0
Q
2. What is the maximum distance between clean outs on a horizontal drainage lines: A. 100'. B. 75'. C. 50'. D. 25'.
A
A. 100’.
1
Q
1. water pressure can be determined by using a: A. Pressure gauge. B. Foot valve. C. Gasoline engine pump. D. Centrifugal pump.
A
A. Pressure gauge.
2
Q
3. Rain water is: A. Dirty. B. Soft. C. Medium. D. Hard.
A
B. Soft.
3
Q
4. The purpose of a grease trap or interceptor is to: A. Catch the water. B. Prevent siphonage. C. Prevent back pressure. D. Separate the grease from the water.
A
D. Separate the grease from the water.
4
Q
5. In testing wiping solder, if the sample appears chalky and porous, it probably contains too much: A. Lead. B. Tin. C. Zinc. D. Antimony.
A
A. Lead.
5
Q
6. The "spur"is: A. An outlet on a corporation pipe. B. A hub outlet on cement lined pipe. C. A hub outlet on cast iron, concrete or earthenware pipe. D. An outlet on water mains.
A
C. A hub outlet on cast iron, concrete or earthenware pipe.
6
Q
7. Seating of cold water pipes in basements may be prevented by: A. Placing a gutter under them. B. Painting them. C. Keeping pipes 6" apart. D. Covering them.
A
D. Covering them.
7
Q
8. A Parmelee wrench is used in: A. Making up basin cocks. B. Making up combination sink faucet. C. Making up galvanized screw pipe. D. Making up brass pipe.
A
D. Making up brass pipe.
8
Q
9. A rust joint is made up using iron borings (fillings). Sal-ammoniac and flower of Sulphur, and used only in acid waste lines; found in what portion of the drainage system? (No longer legal). A. House sewers. B. Corporation pipe. C. House drains. D. Duriron pipe.
A
A. House sewers.
9
Q
- What are one of the requirements before a plumber may emerge in business as a licensed plumber:
A. 2 years experience and a technical degree in engineering.
B. 5 years experience working under a licensed plumber.
C. 7 years experience working under a licensed plumber.
D. 10 years experience as a maintenance worker.
A
C. 7 years experience working under a licensed plumber.
10
Q
11. The only vent allowed in New York city is: A. Yoke. B. Circuit. C. Individual. D. More than one.
A
D. More than one.
11
Q
12. A leader trap may lose its seal due to: A. Velocity of water. B. Not vented. C. Evaporation. D. Siphonage.
A
C. Evaporation.
12
Q
13. An aqua phone is an instrument: A. Testing water. B. Listening to lines. C. Purifying water. D. Ascertaining leaks in water service pipes.
A
D. Ascertaining leaks in water service pipes.
13
Q
14. Plumbing traps are all of one design: A. True. B. False. C. False except for "S" traps. D. True except for 3/4 "S" traps.
A
B. False.
14
Q
- Which of the following statements are true:
A. Curb boxes may be installed at the option of the owner.
B. Curb boxes must be installed.
C. Curb boxes may be installed whenever the plumber defines its need.
D. Curb boxes must be installed on all water services over 1-inches.
A
D. Curb boxes must be installed on all water services over 1-inches.
15
Q
16. An instrument used in boring a hole into the side of a lead bend is a: A.Awl. B. Divider. C. Top borer. D. Bit.
A
C. Top borer.
16
Q
17. The proper flux to use in wiping solder joints is: A. Solder paste. B. Sal-ammoniac. C. Rosin. D. Tallow.
A
D. Tallow.
17
Q
18. Siphonage is a detriment to plumbing in the siphonage of: A. Water closet. B. Domestic boilers. C. Cellar drainers. D. Pumps.
A
B. Domestic boilers.
18
Q
19. The best lead to use in caulking cast iron is: A. Old lead waste. B. New lead waste. C. Pig. D. "Df" lead.
A
C. Pig.
19
Q
20. Steam exhaust, boiler blow-off or drip pipes may connect to the: A. Soil pipe. B. House drain. C. Outer air. D. Indirectly to the drainage system.
A
D. Indirectly to the drainage system.
20
Q
- The minimum diameter of traps for water closet bowls shall be at least:
A. Not larger than the drainage pipe into which the trap discharges.
B. Larger than the drainage pipe into which the trap discharges.
C. Same size or larger than the drainage pipe into which the trap discharges.
D. A minimum of 2-inches.
A
A. Not larger than the drainage pipe into which the trap discharges.
21
Q
22. Three separate laundry trays may be connected to: A. One; 1-1/2" trap. B. One; 2" trap. C. Two; 1-3/4" trap. D. C. Two; 1-1/4" trap.
A
B. One; 2” trap.
22
Q
23. Combination wye and eight bend (long turn TY) may be used: A. Horizontal to vertical. B. Vertical to horizontal. C. . Horizontal to horizontal. D. A, B and C.
A
D. A, B and C.
23
Q
- Slip joints may be used:
A. Trap outlet, trap inlet and within the trap seal.
B. Only between the trap and the fixture.
C. Trap outlet, trap inlet but not in the trap seal.
D. Anywhere its needed, as long as access can be made.
A
A. Trap outlet, trap inlet and within the trap seal.
24
25. The drain-off (drain valve) of a domestic hot water heater shall connect to the:
A. Bottom of each tank-type water heater and hot water storage tank.
B. Sink trap on the fixture side.
C. Sink trap above the water seal.
D. House drain.
A. Bottom of each tank-type water heater and hot water storage tank.
25
26. The term "trap seal" shall mean:
A. Trap as whole.
B.. Vertical distance between crown weir and dip of trap.
C. Vertical distance between clean pot and crown of trap.
D. Vertical distance between dip and outlet.
B.. Vertical distance between crown weir and dip of trap.
