizontal.
A

D. Two feet vertical from the trap weir, 30 inches horizontal.

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27
Q
  1. The minimum diameter of water closet traps is:
    A. 3”.
    B. 2-1/2”.
    C 2-3/8”.
    D. Trap size shall be consistent with the fixture out.et size.
A

D. Trap size shall be consistent with the fixture out.et size.

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28
Q 
29. By which of the following are taps, wet connections of other connections made to a city water main:
A. Builder.
B. Plumber.
C. Department employees.
D. Owner.
A

C. Department employees.

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29
Q
  1. The size of a new water meter to cover the entire premises is determined by which o the following:
    A. The meter shall not be larger than the service pipe supplying the meter.
    B. A meter shall be restricted to a size and type that will insure accurate registration on the basis of the water requirements of the premises.
    C. For residential premises, the permit applicant shall perform a fixture count and develop a peak flow estimate using Appendix The #1 and #2. The meter shall be sized according to appendix #8.
    D. A, B & C.
A

D. A, B & C.

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30
Q

31 Vacuum breakers are approved by which of the following:
A. Board of Health (BH).
B. Department of Buildings (DOB).
C. Department of Environmental Protection (DEP),
D. American Society of Sanitary Engineers (ASSE).

A

D. American Society of Sanitary Engineers (ASSE).

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31
Q 
32. Approved deck mounted and integral vacuum breakers or equipment mounted vacuum breakers and faucets with integral atmospheric or spillproof vacuum breakers shall be installed in accordance  with manufacturer's instructions and the requirements for labeling with the critical level not less than:
A. 4 inches above the flood level.
B. 3 inches above the flood level.
C. 2 inches above the flood level.
D. 1 inches above the flood level.
A

D. 1 inches above the flood level.

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32
Q
  1. Pipe required vacuum breakers shall be installed not less than:
    A. 6 inches above the flood level rim of the fixture, receptor or device served.
    B. 4 inches above the flood level rim of the fixture, receptor or device served.
    C. 3 inches above the flood level rim of the fixture, receptor or device served.
    D. 1 inches above the flood level rim of the fixture, receptor or device served.
A

A. 6 inches above the flood level rim of the fixture, receptor or device served.

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33
Q 
34. All water cooled air conditioning or refrigeration systems shall be connected to a:
A. Cooling tower.
B. RPZ valves.
C. Metered supply.
D. Needle valve.
A

C. Metered supply.

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34
Q
  1. When the City water is piped to a water conserving device, the piping supplying such water shall discharge at least:
    A. One inch above the overflow of the pan.
    B. Two inches above the overflow of the pan.
    C. Three inches above the overflow of the pan.
    D. Four inches above the overflow of the pan.
A

B. Two inches above the overflow of the pan.

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35
Q 
36. How many inches above the flow pipe in a roof tank must the ball stop inlet be:
A. 2".
B. 1".
C. 3".
D. 4".
A

D. 4”.

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36
Q
  1. Water recycling systems shall receive:
    A. Storm water from roofs, Balconies and condensate reclamation systems.
    B. Gray water discharge only of lavatories from public restrooms in commercial office buildings.
    C. Treated effluent from an approved black water treatment system.
    D. A, B & C.
A

D. A, B & C.

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37
Q
  1. The treated effluent from an approved back water treatment system to be used in a water recycling system shall be regulated by:
    A. Department of Environmental Protection (D.E.P.).
    B. Department ofBuildings (D.O.B.).
    C. Department of Housing (D.O.H.).
    D. Department of Health and Mental Hygiene (D.H.M.H.).
A

D. Department of Health and Mental Hygiene (D.H.M.H.).

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38
Q
  1. Recycled water shall not be utilized for:
    A. Flushing water closets and urinals.
    B. Cooling tower makeup.
    C. Irrigation systems that are located in the same lot as the water recycling system.
    D. Wash water for car washes.
A

D. Wash water for car washes.

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39
Q 
40. Recycle water shall be considered:
A. Non-potable.
B. Potable accepted when used t wash sidewalks and streets.
C. Re-usable for cleaning cars.
D. A, B & C.
A

A. Non-potable.

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40
Q 
Water captured for recycling purposes shall be collected in an approved reservoir constructed of durable, nonabsorbent and:
A. Shall be made of plastic lined tank.
B. Shall be made of non-metalic. 
C. Corrosion-resistant material.
D. Reinforced concrete.
A

C. Corrosion-resistant material.

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41
Q
  1. The holding capacity of the reservoir for recycling system shall be closed and gas tight vessel and the holding capacity of the reservoir shall be a minimum of:
    A. Twice the volume of water required to meet the daily flushing requirements of the fixture supplied with recycled water, but not less than 50 gallons.
    B. Three tomes the volume of water required to meet the daily flushing requirements of the fixture supplied with recycled water, but not less than 100 gallons.
    C. Four times the volume of water required to meet the daily flushing requirements of the fixture supplied with recycled water, but not less than 150 gallons.
    D. five times the volume of water required to meet the daily flushing requirements of the fixture supplied with recycled water, but not less than 200 gallons.
A

A. Twice the volume of water required to meet the daily flushing requirements of the fixture supplied with recycled water, but not less than 50 gallons.

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42
Q 
43. All water to be recycled in an approved manner when entering the reservoir shall pass through an approved filer such as a :
A. Media.
B. Sand.
C. Diatomaceous earth filter.
D. A, B & C.
A

D. A, B & C.

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43
Q
  1. When a recycled water system is used it must go through an appropriate filtration and disinfection process.
    The recycled water shall be disinfected by an approved method that employs:
    A. Ultraviolet.
    B. Chlorine .
    C. Iodine o ozone.
    D. A, B & C.
A

D. A, B & C.

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44
Q 
45. The source of makeup water for recycled water system shall be:
A. Approved by D.E.P.
B. Approved by D.O.B.
C. Potable water.
D. Approved by the F.D.
A

C. Potable water.

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45
Q
  1. The reservoir used to collect the recycled water shall be equipped with an overflow pipe of the same diameter as the influent pipe for the captured water. The overflow shall be connected to building house drainage system:
    A. Indirectly.
    B. Directly to the sanitary drainage system.
    C. Indirectly through a service sink.
    D. Directly to the storm drainage system.
A

B. Directly to the sanitary drainage system.

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46
Q 
47. The overflow from an approved reservoir used to collect the recycled water shall be a minimum size of:
A. 4". 
B. 5".
C. 3".
D. 2".
A

A. 4”.

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47
Q
  1. The venting for a reservoir shall:
    A. Terminate to the nearest wall.
    B. Be installed according to the plumbing code of the sanitary system of chapter PC 9.
    C. Be based on the size of the reservoir influent pipe.
    D. B & C.
A

D. B & C.

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48
Q
  1. The recycled water need to be identified by its appearance using a color:
    A. Dyed blue with a food grade vegetable dye before such water is supplied to the fixtures.
    B. Dyed green with a food grade vegetable dye before such water is supplied to the fixtures.
    C. Dyed yellow with a food grade vegetable dye before such water is supplied to the fixtures.
    D. A & B.
A

D. A & B.

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49
Q
  1. In residential occupancies, hot water (greater than 110F shall be supplied to all plumbing fixtures and equipment utilized for bathing, washing, culinary purposes, cleansing, laundry or building maintenance.
    In nonresidential occupancies, hot water 9greater than 110    F shall be supplied to all plumbing fixtures and equipment utilized for culinary purposes, cleansing, laundry or building maintenance.
    In nonresidential occupancies, hot water (greater than 110F) or tempered water (temperature range between 85F and 110F shall be supplied for bathing and washing purposes.
    Tempered water (85    F to 110F) shall be delivered for accessible hand-washing facilities. With the information given above it can be said that:
    A. There is a difference in the regulations for delivering hot and tempered water to residential and nonresidential occupancies.
    B. In residential occupancies hot water is required for all plumbing fixtures.
    C. In nonresidential occupancies the owner or lessee may provide water temperature no greater than 85    F for bathing and washing facilities.
    D. A, B & C.
A

D. A, B & C.

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50
Q
  1. In order to prevent back siphonage in a flushometer valve water closet, the piping thereto shall be:
    A. Equipped with approved vacuum breaker set not less than 4” above the critical level of the flood level rim of the bowl.
    B. Equipped with approved vacuum breaker set not less than 6” above the critical level of the flood level rim of the bowl.
    C. Equipped with both a continuous vent approved vacuum breaker set not less than 12” above the critical level of the flood level rim of the bowl.
    D. Properly vented.
A

B. Equipped with approved vacuum breaker set not less than 6” above the critical level of the flood level rim of the bowl.

