Session 12. Flashcards by Pablo tivonyuk

A pneumatic sewage ejector system shall have a: (old code)
A. F.A.I. on the inlet side, upstream of the ejector pot.
B. F.A.I. on the outlet side and downstream of the ejector pot.
C. The relief devices of a pneumatic sewage ejector system shall be connected to an independent relief vent at least 2-1/2” in diameter.
D. Such vent shall be carried independently through a roof and shall terminate as required independently through a roof and shall terminate as required as for sanitary vent stack or stack a minimum of one foot above the roof.

A. F.A.I. on the inlet side, upstream of the ejector pot.

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One inch copper tubing installed horizontally shall be supported at intervals no greater than the following:
A. At 5 ft. intervals and behind every hub.
B. At 6 foot intervals.
C. At eight foot intervals.
D. At 10 foot intervals.

B. At 6 foot intervals.

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3. A hot water line needs a hot water return when the furthest fixture exceeds:
A. 15 feet. 
B. 20 feet.
C. 50 feet.
D. 100 feet.

B. 20 feet (new code).

C. 50 feet (old code)/

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4. Galvanized steel pipe can be used on the outside leader line for a maximum of:
A. 5 feet.
B. 10 feet. 
C. 15 feet.
D. 20 feet.

C. 15 feet.

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Waste water that has a Ph value of 7.3: (old code)
A. Acid resistant waste material must be used.
B. Chemical waste drainage piping shall be low expansion, borosilicate glass pipe.
C. Chemical waste drainage piping shall be high silicon cast iron pipe.
D. Cast iron drainage pipe may be used.

D. Cast iron drainage pipe may be used.

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6. Extra strong galvanize wrought iron is schedule:
A. 40
B. 80
C. 160
D. 30.

B. 80.

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7. The color code for recirculation water pipe for an in-ground  pool is: (old code)
A. Green.
B. Gray.
C. Yellow.
D. Light blue.

D. Light blue.

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8. The color code for a potable water pipe for make up water to a swimming pool is:
A. Green.
B. Gray.
C. Yellow.
D. Light blue.

A. Green.

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9. The color code for backwash and wash water pipe is:
A. Green.
B. Gray.
C. Yellow.
D. Light blue.

B. Gray.

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10. The color code for well water pipe is:
A. Yellow.
B. Gray.
C. Green.
D. Red.

D. Red.

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11. The color code for chlorine pipe is:
A. Yellow.
B. Gray.
C. Green.
D. Red.

A. Yellow.

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12. Any structure. basin, chamber or tank containing an artificial body of water for swimming, diving or recreational bathing shall be considered a swimming pool if it has a minimum depth of:
A. 1-ft.
B. 2-ft.
C. 3-ft.
D. 4-ft.

B. 2-ft.

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Plastic drainage, waste and vent piping may be used in building that are:
A. Residential 3 stores or less.
B. Residential 5 stores or less.
C. Commercial building one story in height.
D. Replacement piping in minor alteration in any type of building.

B. Residential 5 stores or less.

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14. Which vent arrangement indicates continuous venting: Figure 29)
A. D.
B. A and D.
C. C and D.
D. B and D.

C. C and D.

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15. Which vent arrangement indicates a revent: Figure 29)
A. A.
B. C. 
C. D.
D. B.

A. A.

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16. Which vent arrangement indicates a back vent: Figure 29)
A. A.
B. C. 
C. D. 
D. B.

D. B.

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17. Which vent arrangement indicates a common vent: (Figure 29)
A. C and D.
B. A and B.
C. B and D.
D. A and B.

A. C and D.

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18. Which type of venting is considered the best type of venting:
A. Circuit venting.
B. Loop venting.
C. Crown venting.
D. Continuous venting.

D. Continuous venting.

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19. What type of venting best describes a vent connection at the junction of two fixture drains and serving as a vent for both fixture traps and drains:
A. Revent.
B. Back vent.
C. Common vent.
D. Circuit vent.