26
```
27. A fixture placed then two feet vertical above the trap may displace the seal due to:
A. Evaporation.
B. Capillary attraction.
C. Back pressure.
D. Self-siphonage.
```
D. Self-siphonage.
27
```
28. A soil stack is:
A. A horizontal soil pipe.
B. Any pipe that receives waste matter.
C. Any pipe which receives fecal matter.
D. A vertical soil pipe.
```
D. A vertical soil pipe.
28
```
29. "Duriron" is a mixture of
A. Asphaltic compound.
B. Carbon, manganese, silicon, chromium, copper, molybdenum.
C. Pipe compound.
D. Cement mortar and a smooth trough.
```
B. Carbon, manganese, silicon, chromium, copper, molybdenum.
29
```
30. Sheet lead for pans shall not weigh less than
A. 3 lbs. per sq.ft.
B. 4 lbs. per sq.ft.
C. 5 lbs. per sq.ft.
D. 6 lbs. per sq.ft.
```
B. 4 lbs. per sq.ft.
30
```
31. The relief vent or fresh air intake 9inlet0 pipe should connect with the main drain by means of a:
A. "Y" fitting.
B. "TY" fitting.
C. "T" fitting.
D. Tapped fitting.
```
C. "T" fitting.
31
32. An approved water pressure reducing valve shall be installed:
A. Instead of a hot water relief valve.
B. To reduce the pressure in the building water distribution piping to 85 psi static or less.
C. On hot water domestic tank.
D. On outlets of swimming pools.
B. To reduce the pressure in the building water distribution piping to 85 psi static or less.
32
```
33. What percentage of steel does genuine iron contain:
A. None.
B. 1%.
C. 2%.
D. 5%.
```
B. 1%.
33
```
33. The minimum steam pressure for drainage or malleable fitting is:
A. 125 lbs.
B. 150 lbs.
C. 200 lbs.
D. 250 lbs.
```
B. 150 lbs.
34
```
34. By convection it's meant:
A. Circulation of water in hot water tanks.
B. Down-draft.
C. Up-draft.
D. Radiating of heat.
```
A. Circulation of water in hot water tanks.
35
```
35. The amount of lead waste pipe allowed for any one fixture is:
A. 2 ft.
B. 5 ft.
C. 10 ft.
D. 20 ft.
```
B. 5 ft.
36
```
36. The pressure gauge at the foot of the water line registers 86 pounds. The height is most nearly:
A. 43.5 feet.
B. 100 feet.
C. 198.14 feet.
D. 200 feet.
```
C. 198.14 feet.
37
37. Solder can be purified by:
A. Heating to 900*F (red hot) and add sulphur.
B. Heating to 500*F and using rosin.
C. Heating to 500*F and using sperm candle.
D. Heating, cooling and skimming the dross off.
A. Heating to 900*F (red hot) and add sulphur.
38
```
38. In yarning "Duriron" the following should be used:
A. Fiber.
B. Oakum.
C. Hemp.
D. Jute.
```
A. Fiber.
39
```
39. Zeolite is used for:
A. Purifying water.
B. Heating water.
C. Softening water.
D. Coating water pipes.
```
C. Softening water.
40
```
40. The minimum size "branch"soil pipe from one water closet may be"
A. 2".
B. 3".
C. 4".
D. 6".
```
B. 3".
41
```
41. The minimum sized tap allowed for any service shall be:
A. 1/2".
B. 5/8".
C. 3/4".
D. 1".
```
C. 3/4".
42
```
42. What id the smallest vent pipe allowed passing through the roof:
A. 1-1/2".
B. 2".
C. 3".
D. 4".
```
D. 4".
43
43. Water service pipes should be run:
A. Any place where convenient.
B. Service pipes shall be laid in a straight line at right angles to the main.
C. At right angle to the main and under driveways.
D. According to the house sewer.
B. Service pipes shall be laid in a straight line at right angles to the main.
44
44. Which of the following statements is not true:
A. Urinal flushes must be supplied with a maximum 1-3/5 gallons of water per flush.
B. Water closet flush tanks must be supplied with a maximum 1-3/5 gallons of water per flush.
C. Water must supply swimming pools at a rate 20 gals.per bather per hour.
D. Blowout design water closets (3.5 gallons per flushing cycle.
C. Water must supply swimming pools at a rate 20 gals.per bather per hour.
45
```
45. Th Copper Development Association (CDA) in their copper tube handbook, states that fluxes best suited to the 95-5 solder are petroleum-based pastes (fluxes) conforming to ASTM B813 containing chlorides of:
A. Lead free, zinc chloride.
B. Zinc and copper.
C. Citric acid and ammonium.
D. Citric acid and sperm.
```
A. Lead free, zinc chloride.
46
46. In office buildings, the water closet may be located with respect to the regular working place as follows:
A. Two floors below.
B. At any convenient location in the building.
C. Two floors above.
D. Not more than one story above or below.
D. Not more than one story above or below.
47
```
47. Excluding the direct pressure system of distribution of water, upon which one of the following principles of scientific fact does the other accepted method of distribution of water supply depend:
A. Screw turbine operation.
B. Siphonic action.
C. Booster pump.
D. Gravity flow.
```
D. Gravity flow.
48
```
48. Gas piping should be subjected to a minimum test of:
A. 30 inches of mercury.
B. 3 lbs.
C. 7 lbs. psi.
D. 1 lbs. psi.
```
B. 3 lbs.
49
49. The most practcal method of calculating the water supply demand of a given fixture is based on a rate of flow equal to:
A. 7-1/2 gallons for every fixture unit allowed on waste size.
B. Rate of flow of all faucets supplying fixtures when operation is at full pressure of street service.
C. 1/2 rate of delivery for size of pipe at source.
D. An equivalent in gallons of the total number of waste units allowed for drainage purposes.
A. 7-1/2 gallons for every fixture unit allowed on waste size.
50
```
50. In which of the following respects does cad\st iron pipe used in water main installation not differ from the cast iron used in soil pipe installations:
A. Length of sections.
B. Material used in manufacturing.
C. Method of measuring.
D. Method of caulking joints.
```
C. Method of measuring.
51
```
51. In order to overcome frictional losses we should:
A. Change the type of pipe.
B. Increase the pressure.
C. Install more fittings.
D. Increases the capacity of the pipes.
```
D. Increases the capacity of the pipes.
52
52. The seal of a trap is:
A. The water contained in the trap from inlet level to outlet level.
B. A column of water retained from the overflow to the dip of the trap.
C. The body of water contained in the trap from the overflow to the bottom of the trap.
D. The body of water contained between the dip of the trap and the bottom of the trap.
B. A column of water retained from the overflow to the dip of the trap.
53
53. Most failure in a water supply systems are due to:
A. Careless planning.
B. Poor mechanical construction of the joints.
C. Electrolytic action.
D. Lack of expansion joints.
A. Careless planning.
54
54. The corporation stop, the curb stop, and the meter stop which are used to control section of the water service have which one of the following features in:
A. All require the same tool to operate.
B. All automatically serve as drain when closed.
C. All have one side threaded.
D. All ate use on copper pipe only.
A. All require the same tool to operate.
55
55. Which factor listed can be discarded as unimportant in the installation of a water service pipe:
A. Consideration should be given to the soils' chemical reaction to the material selected.
B. Pipe should be installed deep enough to protected from frost.
C. Pipe should be installed as direct as possible avoiding unnecessary bends, fittings, etc.
D. Pipe should be of proper size.
A. Consideration should be given to the soils' chemical reaction to the material selected.
56
```
56. Welded joints are allowed on:
A. Water pipe made of stainless steel.
B. Soil pipe made of cast iron.
C. Vent pipe made of galvanized pipe.
D. Waste pipe made of wrought iron.
```
A. Water pipe made of stainless steel.
57
57. The overflow from a house tank supply:
A. May connect to the soil stack if a check valve is used.
B. May connect to a leader.
C. Should discharge within 6" above the roof.
D. Should be trapped and connected to a waste stack.
C. Should discharge within 6" above the roof.
58
58. Which one of the following is not one of the three major reasons for ventilation of the plumbing system:
A. To prevent deterioration of materials.
B. To remove obnoxious odors from the building.
C. To prevent retardation of flow.
D. To maintain atmospheric pressure in the system.
A. To prevent deterioration of materials.
59
59. The loss of seal in a trap is prevented by:
A. Decreasing size of outlet trap.
B. Designing trap with a large blow-like shape.
C. Increasing depth of seal to 6 inches.
D. Properly ventilate the trap.
D. Properly ventilate the trap.
60
60. A sufficient supply of water is best guaranteed if the service:
A. Delivers 100% of the minimum demand of fixtures
B. Delivers approximately 25% of the minimum demand of fixtures.
C. Delivers approximately 100% of the minimum demand of fixtures.
D. Delivers approximately 50% of the minimum demand of fixtures
C. Delivers approximately 100% of the minimum demand of fixtures.
61
61. Which of the following factors should be given greatest consideration in selecting materials for a water distribution system:
A. Chemical content of water and relative action if any on materials.
B. Mechanical knowledge of processes involved in installing various materials.
C. Cost of available materials.
D. Relative frequency of use of materials in the neighborhood.
A. Chemical content of water and relative action if any on materials.
62
```
62. A building 60' in height above the level of the water main has a pressure drop at the top of the building of:
A. 60 lbs.
B. 0 lbs.
C. 10 lbs.
D. 26 lbs.
```
D. 26 lbs.
63
63. Circuit venting of fixtures is used many times mainly because:
A. It never fouls.
B. It is mare economical.
C. It is the only system that guarantees against vent failure.
D. It permits use of short radius fittings.
B. It is mare economical.
64
```
64. Plumbing systems are tested to:
A. Create inspection service.
B. Prove quality of workmanship.
C. Make extra work for plumbers.
D. Insure their being gas and water tight.
```
D. Insure their being gas and water tight.
65
65. Connection to the premises with a pumped supply which exceeds 400 g/p/m (total) must be equipped with either a:
A. Suction tank sized as required by the department of building.
B. Surge tank sized as required by the department of buildings.
C. For premises with a pumped supply greater than 400g/p/m and more than one water service pipe, the pumping capacity shall not be divided among the multiple service pipes for the purpose of determining the need for a suction tank.