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51
Q
  1. In a three story building, the maximum developed length of the hot water piping is 25 feet, which one of the following is correct:
    A. A circulation line is not required.
    B. A circulation line of the smaller riser is required.
    C. A circulation line is required.
    D. An expansion joint shall be installed.
A

C. A circulation line is required.

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52
Q 
53. Where water meter are installed, the meter shall not be larger than:
A. Tap.
B. Service.
C. Distribution system.
D. The larges riser.
A

B. Service.

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53
Q 
54. The kind of piping that has the greatest coefficient of of expansion per degree rise in temperature is:
A.j Brass.
B. Lead.
C. Copper.
D. Steel.
A

B. Lead.

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54
Q 
55. The disadvantage of the use of the yellow brass pipe for hot water lines and hot water circulation lines is that the yellow brass has a tendency to become:
A. Flexible.
B. Soft.
C. Coated.
D. Fragile.
A

D. Fragile.

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55
Q 
56. The minimum spacing interval for corporation stops (taps) and wet connections for both three quarter (3/4) inch and one (1) inch corporation stops (taps) shall be:
A. Eighteen inches.
B. Twenty-four inches.
C. Thirty inches.
D. Thirty-six inches.
A

A. Eighteen inches.

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56
Q
  1. The one location where combination stop-and-waste valves or cocks are not permitted:
    A. Base of risers.
    B. Accessible pit on water distribution pipe.
    C. Boiler feed.
    D. Outside hose outlet.
A

B. Accessible pit on water distribution pipe.

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57
Q
  1. The flow velocity of the water distribution system shall be controlled to reduce the possibility of water hammer. A water-hammer arresters shall be installed where quick-closing valves are utilized. Water-hammer arrestor shall be installed where quick-closing valves are utilized. Water-hammer arrester shall conform to ASSE 1010, PDI WH201 and shall be instal in accordance the:
    A. Department of buildings employees inspectors.
    B. Department ofEnvironmental Protection.
    C. Engineer of records design and approval.
    D. Manufacturer’s specifications.
A

D. Manufacturer’s specifications.

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58
Q
  1. House control valves, which shall be made of material similar to the corresponding service pipes, shall be … type with the exception of those between the sizes of three quarter inch and two inches, which may be … valves. The house control shall be placed in the service pipe inside the building within two feet of the building wall, and shall be located where accessible at all times. All valves shall be designed for a … minimum working pressure.
    For fire sprinkler and standpipe service pipes, and for any service pipe which supplies sprinkler heads, the house control valve shall be an … valve or an … valve approved by the department of buildings. Fill in the blanks.
    A. Gate, full port ball. 150 psi. OS&Y, indicating.
    B. OS&Y, gate, full port ball, 150 psi, indicating.
    C. Indicating., OS&Y, fate, full port ball, 150 psi.
    D. 150 psi, indicating, OS&Y, gate, full port ball.
A

A. Gate, full port ball. 150 psi. OS&Y, indicating.

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59
Q 
60. Four pipe lines, each made of a different metal or metal alloy are carried in series of angle iron frames. The pipe line which will have the greatest expansion per foot per degree of temperature change is made of:
A. Wrought iron.
B. Steel.
C. Copper.
D. Brass.
A

D. Brass.

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60
Q
  1. when recess fittings are used, the piping should ideally:
    A. Butt the shoulder.
    B. Come within 1/16” of butting the shoulder.
    C. Come within 1/8” of butting the shoulder.
    D. Come within 1/4” of butting the shoulder.
A

A. Butt the shoulder.

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61
Q
  1. The least likely cause of a leak in threaded pipe joint is that:
    A. Not enough pipe joint compound was used.
    B. The threads are not smooth enough.
    C. The number of threads is not sufficient.
    D. Too much pipe joint compound has been used.
A

D. Too much pipe joint compound has been used.

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62
Q
  1. An adequately designed air chamber is installed on the discharge side of a reciprocating pomp. With the pump in operation the probable effect of this air chamber is to:
    A. Increase the capacity of the pump.
    B. Decrease the head against which the pump is operating.
    C. Give a more uniform and steady delivery of water from the pump.
    D. Decrease the power required to operate the pump.
A

C. Give a more uniform and steady delivery of water from the pump.

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63
Q 
64. Wiping solder for lead pipes usually has a melting range (pasty) range of:
A. 150*F to 250*F.
B. 251*F to 350*F.
C. 361*F to 484*F.
D. 475*F to 600*F.
A

C. 361F to 484F.

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64
Q
  1. If the surfaces of the working faces of soldering iron became pitted and burnt, it is a good practice to:
    A. Discard the soldering iron.
    B. Dip the soldering iron in nitric acid.
    C. Reheat until copper oxide forms on the surface.
    D. File these faces with a flat file.
A

D. File these faces with a flat file.

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65
Q 
66. A problem that may exist when the water velocity through the pipes is excessive is its:
A. Sweating. 
B. Noise.
C. Expansion.
D. Leaks.
A

B. Noise.

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66
Q 
667. The ideal height that water in a pipe (barometric loop) cannot be siphoned is most nearly:
A. 14.7 feet.
B. 30 inches.
C. 20.0 feet.
D. 35 feet.
A

D. 35 feet.

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67
Q
  1. Offset swing gooseneck (brass) on service pipe shall consist of::
    A. Three feet of copper tubing and four elbows.
    B. Three feet of brass pipe and four elbows.
    C. Three feet of ductile pipe and four elbows.
    D. Four feet of brass pipe and four elbows.
A

B. Three feet of brass pipe and four elbows.

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68
Q
  1. The potable water supply to lawn irrigation systems shall be protected against back-flow by:
    A. Atmospheric-type vacuum breaker.
    B. Pressure-type vacuum breaker.
    C. Reduced pressure principle back-flow preventer.
    D. A, B & C.
A

D. A, B & C.

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69
Q 
70. A gate valve is to be installed as a house control valve. This valve should be designed for a minimum water pressure of:
A. 125 psi.
B. 150 psi.
C. 175 psi.
D. 200 psi.
A

B. 150 psi.

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70
Q 
71. Metal tags for potable water lines shall:
A. Be a diameter of :
B. Bear the legend:
C. Have letters a height of:
D. Be placed at maximum intervals of:
E. Be installed at both sides of:
A

A. Be a diameter of : 3”.
B. Bear the legend: Safe water.
C. Have letters a height of: 1/2”.
D. Be placed at maximum intervals of: 25’.
E. Be installed at both sides of: at points where pipes pass through walls.

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71
Q 
72. Metal tags for non-potable water lines shall:
A. Be a triangle, each side:
B. Bear the legend:
D. Have letters a height of:
E. Be installed on both sides of:
F. And at all:
A 
A. Be a triangle, each side: 4'.
B. Bear the legend: Water unsafe.
D. Have letters a height of: 1/2".
E. Be installed on both sides of: 25'.
F. And at all: above and below points where pipes pass through floors and walls.
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72
Q 
73. Water distribution system design criteria required capacity at fixture supply outlet. The fixture using the least gallons per minute flow rate is:
A. Drinking fountain.
B. Flushometer  tank water closet.
C. Lavatory.
D. Bidet.
A

A. Drinking fountain.

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73
Q
  1. Water distribution system design criteria required capacity at fixture supply outlet. The fixture using the most gallons per minute flow rate is:
    A. Flushometer valve siphonic water closet.
    B. . Flushometer valve blow out water closet.
    C. Valve urinal.
    D. Hose bib sill cock.
A

A. Flushometer valve siphonic water closet.

B. . Flushometer valve blow out water closet.

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74
Q 
75. There are minimum required sizes of water supplies for pipes serving fixtures. What fixture required sizes of water supplies for pipes serving fixtures. What fixture required sizes of water supplies for pipes serving fixtures. What fixture requires the largest of all the supply pipes:
A. Flush valve urinal.
B. Flushing rim sink.
C. Flush valve water closet.
D. Bathtubs larger than 60"x32".
A

C. Flush valve water closet.

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75
Q 
76. Assume that a three inch diameter hot water galvanized iron pipe is to be replaced with brass pipe or copper tubing. According to recommended practice, the proper size of brass or copper tubing that could be substituted for the 3 inch galvanized line is most nearly:
A. The same commercial size.
B. One commercial size lager.
C. One commercial size smaller.
D. Two commercial size smaller.
A