C. Common vent.

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20. What type of venting best describes a vertical vent that is continuation of the drain to which is connects:
A. Loop vent.
B. Circuit vent.
C. Continuous vent.
D. Loop vent.

C. Continuous vent.

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Describe a yoke vent:
A. A group vent extending from in front of the last fixture connection of a horizontal branch to the vent stack.
B. A vent connection at the junction of the two fixture drains and serving as a vent for two fixture traps.
C. A vertical vent that is a continuation of the drain to which it connects.
D. A pipe connecting upward from a soil or waste stack to a vent stack for the purpose of preventing pressure changes in the stack.

D. A pipe connecting upward from a soil or waste stack to a vent stack for the purpose of preventing pressure changes in the stack.

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22. What fixture unit value for a Jacuzzi bath tub:
A. 1
B. 2
C. 3
D. 4.

B. 2.

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23. How many water closets private (1.6 gpf) would  be permitted on a 3 inch horizontal soil branch pipe:
A. 1
B. 2
C. 3
D. 6.

D. 6.

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24. How many water closets flushometer tank, public or private would be permitted on a3 inch horizontal soil branch pipe:
A. 1.
B. 2.
C. 5. 
D. 6.

C. 5.

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``` 25. How many water closet private ( flushing greater than 1.6 gal) would be permitted on a 3 in. horizontal soil branch pipe: A. 1. B. 3. C. 5. D. 6. ```

C. 5.

``` 26. . How many water closet public ( 1.6 gal) would be permitted on a 3 in. horizontal soil branch pipe: A. 2. B. 3. C. 5. D. 6. ```

C. 5.

``` 27. How many water closet public ( flushing greater then 1.6 gal) would be permitted on a 3 in. horizontal soil branch pipe: A. 3. B. 4. C. 5. D. 6. ```

A. 3.

``` 28. How many water closet private ( 1.6 gal) would be permitted on a 3 in.stack where the total discharge into one branch interval is: A. 1. B. 4. C. 5. D. 6. ```

D. 6.

``` 29. How many water closet private ( 1.6 gal) would be permitted on a 3 in. stack where the total for stack of three branch intervals or less is: A. 6. B. 8. C. 10. D. 16. ```

D. 16.

``` 30. How many water closet private ( 1.6 gal) would be permitted on a 3 in. soil stack where the total for stack grater than three branch intervals is: A. 16. B. 24. C. 30. D. 36. ```

B. 24.

``` 31. How many water closets (flush tanks) would be permitted on a 3 in. soil stack: (Old code) A. 1. B. 2. C. 3. D. 4. ```

B. 2.

``` 32. A fitting used as part of the water supply to a shower head or a fitting with a built in hanger is called: A. Common elbow. B. Drop elbow. C. Shower elbow. D. Hanger elbow. ```

B. Drop elbow.

33. Which symbol represent a ht water line on figure 30?

34. Which symbol represents an upright fire sprinkler head on figure 31.

35. Which symbol represents medium steam on figure 32?

``` 36. What would least likely have an effect on a hanger: A. Temperature of the pipe. B. What is in the pipe. C. Type of joint. D. What is the material pipe is made of. ```

C. Type of joint.

``` 37. What is the minimum height that a ball cock supply outlet pipe can be in a roof tank above the overflow pipe: A. 2 inches. B. 4 inches. C. 6 inches. D. 8 inches. ```

B. 4 inches.

``` 38. Each indirect waste pipe from a refrigerator or equipment used for storage of food shall discharge into a receptacle through an air gap and in no instance, shall the indirect waste be trapped ahead of the air gap. The maximum developed length of piping between the outlet and the air gap measured horizontally in total developed length shall be no greater than: A. 8 feet. B. 6 feet. C. 4 feet. D. 2 feet. ```

D. 2 feet.

39. The air gap between the indirect waste pipe and the flood level rim of the waste receptor shall be a minimum of A. 1-in. above the flood level rim of the receiving fixture or receptacle. B. Twice the effective opening of the indirect waste pipe. C. 2 in. above the flood level rim of the receiving fixture. D. 3 in. above the flood level rim of the receiving fixture.