D. A, B & C.
D. A, B & C.
66
```
66. An automatic pump with capacity of 600 gallons per minute is drawing water from a suction tank. The minimum capacity of the suction tank is:
A. 6,000 gals.
B. 7,5000 gals.
C. 10,000 gals.
D. 12,000 gals.
```
C. 10,000 gals.
67
```
67. In order to prevent noises in a water supply line in which water is flowing, the maximum water velocity shall not be designed to exceed:
A. 6 ft./sec.
B. 8 ft./sec.
C. 12 ft./sec.
D. 16 ft./sec.
```
B. 8 ft./sec.
68
```
68. When metal tags are used in the identification of potable water supplies, the shape of these tags shall be most nearly:
A. Triangle-4 in, each side.
B. Hexagonal-4 in. each side.
C. Square-3 in. each side.
D. Round-3 in. in diameter.
```
D. Round-3 in. in diameter.
69
```
69. Whenever the water supply becomes contaminated, the system shall be filled with:
A. Citric solution.
B. Water-chlorine solution.
C. Organic solution.
D. Potash solution.
```
B. Water-chlorine solution.
70
80. Which one of the following statements is most nearly correct:
A. When house tanks are supplied from the street pressure' ballcocks are not required.
B. Overflows from house tanks may be connected to the nearest stack vent through the roof.
C. Overflow pipes from roof tanks should be made one commercial size smaller than the supply pipe.
D. The minimum diameter for the emptying pipe for a 5,000 gallon capacity roof tank is 4 inches.
D. The minimum diameter for the emptying pipe for a 5,000 gallon capacity roof tank is 4 inches.
71
```
61. The potable water supply to automatic fire sprinkler and stand pipe systems shall be protected against back flow by a:
A. Air gap.
B. Barometric loop.
C. Spiit-proof vacuum breaker.
D. Double check-valve assembly.
```
D. Double check-valve assembly.
72
72. A vacuum relief valve when located in the cold water piping on top of a closed copper storage tank is to:
A. Prevent overheating the hot water tank.
B. Prevent back-pressure of hot water into the cold water piping.
C. Prevent the collapsing of the storage tank.
D. Relieve the air released by the hot water.
C. Prevent the collapsing of the storage tank.
73
```
73. A curb valve shall be installed on domestic service pipes that are over:
A. 2-inches in diameter.
B. 1-1/2 inches in diameter.
C. 2-1/2 inches in diameter.
D. 3 inches in diameter.
```
A. 2-inches in diameter.
74
```
24. Water service pipe and the building sewer shall be separated by:
A. 5' of undisturbed or compacted earth.
B. 8' of compacted earth.
C. 10' of undisturbed earth.
D. 12' of compacted earth.
```
A. 5' of undisturbed or compacted earth.
75
```
25. The outlet from the gravity tank to the distribution system shall be equipped with a strainer located above the tank bottom at least:
A. 1-inch.
B. 4-inch.
C. 6-inch.
D. 2-inch.
```
D. 2-inch.
76
76. The overflow pipe for a suction water supply tank located on the lowest floor may discharge:
A. Behind a leader trap.
B. Over an open water supplied fixture.
C. Onto an approved splash block for a leader.
D. Into a clear water drain.
B. Over an open water supplied fixture.
77
77. Which of the fallowing statements is not correct:
A. A vacuum breaker and check valve shall be installed between the safety valve and the hot water equipment used.
B. Relief outlets shall not be directly connected to drainage or vent piping.
C. Relief valve discharge pipes shall be the same size as valve discharge connections.
D. Where a relief valve discharge into a plumbing fixture, a minimum air break shall be provided.
A. A vacuum breaker and check valve shall be installed between the safety valve and the hot water equipment used.
78
```
78. All flush tank operated by ballcock shall have an approved vacuum breaker located above the overflow outlet at least
A. 12-inches.
B. 6-inches.
C. 4-inches.
D. 1-inch.
```
D. 1-inch.
79
```
79. All copper lined tanks located and installed so that can be drained by a fixture located below he tank, that will operate up to a maximum water pressure of 200 psi and up to a maximum temperature of 200*F. Shall be equipped with a:
A. Altimeter.
B. Barometer.
C. Vacuum relief valve.
D. Ballcock.
```
C. Vacuum relief valve.
80
```
80. Potable water service pipes shall not be located in, under, or above a cesspool, septic tank drainage fields or seepage pits. the minimum separation shall be at minimum:
A. 20-feet.
B. 15-feet.
C. 12-feet.
D. 10-feet.
```
D. 10-feet.
81
```
81. The intervals of colors marking used in potable and non-potables waterlines shall not exceed:
A. 25-feet.
B. 20-feet.
C. 12-feet.
D. 5-feet.
```
A. 25-feet.
82
```
82. A water pressure booster pump system is to be used as an auxiliary water system. The pump type generally installed to boost the water pressure is:
A. Centrifugal pump.
B. Hydraulic pump.
C. Reciprocating pump.
D. Rotary pump.
```
A. Centrifugal pump.
83
83. According to good practice, in a four story building , the proper start of a hot water circulation line is:
A. Half way between the 3rd and 4th floors.
B. Right below the 4th floor branch connection.
C. Right below the 3rd floor branch connection.
D. Right above the 4th floor branch connection.
D. Right above the 4th floor branch connection.
84
```
84. The one fixture or appliance that may be directly connected to the potable water supply is :
A. Aspirator.
B. Flushing rim slop sink.
C. Embalming .
D. Sterilizer.
```
B. Flushing rim slop sink.
85
```
85. Where required hose outlets shall have a vacuum breaker installed above the highest point on the hose line at a minimum of:
A. 6-inch.
B. 10-inch.
C. '12-inch.
D. 18-inch.
```
A. 6-inch.
86
86. On both hot and cold water supply lines to a garbage can cleaning machine a vacuum breaker shall be installed a minimum of:
A. 6-inch above the flood level of the machine.
B. 8-inches above the flood level of the machine.
C. 12-inch above the flood level of the machine.
D. 1-inch above the flood level of the machine.
A. 6-inch above the flood level of the machine.
87
87. Which of the following statements are true:
A. Curb valves shall be full port valves or non-rising stem gate valves designated for a minimum of 150 psi of working pressure.
B. Curb valves shall be required on all domestic water service pipes larger than two inch in size and on any water service pipe that provides for fire protection. All curb valves shall be set in set in the service pipe in the sidewalk area, and shall be located eighteen inches from the curb or other such locations as may be approved by the department (DEP).
C. All curb boxes shall be provided with a tar coated iron extension box with a cover which is flush with the sidewalk. Each curb valve larger than two inches in diameter shall be equipped with an operating nut at least one quarter (1-1/4) inch square. Curb valves two inches and smaller in diameter may be full port valves equipped with a quarter turn shutoff nut.