C. One commercial size smaller.

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76
Q 
77. Of following valves and fittings, the one that offers the least resistance to the flow of water under similar conditions is:
A. 45* degree standard ell.
B. Gate valve.
C. Standard tee, run.
D. Standard tee, side outlet.
A

B. Gate valve.

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77
Q
  1. Cutting brass pipe with a conventional tree-wheel cutter equipped with a thin blade:
    A. Speed up the cutting time and increase the size of the burr.
    B. Slow down the cutting time without forming a pronounced burr.
    C. Speed down the cutting time and decrease the size of the burr.
    D. Slow down the cutting time but form no burrs.
A

A. Speed up the cutting time and increase the size of the burr.

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78
Q 
79. The piping of a newly installed drainage system shall be tested upon completion of the rough plumbing with the head of water not less than:
A. 10'.
B. 15'.
C. 20'.
D. 25'.
A

A. 10’.

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79
Q 
80. The one of the following which should not be considered as a water conserving device is:
A. Air conditioning.
B. A water cooling tower.
C. A spray pond.
D. A water closet.
A

D. A water closet.

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80
Q 
81. In high pressure steam heting systems, the steam pressure is greater than :
A. 15 psig.
B. 20 psig.
C. 25 psig.
D. 30 psig.
A

A. 15 psig.

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81
Q 
82. Type K water service is made of:
A. Cast iron.
B. Copper.
C. Lead.
D. Galvanized steel.
A

B. Copper.

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82
Q 
83. All water services shall be installed below the finished ground surface at a distance of at least:
A. 2'.
B. 3-1/2'.
C. 5'.
D. 8'.
A

B. 3-1/2’.

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83
Q
  1. The piping in all buildings having dual water distribution systems shall be identified by a color coding:
    A. Green for potable water lines and red for non-potable water lines.
    B. Green for potable water lines and yellow for non-potable water lines.
    C. Yellow for potable water lines and green for non-potable water lines.
    D. Yellow for potable water lines and red for non-potable water lines
A

B. Green for potable water lines and yellow for non-potable water lines.

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84
Q 
85. The minimum required diameter of any soil stack extension which passes through the roof is:
A. 3 in. 
B. 4 in. 
C. 5 in.
D. 6 in.
A

B. 4 in.

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85
Q 
86. A device used to prevent back-flow by siphonage action is called a:
A. Relief valve.
B. Sewage ejector.
C. Foot valve.
D. Vacuum breaker.
A

D. Vacuum breaker.

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86
Q 
87. The maximum distance permitted between clean-outs in horizontal drainage lines is:
A. 10'.
B. 30'.
C. 50'.
D. 100'.
A

D. 100’.

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87
Q 
88. A horizontal drainage pipe must have a minimum slope of 1/4 inch per foot if the pipe diameter measures:
A. 2-1///2".
B. 3".
C. 4".
D. 5".
A

A. 2-1///2”.

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88
Q 
889. Curb valves shall be required on all domestic water service pipes with a diameter larger than:
A. 1 in.
B. 1-1/2 in.
C. 2 in.
D. 2-1/2 in.
A

C. 2 in.

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89
Q 
90. When it is necessary to open a sidewalk in order to do plumbing work, a permit shall be obtained from the Department of:
A. Water resources.
B. Public works.
C. Buildings.
D. Transportation.
A

D. Transportation

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90
Q 
91. Th e minimum number of fixture unit allowed for a bathroom group of  fixtures consisting of a water closet (1.6 gpf), lavatory, bathtub or shower, including or excluding a bidet, an emergency floor drain or both. Such fixtures are located in the same room:
A. 5.
B. 6.
C. 7.
D. 8.
A

A. 5.

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91
Q
  1. The minimum number of plumbing fixtures required for a particular type of building occupancy depends mainly on:
    A. The number of person expected to occupy the building.
    B. Where the building is publicly or privately owned.
    C. The load factor numbers.
    D. The age group of the occupancy.
A

A. The number of person expected to occupy the building.

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92
Q 
93. The waste water which would be most likely to corrode a cast iron pipe would have a PH value of:
A. 3.0
B. 5.0
C. 7.0
D. 9.0
A

A. 3.0

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93
Q
  1. The main factor to consider in determining whether permission from a city department is required before connecting automatic power pumps directly to the street main is the:
    A. Total water storage capacity in the building.
    B. Total automatic pump capacity.
    C. Number of persons expected to occupy the building.
    D. Number of fixture units in the building.
A

B. Total automatic pump capacity.

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94
Q 
45. Trap seal shall be vented so that they are at no time subject to a pressure differential of more than:
A. 1 inch of water.
B. 2 inches of water.
C. .1 pound per square inch. 
D. .2 pounds per square inch.
A

A. 1 inch of water.

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95
Q 
96. Machinery or equipment room floor drains that receive clear water only may be connected to a single trap where such trap is located not more than ... from the farthest drain:
A. 5 feet. 
B. 10 feet. 
C. 15 feet.
D. 20 feet.
A

C. 15 feet.

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96
Q 
97. With the exception of commercial dishwashers or laundries, hot water may not be discharged into any part of drainage system at a temperature above:
A. 150*F.
B. 160*F.
C. 170*F.
D. 180*F.
A

A. 150*F.

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97
Q 
98. ?The percentage if the total connected fixture unit flow rate that is likely to occur at any point in the drainage system is called:
A. Discharge coefficient.
B. Velocity coefficient.
C. Load factor.
D. Hydraulic factor.
A

C. Load factor.

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98
Q 
99. The top edge over which water in a receptacle can overflow is called the:
A. Inlet rim.
B. Air-gap level.
C. Drain level.
D. Flood-level rim.
A

C. Drain level.

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99
Q 
100. A device designed to separate and retain undesirable matter from normal waste and permit normal sewage to discharge into the disposal terminal is called:
A. A catch basin. 
B. A dead end.
C. A seepage pit.
D. An interceptor.
A

D. An interceptor.

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100
Q
  1. Paint is not permitted on the jointing material at a joint in cast iron pipe:
    A. At any time .
    B. Until two days after construction of the joint.
    C. Until the entire plumbing installation is completed.
    D. Until after the joint has been tested and approved.
A

D. Until after the joint has been tested and approved.

101
Q
  1. Drainage pipe clean-outs are required:
    A. To be not more than 80 feet apart in a horizontal direction.
    B. To extend horizontally from an underground drain.
    C. At each change of direction of the building drain greater than 45*F.
    D. To be 3/4 the nominal size of the pipe for diameters up to 4 inches.
A

C. At each change of direction of the building drain greater than 45*F.

102
Q 
103. All water used in the construction of the buildings shall be metered when the building is higher than:
A. 3 stories.
B. 4 stories.
C. 5 stories.
D. 6 stories.
A

C. 5 stories.

103
Q 
104. Gas piping should be tested under of pressure  of no less than:
A. 3 psig.
B. 5 psig.
C. 7 psig. 
D. 9 psig.
A

A. 3 psig.

104
Q
  1. When installing gas lines in a building, it is permissible toL:
    A. Reuse gas pipe which has been removed from an existing installation.
    B. Use gas piping for an electrical ground.
    C. Use malleable iron fittings.
    D. Use gasket unions.
A

C. Use malleable iron fittings.

105
Q 
106. The pipe fitting which should be used to connect to a 1" pipe to a 1-1/2" valve is a:
A. Reducing elbow.
B. Bushing.
C. Reducing coupling.
D. Street elbow.
A

B. Bushing.

106
Q 
107. A 2-percent pitch in a pipe line os most nearly equal to a slope of:
A. 1/16" to the foot.
B. 1/8" to the foot.
C 1/4" to the foot.
D. 1/2" to the foot.
A

C 1/4” to the foot.
.01x12=.,125
0.125x2%=.25

107
Q
  1. The main function of a standpipe system in a building is to:
    A. Supply water to the roof tank.
    B. Keep the hot water circulating in order to maintain a constant temperature.
    C. Provide water in case of fire.
    D. Increase the pressure in the water supply system.
A

C. Provide water in case of fire.

108
Q 
109. The one of the following valves which offers the least resistance to the flow of water is:
A. Check valve.
B. Gate valve.
C. Globe valve.
Df. Angle valve.
A