B. Twice the effective opening of the indirect waste pipe.

``` 40. The waste from drinking fountains, bar sinks, soda fountains, and similar fixtures may be connected to a common indirect waste stack or header, provided each fixture connected thereto is: A. Vented. B. Properly trapped. C. Does not need a trap seal. D. The trap seal is a deep seal. ```

B. Properly trapped.

``` 41. Every waste receptor used for indirect waste shall be of an approved type and shall be equipped with: A. A water supply near the outlet. B. Sealed cover accessible. C. A removable strainer or basket. D. A back water valve. ```

C. A removable strainer or basket.

``` 42. Floor drains receiving an indirect waste discharge are considered: A. Indirect waste. B. Soil lines. C. Waste receptors. D. Sinks. ```

C. Waste receptors.

43. A waste receptor receiving an indirect waste discharge may be: A. A hub or a pipe extending not less than 1" above a water discharge may be: A. A hub or a pipe extending not less than 1" above a water-impervious floor, and are not required to have a strainer. B. A hub or pipe extending not less than 2" above the floor without a strainer. C. A hub extending not less than 2" above the floor without a strainer. D. A hub extending not less than 2" above the floor with a strainer.

A. A hub or a pipe extending not less than 1" above a water-impervious floor, and are not required to have a strainer.

``` 44. The plumbing fixture that does not need to meet the water saving performance standards and product labeling requirements is: A. Sinks. B. Lavatory faucets. C. Bath tubs. D. Shower heads. ```

C. Bath tubs.

``` 45. What is the maximum gas pressure in PSI for the use of gas appliances in residential dwellings: A. 1/2 psi. B. 1 psi. C. 1-1/2 psi. D. 3 psi. ```

A. 1/2 psi.

``` 46. A gas supply pressure of 5 inches of mercury shall have a minimum test gage pressure of: A. 3 psi. B. 50 psi. C. 100 psi. D. 90 psi. ```

B. 50 psi. | 5x0.49=2.45 psi.

``` 47. A gas supply pressure of 8 inches of mercury shall have a minimum test gage pressure of: A. 3 psi. B. 50 psi. C. 100 psi. D. 90 psi. ```

C. 100 psi.

``` 48. Two house domestic water pumps each draw 300 gpm, what size is the suction tank: A. 5000 gal. B. 7,500 gal. C. 10,000 gal. D. 12,000 gal. ```

C. 10,000 gal.

``` 49. Power pumps may draw their water supply directly from the street main if the total connected automatic pump capacity is not more than: A. 400 gpm. B. 500 gpm. C. 7,500 gpm. D. 10,000 gpm. ```

A. 400 gpm.

``` 50. The flow pressure is the pressure in the supply pipe, near the faucet or water outlet while the faucet or water outlet: A. Is wide open and not flowing. B. Is closed and not flowing. C. Is wide open and flowing. D. Flowing. ```

C. Is wide open and flowing.

``` 51. At fixtures supplied with hot and cold water the flow rate is for: A. The two connections. B. The hot only. C. Each of the two connections. D. The cold only. ```

C. Each of the two connections.