D. A, B & C.
D. A, B & C.
88
```
88. Metal tags are to be used for identification of a non-potable water system. The shape of these tags should be:
A. Triangular-4 inch each side.
B. Hexagonal-2 inch each side.
C. Square-3 inch each side.
D. Octagonal-1-1/2 inch each side.
```
A. Triangular-4 inch each side.
89
```
89. The hypochlorite solution that is used for washing the inside surface of a domestic water supply tank usually contains a minimum amount (in parts per million) of available chlorine of approximately:
A. 100 PPM.
B. 150 PPM.
C. 200 PPM.
D. 50 PPM.
```
A. 100 PPM.
90
```
90. The recommended supply flow of water in gallons per minute to a water closet, siphonic, flushometer valve required capacity at the fixture supply outlet is not less than:
A. 3.5.
B. 2.5.
C. 1.5.
D. 1.6.
```
B. 2.5.
91
```
91. The maximum flow rates and consumption for plumbing fixtures:
A. Private lavatory, 2.2 gpm at 60 psi.
B. Shower head, 2.5 gpm at 80 psi.
C. Sink faucet, 2.2 gpm at 60 psi.
D. A,B & C.
```
C. Sink faucet, 2.2 gpm at 60 psi.
92
```
92. One pound per square inch is equal to:
A. 6.895 kPa.
B. .6895 kPa.
C. 68.95 kPa.
D. 689.5 kPa.
```
A. 6.895 kPa.
93
```
93. The minimum size of a fixture supply pipe shall be shown in table 604.5. The fixture supply pipe shall not terminate more than:
A. 24".
B. 18".
C. 12".
D. 6".
```
A. 24".
94
```
94.Where water pressure within a building exceeds 85 psi static, an approved water-pressure reducing valve conforming to ASSE 1003 eith strainer shall be installed to reduce the pressure in the building water distribution piping to:
A. 75 psi.
B. 85 psi.
C. 90 psi.
D. 95 psi.
```
B. 85 psi.
95
95. A mechanically formed tee fittings (used in the water distribution system) shall have mechanically extracted outlets that have a height not less than:
A. One times the thickness of the branch tube wall.
B. Two times the thickness of the branch tube wall.
C. Three times the thickness of the branch tube wall.
D. Four times the thickness of the branch tube wall.
C. Three times the thickness of the branch tube wall.
96
```
96. A low pressure cutoff shall be installed on all booster pumps in a water pressure booster system to prevent creation of a vacuum or negative pressure on the suction side of the pumps when a positive pressure of ... or less occurs on the suction side of the pump:
A. 5 psi.
B. 10 psi.
C. 7 psi.
D. 12 psi.
```
B. 10 psi.
97
97. After a domestic water tank has been cleaned it shall be disinfected.
the tank shall be filled with water to which hypochlorite solution is added during the filling in sufficient quantity so that the treated water in the tank will contain at least:
A. 50 parts per million of available chlorine to remain in the tank for two hours before draining.
B. 40 parts per million of available chlorine to remain in the tank for two hours before draining.
C. 10 parts per million of available chlorine to remain in the tank for two hours before draining.
D. 5 parts per million of available chlorine to remain in the tank for two hours before draining.
C. 10 parts per million of available chlorine to remain in the tank for two hours before draining.
98
98. Where water piping passes through walls and is required to have 8 inch bands, the bands shall be supplied:
A. Within 5 feet of the wall, where the piping passes through a wall.
B. Within 15 feet of the wall, where the piping passes through a floor.
C. Within 25 feet of the wall, where the piping passes through a roof.
D. At each point where the piping passes through a wall, floor or roof.
D. At each point where the piping passes through a wall, floor or roof.
99
```
99. All storage water heaters operating above atmospheric pressure shall be provided with an approved, self-closing (levered) pressure relief valve and temperature relief valve or combination thereof.The relief valve shall conform to ANSI 2.22. The relief valve shall not be used as a means of:
A. Relieving pressure.
B. Relieving temperature .
C. Preventing explosions.
D. Controlling thermal expansion.
```
D. Controlling thermal expansion.
100
```
100. "A single-seated spring-loaded, diaphragm-actuated valve of rugged construction and simplicity of design, with few moving parts. The diaphragm is balanced between a force acting against its area on the underneath side, and by the loading of a compressed adjusting spring against it on the upper side.A drop in the pressure decreases the upward force against the diaphragm, causing the adjusting spring to push the diaphragm down and move a disc to create a wider opening of the seat.":
The above paragraph best describes a:
A. Flushometer valve.
B. Soft-seated check valve.
C. Pressure reducing valve.
D. Relief valve.
```
C. Pressure reducing valve.
101
```
101. Water the t comes in contact with copper pipes, sometimes has a bluish color. The reason most generally for the cost of the color is:
A. Corrosion.k
B. Electrolysis.
C. Pitting.
D. Rust.
```
B. Electrolysis.
102
```
102. To prevent the flow up on a circulation riser when hot water is being used, the valve most likely installed is a:
A. Gate valve.
B. Check valve.
C. Globe valve.
D. Relief valve.
```
B. Check valve.
103
103. In reference to hot water system the one statement is most nearly correct i s that:
A. Circulating lines are of greatest importance where the use of hot water is intermittent.
B. Air chambers are mainly used to properly vent hot water risers.
C. Where hot water lines are not circulated, it is good practice to make the diameter of hot water supply lines larger than usual.
D. Constant circulation of hot water reduces heat losses from bare pipes.
A. Circulating lines are of greatest importance where the use of hot water is intermittent.
104
```
104. The proper type of insulation to use on cold water pipe lines to prevent sweating is:
A. 85% magnesia covering.
B. Moister-resisting asbestos paper.
C. Hair felt covering.
D. Asbestos-sponge felted insolation.
```
C. Hair felt covering.
105
```
105. Roof tanks from which water is furnished for drinking and domestic purposes are required to be emptied and thoroughly cleaned at least a minimum of once every:
A. 5 year.
B. 3 year.
C. 2 year.
D. 1 year.
```
D. 1 year.
106
106. In a down feed type hot and cold water distribution system in a five story apartment house which is supplied directly from adequate service main pressure, the main hot and cold risers should run unreduced in size to the:
A. Fourth story at the celling level and then branch out.
B. Fifth story just below the roof and then branch out.
C. Midway in the fifth story level and then branch out.
D. Fourth story just above the floor level and then branch out.
A. Fourth story at the celling level and then branch out.
107
```
107. A pressure relief valve installed in a water supply system to a hot water storage tank was set at 90 psi. The maximum normal working pressure in the system shall be most nearly:
A. 90 psi.
B. 65 psi.
C. 115 psi.
D. 45 psi.
```
B. 65 psi.
108
```
108. All pipes conveying non-potable water supplies shall be identified by a paint that os color coded using the color:
A. Yellow.
B. Orange.
C. Red.
D. Black.
```
A. Yellow.
109
109. Sizes of connections for fire services shall be subject to the requirements of the department of:
A. Department of Environmental Protection.
B. Fire department.
C. Department of water supply.
D. Department of buildings.
D. Department of buildings.
110
```
110. A flushometer valve for urinal is to operate at the minimum pressure permitted. The street water main fluctuates in pressure between 28 psi and 42 psi. The maximum height above the street main that the urinal may be installed is most nearly:
A. 80 feet.
B. 70 feet.
C. 55 feet.
D. 30 feet.
```
D. 30 feet.
111
```
111. The hypochlorite solution that is used for disinfection the inside surface (washed) of a domestic water supply tank usually contains a minimum available chlorine:
A. 40 parts per million.
B. 60 parts per million.
C. 80 parts per million.
D. 100 parts per million.
```
D. 100 parts per million.
112
```
112. The minimum permitted size of a water tap and minimum size service pipe that can be used is:
A. 5/8 in. tap, 3/4 in. service.
B.. 3/4 in. tap, 1 in. service.