B. Gate valve.

109
Q
  1. The cast iron fitting that is called a tucker connection has:
    A. Male threads on one end and female on the other end.
    B. One end in the form of a hub and female threads on the other end.
    C. On end in the form of a hub and male threads on the other end.
    D. Each end in the form of the hub.
A

B. One end in the form of a hub and female threads on the other end.

110
Q
  1. When bending copper tubing in the field, special equipment is required:
    A. Only for hard temper tubing.
    B. Only for soft temper tubing.
    C. For both soft temper and hard temper tubing.
    D. For neither soft temper nor hard temper tubing.
A

A. Only for hard temper tubing.

111
Q
  1. If the diameter of the vertical stack in a building is smaller than the diameter of the house drain which connected to it, then the bend which joins them should be:
    A. At least one size smaller than the stack.
    B. At least one size larger than the stack.
    C. At least one size lager than the drain.
    D. Larger then both the stack and the drain.
A

B. At least one size larger than the stack.

112
Q 
113. The fixture which has the smallest fixture unit rating:
A. Drinking fountain.
B. Lavatory.
C. Floor drain.
D. Bidet.
A

B. Lavatory.

113
Q
  1. Pipe joint compound should be applied on:
    A. The threads of the male fittings only.
    B. The threads of the female fittings only.
    C. The threads of both male and female fittings.
    D. Either male or female threads, depending on the type of the fittings.
A

A. The threads of the male fittings only.

114
Q
  1. If a pipe with an outside diameter of 7” is to be fastened against the ceiling with a U-strap.
    the distance from the ceiling around the pipe and back to the ceiling should be approximately:
    A. 14”.
    B. 16”.
    C. 18”.
    D. 20”.
A

C. 18”.
C=3,14xD=3.14x7=21.98
21.90/2=11
11+3-1/2+3-1/2=18”.

115
Q 
116. The main reason cast iron pipe is particularly suitable for underground service is that it:
A. Resists corrosion very well.
B. Has a low initial cost.
C. Is easy to handle and join.
D. Can withstand high pressure.
A

A. Resists corrosion very well.

116
Q
  1. The best procedure to follow in most cases when pipe does not screw into a fitting easily, is to:
    A. Use a heavier pipe wrench.
    B. Cut the threads off the pipe and rethread.
    C. Attempt to true up defective threads with a die or a tap.
    D. Heat the fitting with a torch.
A

C. Attempt to true up defective threads with a die or a tap.

117
Q 
118. If the hand operated shut off valve in a water line is turned to the fully closed position, and the water continues to flow through the valve, the most likely defect a plumber would expect to find is:
A. A loose gland.
B. Excessive packing.
C. Improper seating of the valve disc.
D. A loose stuffing nut.
A

C. Improper seating of the valve disc.

118
Q 
119. The main function of a trap in a drainage system is to:
A. Prevent freezing of the pipes.
B. Block of sewer gases. 
C. Prevent loss of water pressure.
D. Catch rings and other objects.
A

B. Block of sewer gases.

119
Q 
120. A combustible gas which may be present in sewer air and which is explosive in the presence of oxygen:
A. Carbon dioxide.
B. Freon.
C. Hydrogen sulfide.
D. Nitrogen.
A

C. Hydrogen sulfide.

120
Q
  1. The main function of back water valve which is same times found in the connection between the water drain pipe and the city sewer system, is to:
    A. Equalize the pressure between the drain pipe and the sewer.
    B. Prevent sewer water from flowing into the drain pipe .
    C. Provide pressure to enable the waste to reach the sewer.
    D. Make sure that there is not too much water pressure in the sewer line.
A

B. Prevent sewer water from flowing into the drain pipe.

121
Q 
122. If water flowing into the top of the tank at the rate of 150 gallons per hour and flowing out at the rate of 3/4 of a gallon every 20 seconds, then the amount of water in the tank is:
A. Increasing by 1//4 gallon per minute.
B. Increasing by 3//4 gallon per minute.
C. Decreasing by 1//4 gallon per minute.
D. Decreasing by 3//4 gallon per minute
A

A. Increasing by 1//4 gallon per minute.
150/60=2.5 gpm
.75x60/20=2.25 gpm
2.5-2.25=.25 gpm.

122
Q
  1. A flexible coupling between a pump shaft and a motor shaft is generally provided in order to:
    A. Reduce the load on the pump.
    B. Permit excess heat to escape.
    C. Permit minor misalignment between the shafts.
    D. Increase the power of the motor.
A

C. Permit minor misalignment between the shafts.

123
Q
  1. The best way to prevent a water pocket from forming when two horizontal steam pipes of different diameter are joined is to:
    A. Use an eccentric fitting.
    B. Use a long fitting so that the slope between the pipes is very gradual.
    C. Provide a drain cock.
    D. Slope the pipe so that the smaller pipe is lower.
A

A. Use an eccentric fitting.

124
Q
  1. The best way to make a temporary repair in a water line with a small leak is by:
    A. Wrapping a rag around it.
    B. Welding or brazing it.
    C. Using a clamped patch.
    D. Drilling, tapping and inserting a plug.
A

C. Using a clamped patch.

125
Q 
126. Brass is an alloy of:
A. Lead and copper.
B. Lead and tin.
C. Tin and copper
D. Zinc and copper.
A

D. Zinc and copper.

126
Q 
127. The information that a plumber would not normally expect to find on each section of cast iron pipe delivered from the factory is the:
A. Manufacturer's name.
B. Weight category.
C. Diameter.
D. Length.
A

D. Length.

127
Q 
128. Steel pipe is generally connected to copper tubing by:
A. Brazing. 
B. Soldering .
C. Wiping.
D. Special fittings.
A

D. Special fittings.

Dialectic

128
Q 
129. Pipe is galvanized by coating it with:
A. Chrome.
B. Tin.
C. Aluminum. 
D. Zinc.
A

D. Zinc.

129
Q 
130. A return bend in a line changes the direction of flow by:
A. 45*.
B. 90*.
C. 135*.
D. 180*.
A

D. 180*.

130
Q 
131. When lagging is used on steam pipes, its main function is to:
A. Compensate for expansion.
B. Prevent corrosion.
C. Reduce radiation heat loss.
D. Reduce steam leaks.
A

C. Reduce radiation heat loss.

131
Q 
132. If the drain of a piping layout is made to a scale of 1/4 inch equals one foot, then a 7'-9" length of piping would be represented by a scaled length on the drawing of approximately:
A. 2". 
B. 7-3/4".
C. 23-3/4".
D. 31".
A

A. 2”.

7.75/4=1.9375”.

132
Q 
133. A pipe reducing coupling normally has:
A. Two female threads.
B. Two male threads.
C. One continuous female thread.
D. one male and one female thread.
A

A. Two female threads.

133
Q 
134. When an adjoining building is erected next to an existing building which is higher, all waste stacks of the new building shall be located a distance from the common lot line of at least:
A. 5 ft.
B. 10 ft.
C. 15 ft.
D. 20 ft.
A

B. 10 ft.

Or 3’ above opening.

134
Q
  1. The following traps are prohibited:
    A. “P” traps.
    B. Drum traps used as solid interceptors.
    C. “S” traps.
    D. Drum traps serving chemical waste system.
A

C. “S” traps.

135
Q 
136. A pipe reducing coupling has:
A. Two female threads.
B. One connections female threads.
C. One male and one female thread.
D. Two female threads.
A

A. Two female threads.

136
Q 
137. All bullhead tees have run openings which are:
A. Smaller than outlet.
B. Larger than outlet.
C. Of the sane size.
D. Of different sizes.
A

A. Smaller than outlet.

137
Q 
138. A close nipple:
A. Has a short section with no threads.
B. Is always less than 3/4" long.
C. Has ends of different diameters.
D. Has threads over its entire length.
A

D. Has threads over its entire length.

138
Q
  1. A reducing tee always has:
    A. At least one opening which is larger than the other two.
    B. Opening of three different sizes.
    C. A branch opening which is smaller than the run.
    D. A branch which is at an angle of 45* degrees to the run .
A

A. At least one opening which is larger than the other two.

139
Q 
140. In addition to acting as a filler between threads m, pipe joint compound  also acts as a:
A. Lubricant.
B. Hardener.
C. Coolant.
D. Permanent bond.
A

A. Lubricant.

140
Q 
141. The valve which is used to permit flow of water in one direction only is called:
A. Check valve.
B. Globe valve.
C. Gate valve.
D. Angle valve.
A