``` 52. What type of fitting or hanger allows piping to move on an axial direction: A. Pipe saddle. B. Expansion joint. C. Pipe guide. D. Spring hanger. ```

C. Pipe guide.

``` 53. Which is not calculated as office overhead: A. Traveling. B. Warranties. C. Heating cost. D. Paper and pencils. ```

A. Traveling.

54. The potable water supply to lawn irrigtion systems shall be protected against back-flow by an approved vacuum breaker, a valve shall not be: A. Installed downstream from an atmospheric vacuum breaker. B. Installed upstream from an atmospheric vacuum breaker. C. Installed when they are accessible. D. Installed 12 inches upstream from an atmospheric vacuum breaker.

A. Installed downstream from an atmospheric vacuum breaker.

55. House control valves, which shall be made of materials similar to the corresponding service pipes, shall be gate type with the exceptions of those between the sizes of three quarter 93/40 inch and two inches which may be full port valves. The house control valve shall be placed in the service pipe inside the building: A. Within two feet of the building wall. B. More than 2 feet of the building wall. C. Less than 3 feet of the building wall. D. One foot of the building wall

A. Within two feet of the building wall.

``` 56. The house control valve shall be designed at: A. 150 psi minimum working pressure. B. 125. psi minimum working pressure. C. 175 psi minimum working pressure. D..200 psi minimum working pressure. ```

A. 150 psi minimum working pressure.

``` 57. Horizontal C.I. piping shall be securely supported at maximum intervals of: A. 4 feet. B. 5 feet. C. 6 feet. D. 8 feet. ```

B. 5 feet.

``` 58. The maximum horizontal spacing of cast-iron pipe hangers shall be able to be increased where 10-foot lengths of pipe are installed to: A. 5 feet. B. 8 feet. C. 10 feet. D. 12 feet. ```

C. 10 feet.

59. Vertical C.I. piping shall be secured at the base and at: A. Story height no greater than 8 feet. B. Story height no greater than 10 feet. C. Story height no greater than 20 feet. D. Every other story height no greater than 15 feet.

C. Story height no greater than 20 feet.

60. One of the following drainage fittings may not be used on changing direction from the vertical to the horizontal: A. Quarter bend fitting for a 2" or smaller fixture drain. B. Short sweep fitting for a 2" or smaller fixture drain. C. Short sweep fitting for a 3" or larger piping. D. Sanitary tee fitting may be used.

D. Sanitary tee fitting may be used.

``` 61. Short turn tee-wyes may be used: A. Horizontal to vertical. B. Horizontal to horizontal. C. Vertical to horizontal. D. May be used in any direction. ```

A. Horizontal to vertical.

``` 62. No vents will be required for piping serving floor drains when the floor drain is located not more than: A. 15 feet from vented line. B. 10 feet from vented line. C. 4 feet from vented line. D. 2 feet from vented line. ```

A. 15 feet from vented line.

``` 63. A type of venting not permitted: A. Circuit venting. B. Island fixture venting. C. Stack venting. D. Crown venting. ```

D. Crown venting.

64. A wet vent shall be permitted if: A. Its installed in any combination of fixtures within one bathroom group located in the same room. B. It extends from the connection of the dry vent along the direction of flow in the drain pipe to the most downstream fixture drain connection to the horizontal branch drain. C. Only the fixtures within the bathroom groups shall connect to the wet-vented horizontal branch drain. D. A, B & C.

D. A, B & C.

65. The dry vent connection to the wet vent shall be: A. An individual vent. B. A common vent. C. Sized based on the largest required diameter pipe within the wet vent system by the dry system. D. A, B & C.

D. A, B & C.

``` 66. The wet vent shall be a minimum of: A. 1-1/2". B. 2". C. 2-1/2". D. 3". ```