C. 3/4 in. tap, 3/4 in. service.
D. 1 in. tap, 1 in. service.
```
B.. 3/4 in. tap, 1 in. service.
113
```
113. The minimum spacing interval for corporation stops (traps) and wet connections for both three quarter inch and one inch corporation stops (taps) shall be:
A. 12 inches.
B. 18 inches.
C. 24 inches.
D. 30 inches.
```
B. 18 inches.
114
```
114. Clearance shall be provided around a water service pipe passing through a wall for protection, clearances between the outside of the pipe and the wall shall not be less than:
A. 3/8 in.
B. 1/2 in.
C. 3/4 in.
D. 1 in.
```
B. 1/2 in.
115
```
115. Required capacity at fixture supply pipe outlets, minimum pressures as per manuf. recommendation for bathtubs, combination fixture, residential dishwasher, drinking fountain, laundry tray, lavatory, shower, sill cock (hose bib), residential sink, service sink and water closet one piece with tank.
A. 4 psi.
B. 8 psi.
C. 15 psi.
D. 20 psi.
```
B. 8 psi.
116
```
116. An automatic flushometer valve for a siphonic water closet shall not be used on a fixture, (blowout water closers) when the guaranteed pressure is less than:
A. 8 psi.
B. 10 psi.
C. 25 psi.
D. 20 psi.
```
C. 25 psi.
117
```
117. What is the minimum size fixture supply pipe to a flushometer tank water closet, flush tank water closet, lavatory, drinking fountain and bidet:
A. 3/8 in.
B. 1/4 in.
C. 1/8 in.
D. 1/2 in.
```
A. 3/8 in.
118
118. Corporation stops, wet connections, or other connections to a street main shall be made only by employees of the Department of Environmental Protection. The cost of the installation shall be borne by:
A. The owner of the property for which the connection is made.
B. Licensed Master [lumber.
C. Permittee.
D. General contractor.
A. The owner of the property for which the connection is made.
119
119. Which one of the following statement is not correct:
A. Riser valves on one-family dwellings need not be installed.
B. In multistory buildings, a valve shall be installed at the to of each water supply down-feed pipe.
C. Riser valves eliminates the need for branch control valves to any dwelling unit.
D. In a factory individual fixture stop valves eliminates the need for a branch control valves.
C. Riser valves eliminates the need for branch control valves to any dwelling unit.
120
```
120. Overflows for gravity tanks shall be provided with durable screening with openings of more than:
A. 1/2 in.
B. 3/8 in.
C. 1/4 in.
D. 1/8 in.
```
D. 1/8 in.
121
121. Each direct water connection to a refrigerator or air conditioning unit using city water for cooling purposes shall be equipped with a:
A. Check valve set not more than two feet from the unit.
B. Check valve set not more than three feet from the unit.
C. Check valve set not more than four feet from the unit.
D. Check valve set not more than one feet from the unit.
A. Check valve set not more than two feet from the unit.
122
122. A particular plumbing specification calls for the inspection of a double suction single stage centrifugal type water pump. /this type of pump may be described as having:
A. A suction inlet on each side of the single impeller from a common connection and a single discharge connection from the impeller.
B. A suction inlet to one side of each impeller and a combined or common discharge from the impellers.
C. A suction inlet to the impeller which is at least three pipe sizes larger than the discharge.
D. An open impeller with fairly large clearances.
A. A suction inlet on each side of the single impeller from a common connection and a single discharge connection from the impeller.
123
123. Where there is any possibility of back-flow from tanks, siamese connections, or other apparatus or fixtures within the building a check valve shall be placed within:
A. Meter inlet valve and the meter.
B. All down-feed supplies from a tank cross connected in any manner with distribution supply piping in a building supplied by direct street or pump pressure, shall be equipped with a check valve on the main cold water down supply to prevent back-flow of water into the roof tank.
C. Meter and test tee.
D. Within two feet of the meter outlet.
B. All down-feed supplies from a tank cross connected in any manner with distribution supply piping in a building supplied by direct street or pump pressure, shall be equipped with a check valve on the main cold water down supply to prevent back-flow of water into the roof tank.
124
```
124. Connections to city water mains shall comply with the rules of the Department of:
A. Buildings.
B. Housing and development.
C. Fire of N.Y.C.
D. Environmental Protection.
```
D. Environmental Protection.
125
125. Hot water supply system in a tall building is designed for pressure reducing valves.
the best location for these valves is most nearly:
A. On each riser.
B. At the hot water generator.
C. At each fixture.
D. On each branch.
D. On each branch.
126
126. The demand load in a building water supply system shall be based on the following data:
A. The number of fixtures installed, the simultaneous use of these fixtures and the length of pipe needed.
B. The kind of fixtures installed, the simultaneous use of these fixtures and the size of pipes to these fixtures.
C. Peak demand , the capacities at the fixture supply pipe outlets, the minimum flow rate and flow pressure provided to fixtures and appliances.
D. The number of fixtures installed, the size of pipes to these fixtures and the length of pipe needed.
C. Peak demand , the capacities at the fixture supply pipe outlets, the minimum flow rate and flow pressure provided to fixtures and appliances.
127
```
127. Potable water service pipes shall not be located in, under or above cesspools, septic tanks, septic tank drainage fields or seepage pets and shall be separated by a minimum of:
A. 10 feet.
B. 12 feet.
C. 4 feet.
D. 15 feet.
```
A. 10 feet.
128
128. Water main corporation stops (taps) shall be installed in:
A. Wherever it makes common sense, front, side or rear.
B. As directed by the Department of Buildings.
C. In front of the property to be supplied with water.
D. In front or the side of the property to be supplied with water.
C. In front of the property to be supplied with water.
129
```
129. Each new or repaired service pipe be shall be subjected to a pressure test conducted by the Licensed Master Plumber in the presence of a Department inspector. All service pipes and appurtenance shall remain uncovered for the duration of the test for observance of leakage. The test pressure shall be:
A. 25% above the operating pressure.
B. 150 pounds above street pressure.
C. 175 pounds above street pressure.
D. Under street main pressure.
```
D. Under street main pressure.
130
```
130. A water test shall be applied to each new or repaired service pipe. Where the street main pressure is 40 psi., the test pressure applied to the service would be:
A. 50 psi.
B. 190 psi.
C. 215 psi.
D. 40 psi.
```
D. 40 psi.
131
131. All water used in the construction of building s shall be metered the building is higher than:
A. 3 stories or more than 30 feet high.
B. 4 stories or more than 40 feet high.
C. Higher than five stories or 75 feet or more in height.
D. Higher than six stories or more than 75 feet.
C. Higher than five stories or 75 feet or more in height.
132
```
132.All water meters used for billing purposes shall read:
A. In cubic inches per minute,
B. In gallons per minute.
C. In liters per minute.
D. In cubic feet.
```
D. In cubic feet.
133
133. Where flushometers, suction tanks, other fixtures or piping rquipped with quick closing valves and are wupplied by direct street pressure, an approved water hammer arrestor shall be installed in the service pipe:
A. Two ft. downstream of the meter as required by the building code.
B. Three ft. downstream of the meter as required by the building code.
C. Four ft. downstream of the meter as required by the building code.
D. Five ft. downstream of the meter as required by the building code.
A. Two ft. downstream of the meter as required by the building code.
134
```
134. All meter setting shall contain a test tee or valve ... of the meter and before he outlet valve.
A. Downstream.
B. Upstream.
C. Water main side.
D. Street side.
```
A. Downstream.
135
```
135. Where street water main pressures fluctuate, the building water distribution system shall be designed for the:
A. Maximum pressure available.
B. Minimum pressure available.
C. 25% above minimum pressure .
D. 25% above maximum pressure .
```
B. Minimum pressure available.
136
136. The one location where a check valve shall be placed in water services is most nearly when:
A. A meter 3-inch or larger is required.
B. Flushometers are used in commercial buildings.
C. A building is supplied by two different mains.
D. The street main exceed 50 pounds per square inch.
C. A building is supplied by two different mains.
137
137. Location of shutoff valves are not required on the following location:
A. On the fixture supply to each plumbing fixture other than bathtub and showers in one-and two-family residential occupancies.