A. Check valve.

141
Q
  1. A method which should be used to free a pipe die from chips while threading a pipe is to:
    A. Use as little lubricating oil as possible.
    B. Set the die loosely on the pipe stock.
    C. Clean the chips of the pipe after each thread is cut .
    D. Partially back off the die at intervals during the turning process.
A

D. Partially back off the die at intervals during the turning process.

142
Q 
143. The main difference between making horizontal and vertical caulked joints in cast iron pipe is that when making up a vertical caulked joint you should not use a:
A. Smaller amount of lead.
B. Smaller amount of oakum.
C. Pouring rope .
D. Special caulking tool.
A

C. Pouring rope .

143
Q 
144. Assume that 2" pipe is connected to a (3") pipe by means of coupling. If the velocity of the flow in the 2" pipe is 36 feet per second, than the velocity of the flow in the 3" pipe is approximately:
A. 16 feet per second.
B. 24 feet per second.
C. 54 feet per second.
D. 81 feet per second.
A 
A. 16 feet per second.
2x2=4
3x3=9
4/9=0.44
0.44x36=15.9
144
Q 
145. When ordering a cross fotting which is to have two outlet openings which are 1" in diameter and two run openings which are 1-1/2" in diameter, a plumber should specify:
A. 1"x1-1/2"x1"x1-1/2".
B. 1-1/2"x1"x1-1/2"x1".
C.1"x1-1/2" cross.
D. 1-1/2"x1" cross.
A

D. 1-1/2”x1” cross.

145
Q
  1. The least likely cause to a leak in a threaded pipe joint is that:
    A. Not enough pipe joint compound was used.
    B. The threads are not smooth.
    C. The number of threads is not sufficient.
    D. Too much pipe joint compound has been used.
A

D. Too much pipe joint compound has been used.

146
Q
  1. The size of a drainage pipe in a storm drainage system shall:
    A. Shall be reduced in direction of flow.
    B. Shall not be reduced in direction of flow.
    C. The sewer side of the pipe shall be smaller.
    D. The upstream side of the pipe shall be larger than the downstream side.
A

B. Shall not be reduced in direction of flow.

147
Q
  1. The best way to assemble the line of piping between a waste stack and a trapped fixture is to:
    A. Start at the fixture and work toward the waste stack.
    B. Start at the waste stack and work toward the fixture.
    C. Let the order of assembly be determined by the details of the proposed installation.
    D. Work from the most accessible location.
A

B. Start at the waste stack and work toward the fixture.

148
Q
  1. When referring to a building drainage system. the term waste pipe should normally applied to:
    A. A piping system which receives human feces.
    B. A piping system which receives the drainage from a water closet.
    C. A pipe that conveys only waste.
    D. Any pipe which flows water.
A

C. A pipe that conveys only waste.

149
Q
  1. Air chambers installed at individual fixtures before July 1, 2009:
    A. Need not be accessible.
    B. Shall be accessible.
    C. Are required for loads of less than 5 fixture units.
    D. Are required for loads of more than 5 fixture units.
A

A. Need not be accessible.

150
Q
  1. When determining the maximum possible depth of water, all primary roof drains:
    A. Shall be assumed to be blocked.
    B. Shall be assumed not to be blocked.
    C. The depth of water shall not be greater than 6 inches.
    D. The depth of water shall not be greater than 4 inches.
A

A. Shall be assumed to be blocked.

151
Q
  1. In the storm drainage system:
    A. Clean-outs shall mot be installed, in the event of heavy rain storm, leakage from any one of them can cause great damage.
    B. Clean-outa shall not be installed over electronic equipment due to stoppages that may occur and serving them could be a catastrophe.
    C. Clean-outs shall be installed in the storm drainage system and shall comply with the provision of this code for sanitary drainage pipe clean-outs.
    D. There are no exceptions for the installations of clean-outs.
A

C. Clean-outs shall be installed in the storm drainage system and shall comply with the provision of this code for sanitary drainage pipe clean-outs.

152
Q
  1. Backwater valve installed in a storm drainage system shall conform with section PC 715 in that:
    A. Backwater valve installed in the branch drain to such area drain that may be subject to overflow.
    B. Backwater valve installed in the branch drain to such area drain that may be subject to overflow pr in the building drain at its point of exit from the building storm drain and downstream from the building storm drain trap.
    C. Backwater valve are mot required in the storm drain because they are subject to stoppages and require constant maintenance.
    D. A & B above.
A

D. A & B above.

153
Q
  1. Plastic piping and fitting shall not be used in the installation of storm drainage systems when:
    A. The residential building is greater than five stories in height.
    B. The building is used for other than residential purposes.
    C. When corrugated polyethylene piping and fittings is less than 12” in diameter.
    D. A, B & C. or A & B.
A

D. A, B & C.

154
Q 
155. Lead waste piping would be subject to the most rapid rate of corrosion from which of the following substances:
A. Acetic acid (concentrated).
B. Ethyl alcohol.
C. Mild solution of sodium chloride.
D. Anhydrous ammonia.
A

A. Acetic acid (concentrated).

155
Q 
156. Copper tubing which has an inside diameter of 1-1/16 inches and a wall thickness of 0.095 inches has an outside diameter of which is most nearly:
A. 1-5/32 inches.
B. 1-3/16 inches.
C. 1-7/32 inches.
D. 1-1/4 inches.
A

D. 1-1/4 inches.

  1. 095x2=0.19
  2. 19+1.0625=1.25.
156
Q 
157. Leadite under certain conditions was used to fabricate building house sewer joints and has a melting point of approximately:
A. 700*F.
B. 400*F.
C. 240*F.
D. 200*F
A

B. 400*F.

157
Q 
158. A wye fitting is to be installed in an existing 2-inch galvanize drainage pipe. The best method to cut this pipe when between two beams is:
A. Hack saw blades.
B. Acetylene torch.
C. 3-whee. cutter.
D. Hydraulic cutter.
A

C. 3-whee. cutter.

158
Q 
159. In preparation to installing X.H.C.I. joints it would be necessary to heat the lead to over:
A. 1000*F.
B. 620*F.
C. 470*F.
D. 360*F.
A

B. 620*F.

159
Q 
160. Pneumatic tools are operated by the  use of:
A. Electricity.
B. Fluid oil pressure.
C. Compressed air.
D. Steam.
A

C. Compressed air.

160
Q 
161. If a trench is excavated 3'-0" wide by 5'-6" deep and 550'-0" long, the total number of cubic yards of earth removed is most nearly:
A. 30.
B. 90.
C. 275.
D. 825.
A

A. 30.

3’x5.5’x50’/27=30.55 cubic yard.

161
Q 
162. Manufacturers usually carry nipples in stock in varying in lengths to:
A. 6 inches.
B. 9 inches.
C. 12 inches.
D. 18 inches.
A

C. 12 inches.

162
Q 
163. When installing C.I. building storm sewer pipe the reference standard used is:
A. ASTM A 74.
B. ASTM A 888.
C. CISP 301.
Dj. A, B & C.
A

Dj. A, B & C.

163
Q
  1. “In determining the size of a storm drain,m, a number of factors must be taken into consideration. One factor which makes sizing the storm drain difficult is the matter of predicting rainfall over a given period. Using a maximum estimate based in the 100-year hourly rainfall rate of 3-inches per hour, the approximate volume of water that will fall on a roof or surface in one hours time can be determined readily. Another factor is the pitch and the material of the roof or surface upon which the rain falls. A surface that has a pitch and smooth surface would increase the flow of water into the drain pipe.”
    According to the above paragraph, the statement which includes all factors needed to determine the size of the drain pipe is the:
    A. Maximum rainfall on the surface.
    B. Pitch and surface of the area.
    C. Equal to that amount of water falling on a flat roof.
    D. Equal to that amount of water falling on a pitched roof.
A

B. Pitch and surface of the area.

164
Q
  1. “In determining the size of a storm drain,m, a number of factors must be taken into consideration. One factor which makes sizing the storm drain difficult is the matter of predicting rainfall over a given period. Using a maximum estimate based in the 100-year hourly rainfall rate of 3-inches per hour, the approximate volume of water that will fall on a roof or surface in one hours time can be determined readily. Another factor is the pitch and the material of the roof or surface upon which the rain falls. A surface that has a pitch and smooth surface would increase the flow of water into the drain pipe.”
    According to the above paragraph, a roof has 45* pitch would probably have a drain pipe size:
    A. Smaller than a roof with no pitch.
    B. Larger than a roof with no pitch.
    C. Equal to the of a flat roof.
    D. Equal to the amount of the water falling in ten minutes.
A