B. On the water supply pipe to each sill cock.
C. On the water supply pipe to each appliance or mechanical equipment.
D. On the hot water supply exiting the hot water storage tank.
D. On the hot water supply exiting the hot water storage tank.
138
```
138. The minimum flow rate in gallons per minute necessary to properly flushed a flushometer type urinal is:
A. 18 gpm.
B. 20 gpm.
C. 25 gpm.
D. 30 gpm.
```
A. 18 gpm.
139
139. Which of the following statements is not true:
A. Potable water gravity tank covers shall be covered to keep out unauthorized persons, dirt and vermin.
B. The covers of gravity water supply tanks shall be vented with a return bend pipe with an area not less than the area of the down-feed riser pipe.
C. /The vent connected to all water supply tanks shall be screened with a corrosion-resistant screen of not less than 16 by 20 mesh per inch.
D. Each gravity or suction water supply tank shall be provided with an overflow pipe and the outlet shall not discharge within 12 inches of a roof drain, or over an open water supplied fixture.
D. Each gravity or suction water supply tank shall be provided with an overflow pipe and the outlet shall not discharge within 12 inches of a roof drain, or over an open water supplied fixture.
140
140. Each direct water connection to a refrigeration or air conditioning unit using City water for cooling purposes shall be equipped with an approved check valve set not more than two feet from the unit and an approved relief valve installed on the outlet side of the check valve.
The refrigeration system contains 45 pounds of refrigerant and shall be provided with a relief valve. The maximum water pressure at the point of installation to the relief valve is 65 lbs/per sq. inch. Under these conditions this relief valve shall be set at:
A. 75 psi.
B. 70 psi.
C. 65 psi.
D. 60 psi.
B. 70 psi.
141
```
141. Connections to premises with a pumped water supply must be equipped with either a suction or a surge tank when the pumped supply exceeds:
A. 100 g/p/m.
B. 200 g.p.m.
C. 300 g.p.m.
D. 400 g.p.m.
```
D. 400 g.p.m.
142
```
142. All permits for work requiring opening of obstructing a street and/or sidewalk in the installation of a water service shall be obtained from:
A. Department of Buildings.
B. Department of Transportation (DOT).
C. Department of Water Supply.
D. Department Department of Public Work.
```
B. Department of Transportation (DOT).
143
```
143. Building subdrains that cannot be discharged to the sewer by gravity flow shall be discharged into a tightly covered and vented ejector pit/basin from which the liquid shall be lifted by automatic pumping equipment or other approved method into the:
A. Street sewer.
B. Building gravity drainage system.
C. Conductor.
D. Building subdrain.
```
B. Building gravity drainage system.
144
```
144. All covered and vented ejector pit/basins receiving sewage and being pumped into the gravity drainage system shall have a check valve and a full open valve, located on the:
A. Discharge side of the pump.
B. Upstream side of the check valve
C. Pump or ejector suction piping.
D. Pit cover.
```
A. Discharge side of the pump.
145
145. Sewage ejector pits shall be not less than:
A. 12 inches in diameter and 24 inches deep.
B. 18 inches in diameter and 24 inches deep.
C. 24 inches in diameter and 24 inches deep.
D. 30 inches in diameter and 24 inches deep
B. 18 inches in diameter and 24 inches deep.
146
```
146. Bathtub (with or without overhead shower or whirlpool attachments) having a trap size of two inches has a drainage fixture unit value of:
A. 3.
B. 2.
C. 1.
D. 4.
```
B. 2.
147
```
147. Horizontal stack offsets shall be sized as required for:
A. Building drains.
B. Branches.
C. Straight stacks.
D. Offsets.
```
A. Building drains.
148
148. Horizontal offsets of drainage stacks shall be vented:
A. Where 10 or more drainage stacks shall be vented.
B. Where 8 or more drainage stacks shall be vented.
C. Where 5 or more drainage stacks shall be vented.
D. Where 1 or more drainage stacks shall be vented.
C. Where 5 or more drainage stacks shall be vented.
149
149. When venting horizontal offsets of drainage stacks where five or more branch intervals are located above the offset; shall be vented by venting:
A. The upper section of the drainage stack.
B. The lower section of the drainage stack.
C. Using a 3" vent.
D. A & B.
D. A & B.
150
```
150. Where venting horizontal offsets of drainage stacks where five or more branch intervals are located above the offset; the offset shall be vented by venting:
A. Vented as a continuous vent.
B. Vented as a separate stack.
C. Vented as a separate branch.
D. RE-vented to the lower stack.
```
B. Vented as a separate stack.
151
151. All water pressure tanks shall be provided with a ... ... valve at the top of the tank that will operate up to a maximum water pressure of ... and up to a maximum temperature of ... .
A. Vacuum relief, 212 psi. 200*F.
B. Vacuum relief, 200 psi. 200*F.
C. Vacuum relief, 200 psi. 2122*F.
D. Temperature and pressure relief, 200 psi. 200*F.
B. Vacuum relief, 200 psi. 200*F.
152
```
152. When installing a vacuum relief valve on top a water pressure tank the minimum size shall be:
A. 0.25 inch.
B. 0.375 inch.
C. 0.50 inch.
D. 0.625 inch.
```
C. 0.50 inch.
153
153. Every pressure tank in a hydro-pneumatic pressure booster system shall be protected with a:
A. Temperature relief valve.
B. Temperature and pressure relief valve.
C. Pressure relief valve.
D. Vacuum relief valve.
C. Pressure relief valve.
154
```
154. When pressure relirf valves are used on the tank in a hydro-pneumatic pressure booster system the relief valve shall be installed on the:
A. Supply pipe to the tank.
B. On the tank.
C. Before the control valve.
D. A & B.
```
D. A & B.
155
```
155. All relief valves using a hydro-pneumatic pressure booster system shall discharge by gravity to:
A. Safe place of disposal.
B. Basement.
C. Outside air.
D. Sub-drainage.
```
A. Safe place of disposal.
156
156. In non-residential occupancies, hot water or tempered water shall be supplied for bathing and washing purposes. Tempered water shall be delivered for:
A. No-accessible hand-washing facilities.
B. Accessible hand-washing facilities.
C. Culinary purposes.
D. Laundry purposes.
B. Accessible hand-washing facilities.
157
157. Automatic circulating hot water system pumps or heat trace shall be arranged to be conveniently turned off:
A. Automatically when the hot water system is not in operation.
B. Manually, when the hot water system is not in operation.
lC. Automatically or manually, when the hot water system is in operation.
D. Automatically or manually, when the hot water system is not in operation.
D. Automatically or manually, when the hot water system is not in operation.
158
158. Were a thermostatic mixing valve is used in a system with a hot water re-circulaing pump, the hot water or tempered water return line shall be routed to the:
A. Cold water inlet pipe of the water heater.
B. Cold water inlet pipe or the hot water return connection of the thermostatic mixing valve.
C. A & B.
D. Hot water inlet pipe or the hot water return connection of the thermostatic mixing valve.
C. A & B.
159
159. For water service system sizes upto an including 2 inches , because of thermal expansion, the pressure on the downstream side of a pressure on the downstream side of a pressure-reducing valve exceeds the pressure-reducing valve setting a:
A. Device for controlling pressure shall be installed.
B. Check valve must be installed.
C. Gate valve must be installed.
D. Globe valve must be installed.
A. Device for controlling pressure shall be installed.
160
160. Where a back flow prevention device, check valve or other device is installed on a water supply system utilizing storage water heating equipment such that thermal expansion causes an increase in pressure:
A. A device for controlling pressure shall be installed.
B. A check valve must be installed.
C. Gate valve must be installed.
D. Globe valve must be installed.
A. A device for controlling pressure shall be installed.
161
161. Fixture fittings, faucets and diverters shall be installed and adjusted so that the flow of hot water from the fittings corresponds to the:
A. Right or left hand of the fixture fitting.
B. Right-hand side of the fixture fitting.
C. Left-hand side of the fixture fitting.
D. A & B above.
A. Right or left hand of the fixture fitting.
162
162. On shower and tub/shower mixing valves conforming to ASSE 1016, where the flow of hot water corresponds to the :
A. Left-hand side of the fixture.
B. Marking on the device.
C. Fight or left-hand side of the fixture.
D. A & B.
B. Marking on the device.
163
```
163. The water supply for hospital fixtures shall be protected against backflow with a reduced pressure principal backflow preventer, an atmospheric or spill-proof vacuum breaker, or an air gap.Vacuum breakers for bedpan washer hoses shall not be located less than ... above the floor.
A. 2 feet.
B. 3 feet.
C. 5 feet.
D. 6 feet.
```
C. 5 feet.
164
164. Fill in the degree of hazard when installing the device that will prevent the hazard on the right of the number:
1. Air gap-
2. . Air gap fittings for use with plumbing fixtures, appliances and appurtenances-
3. Antisiphon-type fill valves for gravity water closet flush tanks-
4. Barometer loop-
5. Reduced pressure principle back-flow preventer and reduced pressure principle fire protection back-flow preventer-
6. Reduced pressure detector fire protection back-flow prevention assemblies-
7. Double check back-flow prevention and double check fire protection back-flow prevention assembly-
8. Double check detector fire protection back-flow prevention assemblies-
9. Dual-check-valve-type back-flow preventer-
10. Back-flow preventer with intermediate atmospheric-type vents-
11. Back-flow preventer for carbonated beverage machines-
12. Pipe-applied atmospheric type vacuum breaker-
13. Pressure vacuum breaker assembly-
14. Hose-connection vacuum breaker-
15. Vacuum breaker wall hydrants, frost-resistant, automatic draining type-
16. Laboratory faucet back-flow preventer-
17. Hose connection back-flow preventer-
18. Spill-proof vacuum breaker-
1. Air gap-High or low hazard.
2. . Air gap fittings for use with plumbing fixtures, appliances and appurtenances-High or low hazard.
3. Antisiphon-type fill valves for gravity water closet flush tanks-High hazard.
4. Barometer loop-High or low hazard.
5. Reduced pressure principle back-flow preventer and reduced pressure principle fire protection back-flow preventer-High or low hazard.
6. Reduced pressure detector fire protection back-flow prevention assemblies-High or low hazard.
7. Double check back-flow prevention and double check fire protection back-flow prevention assembly-Low hazard.
8. Double check detector fire protection back-flow prevention assemblies-Low hazard.
9. Dual-check-valve-type back-flow preventer-Low hazard.
10. Back-flow preventer with intermediate atmospheric-type vents-Low hazard.
11. Back-flow preventer for carbonated beverage machines-Low hazard.
12. Pipe-applied atmospheric type vacuum breaker-High or low hazard.
13. Pressure vacuum breaker assembly-High or low hazard.
14. Hose-connection vacuum breaker-High or low hazard.
15. Vacuum breaker wall hydrants, frost-resistant, automatic draining type-High or low hazard.
16. Laboratory faucet back-flow preventer-High or low hazard.
17. Hose connection back-flow preventer-High or low hazard.
18. Spill-proof vacuum breaker-High or low hazard.
165
165. The relieving capacity of each pressure relief valve and each temperature relief valve shall:
A. Not be equal or exceed the heat input.
B. Equal or exceed the heat input to the water or storage tank.
C. Not exceed the heat input.
D. Equal and not exceed the input.
B. Equal or exceed the heat input to the water or storage tank.
166
```
166. Vacuum breakers for hose connections in health care or laboratory areas shall not be less than ... above the floor:
A. 6 feet.
B. 5 feet.
C. 4 feet.
D. 3 feet.
```
A. 6 feet.
167
167. Chemicals and other substances that produce either toxic conditions, taste, odor or discoloration in a potable water system:
A. May be introduced into such systems with DOB approvals.
B. Shall not be introduced into such system,
C. Shall not be installed in such systems.
D. B & C.
D. B & C.
168
```
78. Except where approved protective devices are installed cross connections:
A. Shall be permitted.
B. Shall be prohibited.
C. May be installed.
D. A & C are correct.
```
B. Shall be prohibited.
169
169. Cross connections between a private water supply and a potable public supply:
A. Allowed when approved.
B. Shall be prohibited.
C. Approved when an RPZ is installed for protection purposes.
D. A & C.
B. Shall be prohibited.
170
170. Combination stop-and-waste valves or cocks:
A. May be installed in all areas.
B. Shall be installed.
C. Shall not be installed underground.
D. Shall be allowed underground with permission.
C. Shall not be installed underground.
171
```
171. In all buildings where two or more water distribution systems, one potable water and the other non-potable water, are installed, each system shall be identified by:
A. Color markings.
B. Metal tags.
C. Stamping.
D. A & B.
```
D. A & B.
172
172. Pipe identification of potable and non-potable water shall include the contents of the piping system
and an ... indicating the direction of flow. Hazardous piping systems shall also contain ... addressing the nature of the hazard. Pipe identification shall be repeated at maximum intervals of ... ft. and at each point where the piping passes through a wall, floor or roof.,,, shall be readily observable within the room or space the piping is located:
A. Arrow, information, 25, lettering.
B. Arrow, flow, 25, lettering.
C. Mark, information, 25, lettering.
D. Arrow, information, 20, lettering
A. Arrow, information, 25, lettering.
173
```
173. Pipe identification of potable and non-potable water using color of the pipe as identification shall be discernible and consistent throughout:
A. The floor.
B. The building.
C. The room.
D. The cellar.
```
B. The building.
174
```
174. Barometric loops shall precede the point of connection and shall extend vertically to a height of:
A. 10'.
B. 25'.
C. 35".
D. 40'.
```
C. 35"
175
```
175. Fill in the blank spaces:
The size of the background color field and lettering when identifying potable and non-potable water distribution systems shall comply with table 608.8.3:
Sizes of pipe identification.
A. Pipe diameter (inches).
B. Length Background color field (inches).
C. Size of letters (inches).
A. 3/4 to 1-1/4 B. C.
A.1-1/2 to 2 B. C.
A. 2-1/2 to 6. B. C.
A. 8 to 10. B. C.
A. Over 10. B. C.
```
```
A. 3/4 to 1-1/4 B.8. C. 0.5.
A.1-1/2 to 2 B. 8. C. 0.75.
A. 2-1/2 to 6. B.12. C. 1.25.
A. 8 to 10. B. 24. C. 2.5.
A. Over 10. B. 32. C.3.5.
```
176
```
176. Water utilized for the cooling of equipment of other processes shall be returned to the potable water system. Such water shall be discharged into a drainage system through an ... or shall be utilized for non-potable purposes:
A. Air break.
B. Air gap.
C. Direct connection.
D. RPZ.
```
B. Air gap.
177
```
177. Piping that has been utilized for any purpose other than conveying potable water ... be utilized for conveying potable water:
A. May be reused if purified.
B. Shall.
C. Shall not.
D. May.
```
C. Shall not.
178
```
178. The interior surface of a potable water tank shall not be lined, painted or repaired with any material that changes the ... of the water supply when the tank is placed in, or returned to, service:
A.Taste.