B. Larger than a roof with no pitch.

165
Q 
166. A Master plumbers' license shall be issued to each successful applicants by the commissioner of:
A. Housing and human development.
B. D.E.P.
C. Department of buildings.
D. Department of health.
A

C. Department of buildings.

166
Q 
167. Doubling the diameter will increase its cross-section area four times. If a 1-inch diameter is doubled, the area of the larger circle is most nearly:
A. 1.57 sq.in.
B. 4.00 sq.in.
C. 3.14 sq.in.
D. 2.00 sq.in.
A

C. 3.14 sq.in.

167
Q
  1. A roof of 2,724 square feet is pitched toward the leader at 1/8 inch per foot.
    The horizontal storm drain is pitched towards the building (house) drain at 1//4 inch per foot, The minimum size leader is most nearly:
    A. 2-1/2-inches.
    B. 3-inches.
    C. 4-inches.
    D. 5-inches.
A

B. 3-inches.

168
Q
  1. For a storm drainage system of 4,000 square feet, the drain size and pitch to be installed is:
    A. 4-inch at a pitch of 1/2 unit vertical in 12 unit horizontal (4-percent slope).
    B. 5-inch at a pitch of 1/4 unit vertical in 12 unit horizontal (2-percent slope).
    C. 5-inch at a pitch of 1/8 unit vertical in 12 unit horizontal (1-percent slope).
    D. 6-inch at a pitch of 1/8 unit vertical in 12 unit horizontal (1-percent slope).
A

A. 4-inch at a pitch of 1/2 unit vertical in 12 unit horizontal (4-percent slope).

169
Q 
170. A roof 2,900 sq.ft. is pitched toward the conductor at 1/8 in. per. ft..The horizontal storm drain is pitched towards the building (house) drain at 1/4 in. per ft. The size of the individual conductor trap is:
A. 3-inch.
B. 4-inch. 
C. 5-inch. 
D. 6-inch.
A

B. 4-inch.

170
Q 
171. For large industrial building  the total number of roof and storm water drain line is 6. The number of roof drain lines is 4. All of these lines finally combine to a single-wye fitting downstream of the building (house) trap into the building (house) drain resulting in a combined storm and sanitary system.The minimum number of leader traps which may be used to serve these roof and yard storm water drain lines are:
A. 2.
B. 6.
C. 5.
D. 1.
A

D. 1.

171
Q 
172. The minimum distance that a building storm drain may be connected downstream from any soil stack is:
A. 10 feet.
B. 15 feet.
C. 20 feet.
D. 40 feet.
A

A. 10 feet.

172
Q
  1. The available inlet area of a roof drain strainer used on sun decks shall be:
    A. Not less then the area of the conductor or leader.
    B.. Not less then 1-1/2 times the area of the conductor or leader.
    C. Not less then 2 times the area of the conductor or leader.
    D. Not less then 3 times the area of the conductor or leader.
A

C. Not less then 2 times the area of the conductor or leader.

173
Q 
174. The smallest equivalent diameter of a square leader that may be installed that can drain the roof area of 1000 square feet is:
A. 2"x2".
B. 2-1/2"x2-1/2".
C. 3"x3".
D. 4"x4".
A

C. 3”x3”.

174
Q
  1. All drains carrying clear water, i.e. air conditioning drips, cooling water, etc, may discharge into the storm drainage system:
    A. Behind a leader trap.
    B. Through an indirect waste connection discharging into a trapped funnel or raised lip floor drain.
    C. Through a back water valve.
    D. When connected to a storm sewer.
A

B. Through an indirect waste connection discharging into a trapped funnel or raised lip floor drain.

175
Q
  1. Which one of the following statement is not correct:
    A. Leaders when connected to a combined sewer shall be trapped.
    B. When building storm drains are required to be trapped a fresh air inlet shall be installed.
    C. Air-conditioning drains may connected into the storm drain provided, the drains are trapped.
    D. One trap may serve more than one air-conditioning drain when within 15 ft. of the trap.
A

B. When building storm drains are required to be trapped a fresh air inlet shall be installed.

176
Q 
177. Where more than one building storm drain discharges into a private sewer within a property line, the sewer shall be designed to a velocity most nearly:
A. 8 ft. per sec.
B. 6 ft. per sec.
C. 10 ft. per sec.
D. 3 ft. per sec.
A

D. 3 ft. per sec.

177
Q 
178. roof area 50 feet by 40 feet is connected to the (building) house drain at a point that receives 25 fixture units. At this point the combined storm and sanitary drain has a total allowance in square feet of most nearly:
A. 2,350
B. 2,400
C. 3,333
D. 2,500
A

C. 3,333
50x40=2,000
1,333+2,000=3,333 sq.ft.

178
Q 
179. Roof drain strainers shall extend above the surface of the roof a minimum of:
A. 2 in.
B. 4 in.
C. 6 in.
D. 3 in.
A

B. 4 in.

179
Q
  1. All roofs, paved area, yards, courts and courtyards shall drain into separate storm sewer system, or a combined sewer system, or to an approved place of disposal.
    In accordance with department of environmental protection requirements an approved system for beneficial collection and use of storm water may be installed in which case overflow from such a system shall be discharged to street storm sewer or street combined sewer.
    Whenever an alteration increases impervious surface on the lot greater than 20% of the impervious surface existing when the structure was constructed , such impervious surfaces shall drain into a storm sewer, or a combined sewer system, or to an approved point of disposal. With the exception of:
    Aj. Commercial building less than 2,000 square feet.
    B. Multiple dwellings containing less than 6 families.
    C. Where the total area of the impervious surface proposed to be increased by an alteration after the effective date of this code is less than or equal to 1,000 square feet.
    D. Gas service station.
A

C. Where the total area of the impervious surface proposed to be increased by an alteration after the effective date of this code is less than or equal to 1,000 square feet.

180
Q 
181. A roof and area drain combine a total of 3,500 sq. ft. discharges through a trap to storm building drain.  A soil stack of 1000 fixture units is then connected to the sanitary building drain. The size of the combined building sewer (minimum pitch) at this junction shall be a minimum:
A. 5 in.
B. 6 in.
C. 8 in.
D. 10 in.
A

C. 8 in.
1000-256=744 FU
744x5,2=3,869 sq.ft.
3,869+3,500=7,369 sq.ft.

181
Q 
182. The minimum capacity of a property installed dry-well draining the rain water of 1,800 square feet is most nearly:
A. 180 cu ft.
B. 240 cu.ft.
C. 300 cu.ft.
D. 360 cu.ft.
A

C. 300 cu.ft.
2” in 24 hr.
2”/12=.166617
0.666x1800=300 cu ft,

182
Q 
183. The pitch of the building storm drain was designed at a pit of 1/8 inch per foot and was installed at a pitch of 1% per foot. This installation can be said to be:
A. One have of the drainage pitch.
B. At the designed pitch.
C. Twice the designed pitch.
D. Four times the designed pitch
A

B. At the designed pitch.
.01x12=0.12” or
0.01%x100’=0.12”.

183
Q 
184. A heavy storm will rain at rate of 4 inches per hour, to be adequately designed a dry well must contain a 15 minute run-off. When the drained area is 720 square feet the capacity of the dry-well is most nearly:
A. 45 cubic feet.
B. 60 cubic feet.
C. 189 cubic feet.
D. 720 cubic feet.
A 
B. 60 cubic feet.
4" equal 1/3" per hour.
1/3x720=240 cu.ft.
15 min.=1/4 hour.
1/4x240=60 cu ft.
184
Q
  1. A hole in a water pipe is estimated to discharge 1 pint of water every six minutes. If the hole doubled in size the loss of water per day is most nearly:
    A. 250 gallons.
    B. 60 gallons.
    C. 125 gallons.
    D. Unknown as the size of the hole was not determined.
A 
C. 125 gallons.
Ratio is 4 to 1.
There are 10 of 6 minute in 1 hour.
10x4=40 pint per hour.
40x24=960 pints per day.
2 pints in quart and 4 quart in gallon 2x4=8 pint in gallon.
960/8=120 gal. per day.
185
Q 
186. A four family house, in which each family unit has one water closet (low down tank 1.6 gpf) , one lavatory, one bathtub, one bidet, emergency floor drain, and oner kitchen sink with food waste grinder and dishwasher.There is 4000 square feet of storm water area to be drained. The size of the combined building sewer if installed at a pitch of 1/8 inch per foot is a minimum of:
A. 4".
B. 5".
C. 6".
D. 8".
A