B. Color.
C. Odor.
D. A, B & C.
```
D. A, B & C.
179
```
179. Water pumps, filters, softeners,tanks and all other devices that handle or treat potable water shall be protected against:
A. Unlicensed plumbers.
B. Homeowners.
C. Contamination.
D. A, B & C.
```
D. A, B & C.
180
180. The minimum required air gap shall be measured vertically from the lowest end of a potable outlet to the :
A. Flood level rim of the fixture or receptacle.
B. Overflow rim of the fixture or receptacle.
C. Outlet of the fixture or receptacle.
D. Below the flood level rim of the fixture .
A. Flood level rim of the fixture or receptacle.
181
```
181. Back-flow preventers with intermediate atmospheric vents shall conform to ASSE 1012 or CAN/CSAB64.4. These devices shall be permitted to be installed where subject to:
A. Semi-flow conditions.
B. Continuous pressure conditions.
C. Atmospheric conditions.
D. Continuous flow pressure conditions.
```
B. Continuous pressure conditions.
182
182. Barometric loop shall only be utilized as an:
A. Atmospheric type vacuum breaker.
B. Pressure type atmospheric breaker.
C. Pressure reducing type back-flow preventer.
D. A & B.
D. A & B.
183
```
183. Pipe-applied atmospheric-type vacuum breakers and hose connection vacuum breakers, these devices shall operate under normal atmospheric pressure when the critical level is:
A. Checked and labeled.
B. Installed at the required height.
C. above atmospheric pressure.
D. At atmospheric pressure.
```
B. Installed at the required height.
184
```
184. Double check-valve assemblies shall be capable of operating under continuous pressure conditions. These devices shall be tested;
A. Monthly by a licensed plumber.
B. Semi-annual by a licensed plumber.
C. Annually by a certified tester.
D. Every two years.
```
C. Annually by a certified tester.
185
185.
access shall be provided to back-flow preventers as specified by:
A. The approved plans.
B. The department of Buildings.
C. The D.E.P.
D. The installation instructions of the approved manufacturer.
D. The installation instructions of the approved manufacturer.
186
```
186. Openings and outlets equipped for hose connection shall be protected by:
/A. Means other than an air gap.
B. By an air break.
C. By an air gap.
D. By back-flow.
```
A. Means other than an air gap.
187
```
187. Openings and outlets shall be protected by atmospheric-type or pressure-type vacuum breakers. The critical level f the vacuum breaker shall be set a minimum of:
A. 2".
B. 4".
C. 6".
D. 8".
```
C. 6".
188
```
188. Vacuum breakers shall not be installed under exhaust hoods or similar locations that will contain toxic fumes or vapors. Pipe-applied vacuum breakers shall be installed not less than ... above the flood level rim of the fixture, receptor or device served:
A. 6".
B. 4".
C. 2".
D. 1".
```
A. 6".
189
```
189. Approved deck-mounted or equipment-mounted vacuum breakers and faucets with integral atmospheric or spill proof vacuum breakers shall be installed in accordance with the manufacturer's instructions and requirements for labeling with the critical level not less than ... above the flood level rim:
A. 1'.
B. 2".
C. 4".
D. 6".
```
A. 1'.
190
```
190. Sill-cocks, hose bibs, wall hydrants and other openings with a hose connection shall be protected by an atmospheric-type or pressure-type vacuum breaker or a ... attached hose connection vacuum breaker:
A. Potable.
B. Permanently.
C. Fixed-type.
D. Open-type.
```
B. Permanently.
191
```
191. All hospitals shall have:
A. 1 water service.
B. 2 water services.
C. 3 water services.
D. 4 mains.
```
B. 2 water services.
192
192. Water heater and boiler drain valves that are provided with hose connections threads and that are intended only for tank or vessel draining:
A. Must have a required atmospheric -type vacuum breaker.
B. Must have a required pressure-type vacuum breaker.
C. Vacuum breaker is not required.
D. A & B.
C. Vacuum breaker is not required.
193
193. Water supply valves intended for connection of clothes washing machines where back-flow prevention is otherwise provided or is integral with the machine:
A. An additional atmospheric vacuum breaker is required.
B. An additional pressure-type vacuum breaker is required.
C. Vacuum breaker is not required.
D. A & B.
A. An additional atmospheric vacuum breaker is required.
194
```
194. The water supply connection to carbonated beverage dispenses (carbon dioxide) shall be protected against by back-flow by a back-flow preventer conforming to ASSE 1022 or by an:
A. Air gap.
B. Air break.
C. Double check valve.
D. RPZ.
```
A. Air gap.
195
```
195. The potable supply to the boiler shall be equipped with a back-flow preventer with:
A. An air gap.
B. An intermediate atmospheric vent.
C. Double check valve.
D. RPZ.
```
B. An intermediate atmospheric vent.
196
196. The potable water supply to automatic fire sprinkler and standpipe systems shall be protected against back-flow by an:
A. Double check valve assembly.
B. Reduced pressure principal back-flow preventer.
C. Intermediate atmospheric vent.
D. A, B & C.
D. A, B & C.
197
197. Where systems under continuous pressure contain chemical additives or antifreeze. or where systems are connected to a non-potable secondary water supply, the potable water supply shall be protected:
A. Atmospheric type vacuum breaker.
B. Pressure-type vacuum breaker.
C. Reduced pressure principal back-flow preventer.
D. Double check valve.
C. Reduced pressure principal back-flow preventer.
198
```
198. In a health plumbing when a trap is used to collect condensate, a water supply shall be provided for cleaning, flushing and resealing the condensate trap, and the trap shall discharge:
A. Through an air gap.
B. Through an air break.
C. Vacuum breaker.
D.Check valve.
```
A. Through an air gap.
199
```
199. The discharge from a reverse osmosis drinking water treatment unit shall enter the drainage system through an:
A. Air break.
B. Vacuum breaker.
C. Air gap.
D. Air valve.
```
C. Air gap.
200
```
150. New or repaired potable water systems shall be purged of deleterious matter and disinfected prior to utilization. One method , would be:The pipe system shall be flushed with clean, potable water until dirty water does not appear at the points of outlet. The system or part thereof shall be filled with water/ ... solution containing at least ... parts per million of chlorine and the system or part thereof shall be valved off and allowed to stank for ... hoours; or the system or part thereof shall be filled with a water/ chlorine solution containing at least ... parts per million of chlorine and allowed to stand for ... hours following the required standing time, the system shall be flushed with cleaan potable water until the chlorine is purged from the system. The procedure shall be repeated where shown by a bacteriological examination that contamination remains present:
A. Chlorine, 50, 24, 200, 3.
B. Chlorine, 100, 24, 225, 2.
C. Chlorine, 50, 28, 250, 1.
D. Chlorine, 50, 24, 100, 1-1/2.
```
A. Chlorine, 50, 24, 200, 3.
Plumbing
flashcards
Decks in class (23)
# Cards
-
Session 6,171
-
Math2. Two Formula.14
-
OSHA.103
-
OSHA: Commercial Scaffolds.52
-
Union Math Short Cut.29
-
Electrical Safety.65
-
Many Cours master plumber test.25
-
Emanuel Civil Service Cours.147
-
Formulas And Euivalents Troise.32
-
General Plumbing By E. Troise.66
-
Session 3.175
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Session 4.150
-
Session 5.175
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Test 1979.150
-
Session 7.191
-
Session 8.179
-
Session 9.201
-
Session 10.207
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Session 11.250
-
Session 12.218
-
Session 13.150
-
Vocabulary1
-
Building Water Supply.1253