C. 6”.

186
Q 
187. What os the minimum diameter size of a leader or conductor:
A. 1-1/4".
B. 1-1/2".
C. 2".
D. 3".
A

C. 2”.

187
Q 
188. What is the minimum diameter size of a horizontal storm drainage pipe at any pitch:
A. 1-1/2".
B. 2".
C. 2-1/2".
D. 3".
A

D. 3”.

188
Q 
189. What is the minimum diameter size of a soil or waste vent stack:
A.  1-1/2".
B. 2".
C. 2-1/2".
D. 3".
A

A. 1-1/2”.

189
Q 
190. What is the minimum diameter size waste stack:
A. 1-1/2".
B. 2".
C. 2-1/2".
D. 3".
A

A. 1-1/2”.

190
Q 
191. What is the minimum size soil stack:
A. 1-1/2".
B. 2".
C. 2-1/2".
D. 3".
A

D. 3”.

191
Q 
192. What is the minimum diameter size pipe for a combination drain and vent pipe connecting to a horizontal branch or stack:
A. 1-1/4".
B. 1-1/2".
C. 2".
D. 2-1/2".
A

C. 2”.

192
Q 
193. Horizontal drainage piping shall be installed in uniform alignment at uniform slopes. The minimum slope of a horizontal drainage pipe shall be in accordance with table 704.1. A slope of 1/4 inch per foot is the minimum slope for pipe size:
A. 2" or less.
B. 2-1/2" or less.
C. 3" to 6".
D. 8" or larger.
A

B. 2-1/2” or less.

193
Q 
194. American standard taper pipe threads are designed by specifying in sequence the nominal size, of threads per inch, and the symbols for thread series and form. What is the taper of the thread:
A. 1 in 16.
B. 0.75 per ft.
C. 1 in 12.
D. A & B.
A

D. A & B.

194
Q 
195. How many threads per inch using the national pipe thread standard are there per inch on pipe diameters one through two inches:
A. 27.
B. 18.
C. 14. 
D. 11-1/2.
A

D. 11-1/2.

195
Q 
196. The caulking ferrule specification for pipe size 4 inches in diameter has an inside diameter of:
Aj. 5 inches.
B. 4-1/2 inches.
C. 4-1/4 inches.
D. 4 inches.
A

C. 4-1/4 inches.

196
Q 
197. Soldering bushing shall be:
A.  Yellow brass.
B. Stainless steel.
C. Red brass.
D. Galv. steel.
A

C. Red brass.

197
Q 
198. Fitting used in the drainage system for change in direction. A quarter bend may be permitted vertical to horizontal or horizontal to horizontal for a:
A. 3-inch or smaller fixture drain.
B. 2-inch or smaller fixture drain.
C. 1-1/2-inch or smaller fixture drain.
D. 1-1/4-or  smaller fixture drain.
A

B. 2-inch or smaller fixture drain.

198
Q 
199. A floor drain shall have a minimum fixture unit value and size of trap:
A. 2 FU, 2" trap.
B. 2 FU, 3" trap.
C. 3 FU, 3" trap.
D. 4 FU, 3" trap.
A

B. 2 FU, 3” trap.

199
Q
  1. A shower head over a bathtub or whirlpool bathtub attachment:
    A. Does not increase the DFU valve.
    B. Increases the DFU value.
    C. Shall have a minimum flow pressure 4 psi.
    D. Minimum pipe size 3/8”.
A

A. Does not increase the DFU valve.

200
Q 
201. Joints between glass pipe and other type of material shall be made with adapters having a:
A. Plastic seal.
B. TFE seal.
C. Nylon seal.
D. Elastomeric seal.
A

B. TFE seal.

201
Q
  1. Joints between copper or copper-alloy tubing and cast-iron pipe shall be n=made with a brass ferrule or compression joint.
    The copper or copper-alloy tubing shall be:
    A. Soldered to the ferrule.
    B. The ferrule shall be joined to the cast-iron hub by a caulked joint.
    C. A mechanical compression joint.
    D. A, B & C.
A

D. A, B & C.

202
Q 
202. Joints between cast-iron and galvanized steel or brass pipe shall be made by either:
A. Caulked joints.
B. Threaded joints.
C. Adapter fitting.
D. A, B & C.
A

D. A, B & C.

203
Q 
204. Joints between different grades of plastic pipe or between plastic pipe and other piping material shall be made with an approved:
A. Adapter fitting.
B. Soldered joint.
C. Brazed joint.
D. Compression.
A

A. Adapter fitting.

204
Q 
205. Joints between glass pipe and other type of materials shall be made with adapters having a:
A. Plastic seal.
B. TFE seal.
C. Brazed joint.
D. Welded joint.
A

B. TFE seal.

205
Q 
206. Joints between plastic pipe and cast-iron hub pipe shall be made by a:
A. Welded joint.
B. Caulked joint.
C. Mechanical compression joint.
D. B & C.
A

D. B & C.

206
Q 
207. Joints between lead pipe and other type of material shall be made by a wiped joint to a:
A. Caulking ferrule.
B. Soldering nipple.
C. Bushing.
D. A, B & C.
A

D. A, B & C.

207
Q 
208. Joints between borosilicate glass pipe to other materials shall be made with:
A. Threaded joints.
B. Welded or burned joints.
C. Adapter having a  TFE seal.
D. Soldering joints.
A

C. Adapter having a TFE seal.

208
Q 
209. Joints between stainless steel drainage systems shall and other piping materials shall be made with approved:
A. Threaded joints.
B. Brazed joints.
C. Caulked joints.
D. Mechanical couplings.
A

D. Mechanical couplings.

209
Q 
210. Caulking ferrule shall be of :
A. Red brass.
Bj. Copper.
C. /Yellow brass.
D. Marine brass.
A

A. Red brass.

210
Q 
211. The inside diameter of a 2 inch, 3 inch and 4 inch caulking ferrule shall be:
A. 1/4 inch smaller inside diameter.
B. 1/4 inch larger inside diameter.
C. Same nominal size as started.
D. 12 inch larger inside diameter.
A

B. 1/4 inch larger inside diameter.

211
Q 
212. The length of all approved caulking ferrule of 2, 3 and 4 pipes sizes shall be:
A. 4 inches.
B. 4-1/2 inches
C. 5 inches.
D. 6 inches.
A

B. 4-1/2 inches

212
Q 
213. The minimum  weight of  a 2 inch pipe size caulking ferrule is:
A. 1 pound.
B. 1/4 pound.
C. 1/2 pound.
D. Two pound.
A

A. 1 pound.

213
Q 
214. The minimum weight of a three inch caulking ferrule is:
A. 1-1/4 lbs.
B. 1 lb, 12 ounces.
C. Two lbs.
D. Two lbs. 12 ounces.
A

B. 1 lb, 12 ounces.

214
Q 
215. The minimum weight of a 4 inch pipe size caulking ferrule is:
A. 1 pound 12 ounces.
B. 2 pound 4 ounces.
C. Two pound 8 ounces.
D. Two pound 12 ounces.
A

C. Two pound 8 ounces.

215
Q 
215. Soldering bushing shall be:
A. Yellow brass.
B. Marine brass.
C. Red brass.
D. Galvanized steel.
A

C. Red brass.

216
Q 
217. Soldering bushings  specification indicate the minimum weight of 1-1/4 inch pipe size:
A. 6 ounces.
B. 8 ounces.
C 14 ounces.
D. 16 ounces.
A

A. 6 ounces.

217
Q 
218. Soldering bushing specification indicate the minimum weight of 1-1/2 inch pipe size is:
A. 6 ounces.
B. 8 ounces.
C. 14 ounces.
D. 16 ounces.
A

B. 8 ounces.

218
Q 
219. Soldering bushing specification indicate the minimum weight of 2-inch pipe size is:
A. 6 ounces.
B. 8 ounces.
C. 14 ounces.
D. 16 ounces.
A

C. 14 ounces.

219
Q 
220. Soldering bushing specification indicate the minimum weight of 2-1/2 inch pipe size is::
A. 14 ounces. 
B. 16 ounces.
C. 1 pound 6 ounces.
D. 3 pound.
A

C. 1 pound 6 ounces.

220
Q 
221. Soldering bushing specification indicate the minimum weight of 3 inch pipe size is:
A. 1 lb. 6 ounce. 
B. 2  lbs.
C. 2 lb. 6 ounce.
D. 3 lbs.
A

B. 2 lbs.

221
Q 
222. Soldering bushing specification indicate the minimum weight of 4 inch pipe size is:
A. 2 pounds.
B. 3 pounds 8 ounces.
C. 4 pounds.
D. 5 pounds.
A

B. 3 pounds 8 ounces.

222
Q 
223. For SI: one inch is equal to:
A. 18 mm.
B. 20 mm.
C. 25.4 mm.
D. 30 mm.
A

C. 25.4 mm.

223
Q 
224. For SI one ounce is equal to:
A. 16 g.
B. 22 g.
C. 28.35 g.
D 30 g.
A

C. 28.35 g.

224
Q 
225. For SI: one pound is equal to:
A. 40 Kg.
B. 0,454.Kg.
C. 30 Kg.
D. 40 Kg.
A

B. 0,454.Kg.

225
Q 
226. O-ring joints for stainless steel drainage systems shall be made with an approved:
A. Welded joint.
B. Elastomeric seal.
C. Nylon seal.
D. Rubber seal.
A

B. Elastomeric seal.

226
Q 
227. All connections and changes in direction of the sanitary drainage system shall be made with approved:
A. Water supply fittings.
B. Vent supply fittings.
C. Drainage fittings.
D. Gas supply fittings.
A

C. Drainage fittings.

227
Q 
228. Drainage fittings shall not have:
A. Ledges, reduction capable of retarding flow in piping.
B. Obstruction of flow in the piping.
C. Shoulders.
D. A, B & C.
A

D. A, B & C.

228
Q 
229. Threaded drainage pipe fittings shall be of the:
/A. Smooth type.
B. Recessed drainage type.
C. Water supply type.
D. Non-recessed type.
A

B. Recessed drainage type.

229
Q
  1. Installation of drainage fittings shall be installed to guide sewage and waste:
    A. In the direction of flow.
    B. In opposite directions.
    C. Speeds of upward of 4 feet per second.
    D. in an upward direction.
A

A. In the direction of flow.

230
Q 
231. Building sewer shall be provided with clean-outs located not more than:
A. 50' apart.
B. 75' apart.
C. 100' apart.
D. 125' apart.
A

C. 100’ apart.

231
Q 
232. Change in direction by combination fittings, side inlets or increasers shall be installed in accordance with Table 706.3 based on the pattern of flow created by the fitting. Put an X in the areas of the table below which shows change in direction:
A-horizontal to vertical
B-vertical to horizontal
C-horizontal to horizontal
for types of fittings:
Sixteenth bend
Eighth bend
Sixth bend
Quarter bend
Short sweep
Long sweep
Sanitary tee
Wye
Combination wye and eighth bend
A 
Sixteenth bend  X X X
Eighth bend       X X X
Sixth bend         X X X
Quarter bend     X a a
Short sweep      X a,b a
Long sweep       X X X
Sanitary tee        c
Wye                   X X X
Combination wye and eighth bend
                          X X X
Where a - the fitting shall only be permitted for a 2-inch or smaller fixture drain,
            b - three inches or larger,
            c - for a limitation on double sanitary tees, see Section 706.3.
232
Q 
233. Clean-out plugs used in drainage systems shall be made of:
A. Brass.
B. Plastic.
C. Galvanized steel.
D. A & B.
A

D. A & B.

233
Q
  1. The following types of joints and connections shall be prohibited in the plumbing drainage system, which type of joint and connection is permitted:
    A. Cement, concrete, mastic, hot poured bituminous joints.
    B. Joints made with fittings not approved for the specific installation and joints between different diameter pipes made with elastomeric rolling O-rings.
    C. Solvent-cement joints between different types of plastic pipe and saddle-type fitting.
    D. Joints between cast-iron and galvanized steel or brass pipe shall be made by either caulked or threaded joints or with an approved adapter fitting.
A

D. Joints between cast-iron and galvanized steel or brass pipe shall be made by either caulked or threaded joints or with an approved adapter fitting

234
Q 
235. Whenever brass clean-outs plugs are used they shall not be utilized with:
A. Metallic drains.
B. Waste piping.
C. Vent piping.
D. Borosilicate glass systems.
A

D. Borosilicate glass systems.

235
Q
  1. Plugs shall have raised square or countersunk square heads. Countersunk heads shall be installed where raised heads are:
    A. A trip hazard.
    B. Not a tip hazard.
    C. Hexagon head.
    D. A minimum of one-inch above floor area.
A

A. A trip hazard.

236
Q 
237. All horizontal drains shall be provided with clean-outs located not more than:
A. 50'.
B. 75'.
C. 100'.
D. 125'.
A

C. 100’.

237
Q 
238. If a house drain is 175 feet measured from the soil or waste stack to the main house trap, how many clean-outs are required:
A. 1.
B. 2.
C. 3.
D. 4.
A

B. 2.

238
Q
  1. Clean-outs are measured in the building house drain from:
    A. The upstream entrance of the slean-out.
    B. The downstream entrance of the slean-out.
    C. A or B.
    D. The center of the downstream entrance of the slean-out.
A

A. The upstream entrance of the slean-out.

239
Q 
240. For building sewer 8 inches and larger, manholes shall be provided and located not more than ... from the junction of the building and building sewer, at each change of direction and at intervals of not more than ... .
A. 100', 100'.
B. 200', 400'.
C. 300', 300',
D. 400', 400'.
A

B. 200’, 400’.

240
Q 
241. Clean-outs shall be installed at each change of direction of the building drain or horizontal waste or soil lines greater than;
A. 22-1/2*.
B. 45*.
C. 90*.
D. 180*.
A

B. 45*.

241
Q 
242. Where more than one change of direction occurs in a run of piping greater than 45* only one clean-out shall be required for each ... of developed length of the drainage piping:
A. 40'.
B. 30'.
C. 20'.
D. 10'.
A

A. 40’.

242
Q 
243. Joints between copper or copper-alloy tubing and cast-iron hub pipe, the ferrule shall be joined to the cast iron hub by a:
A. Brass ferrule.
B. Compression joint.
C. A & B.
D. Threaded joint.
A

C. A & B.

243
Q 
244.  Joints between copper and copper-alloy tubing and cast iron hub pipe. The copper or copper-alloy tubing shall be ... to the ferrule:
A. Soldered.
B. Brazed.
C. Welded.
D. Caulked.
A

A. Soldered.

244
Q 
245. Joints between copper or copper-alloy tubing and cast iron hub pipe, the ferrule shall be joined to the cast-iron hub by a:
A. Caulked joint.
B. Mechanical compression joint.
C. A & B. 
D. An 1/8 bend is required.
A

C. A & B

245
Q 
246. At the base of the each waste or soil stack:
A. Access shall be made available.
B. A quarter bend is required.
C. A clean-out shall be provided.
D. An 1/8 bend os required.
A

C. A clean-out shall be provided.

246
Q

247j. Manholes serving a building drain shall have:
A. Air holes 1” diameter for ventilation.
B. Air holes 3/4” diameter for ventilation.
C. Secured gas-tight covers.
D. Secured water-tight covers.

A

C. Secured gas-tight covers.

247
Q
  1. Clean-outs on concealed piping or piping under the floor slab or in a crawl space of less than 24” on height or a plenum shall be extended through and terminate:
    A. Flush with the finished wall.
    B. Flush with the finished floor or ground surface.
    C. Shall be extended to the outside wall.
    D. A, B & C.
A

D. A, B & C.

248
Q
  1. Where it is necessary to conceal a clean-out or to terminate a clean-out in an area subject to vehicular traffic, the covering plate, access door or clean-out:
    A. Shall be covered with cement.
    B. May be covered with plaster.
    C. May be covered over with any permanent finish material.
    D. Shall be of an approved type designed and installed for this purpose.
A

D. Shall be of an approved type designed and installed for this purpose.

249
Q
  1. Every clean-out shall be installed to open to allow cleaning in the:
    A. Direction of the flow of the drainage pipe.
    B. Direction of right angles thereto.
    C. A & B.
    D. Opposite direction of flow only.
A

C. A & B.

Plumbing (23 decks)

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