B. 2".

``` 67. A unit or a common vent is also termed a: A. Dual vent. B. Local vent. C. Yoke vent. D. Relief vent. ```

A. Dual vent.

68. The main purpose of the F.A.I. is to A. prevent siphonage of the house trap. B. Prevent back pressure on the house trap. C. Eliminate gases from the drainage system through the fresh air system. D. To balance pressure in the plumbing system.

D. To balance pressure in the plumbing system.

69. Building traps shall be provided with a clean-out and a relief vent or fresh air intake. The fresh air intake pipe shall be carried above grade and shall be terminated in a screened outlet located outside the building and: A. In no case less than the same size as the house drain. B. In no case less than three inches on the inlet side of the house trap. C. In no case less than 1/2 the size of the house drain. D. In no case more than 3" on the inlet side of house trap.

B. In no case less than three inches on the inlet side of the house trap.

70. The house trap shall be installed on the house drain on the sewer side of all connections: A. Without exception. B. Except to receive the storm water drain discharge. C. Except to receive the discharge from oil separators, sewer ejectors, or leaders on combined systems. D. Except that it may receive only leader discharge.

C. Except to receive the discharge from oil separators, sewer ejectors, or leaders on combined systems.

71. Circulating hot water return lines are needed when: A. Over 3 stories, or 50 ft. from the source to the extreme fixture. B. Where the developed length of hot water piping from the source of hot water supply to the farthest fixture exceeds 20 feet. C. Over four stories, or over 20 ft. from the source to the extreme fixture. D. Over two stories, or over 20 ft. from the to the extreme fixture.

B. Where the developed length of hot water piping from the source of hot water supply to the farthest fixture exceeds 20 feet.

``` 72. Drain pipes for emptying tanks up to 5000 gallons shall be at least: A. 2". B. 3". C. 4". D. At least the size of the supply pipe. ```

C. 4".

``` 73. A length of 4" S.H.X.H.C.I. pipe weights: A. 60#. B. 47#. C. 63#. D. 70#. ```

A. 60#.

74. The overflow from gravity or suction water supply tank: A. May connect with a leader. B. Should be trapped and connected to a waste stack. C. May connect with a check valve to a soil or waste stack. D. The overflow outlet shall discharge within 6" of a roof drain, or over an open water supplied fixture.

D. The overflow outlet shall discharge within 6" of a roof drain, or over an open water supplied fixture.

``` 75. Four pound sheet lead has a wall thickness of: A. 1/32". B. 1/8". C. 1/16". D. 1/4". ```

C. 1/16".

``` 76. 5 feet of 1-1/2" lead waste pipe will weigh: A. 10 lbs. B. 15 lbs. C. 20 lbs. D. 25 lbs. ```

B. 15 lbs.

``` 77. Doubling the diameter of a pipe increases its area: A. 1 time. B. 2 times. C. 3 times. D. 4 times. ```

D. 4 times.

78. Where a common acid neutralizing sump for several stacks is used, it shall be located most nearly: A. At the lowest story above the building (house) drain. B. On each floor just before connecting with the stack. C. No more than two stories below the lowest fixture branch. Df. At least two stories above the building (house) drain.

A. At the lowest story above the building (house) drain.

``` 79. The hospital fixture that is most often referred to as a suction apparatus: A. Still. B. Aspirator. C. Clinic sink. D. Autopsy table. ```

B. Aspirator.

``` 80. The largest quantity of gas produced in a septic tank by the decomposition of sewage is: A. Methane. B. Carbon dioxide. C. Carbon monoxide. D. Hydrogen sulfide. ```

A. Methane.

``` 81. The heating value of natural gas is most nearly: A. 540 BTU per cubic foot. B. 800 BTU per cubic foot. C. 1,300 BTU per cubic foot. D. 1,050 BTU per cubic foot. ```

D. 1,050 BTU per cubic foot

82. The waste from an approved and installed sterilizer: A. May, if properly vented, connect directly to a stack. B. Shall not connect directly to any drainage system. C. Shall connect directly to any acid-resistant or cast iron drainage system. D. May, if properly vented, connect directly to any storm drainage system.

B. Shall not connect directly to any drainage system.

``` 83. The minimum size local (vapor) vent to a single bedpan steamer shall be most nearly: A. 2". B. 1-1/2". C. 1-1/4". D. 1 inch. ```

B. 1-1/2".

84. Which one of the following statements is not correct: A. A bedpan washer (hopper) and clinical sink shall have flushing and cleansing characteristics similar to a water closet. B. A service sink (with trap standard) may be used as a clinical sink. C. No ice machine shall be located in a room containing a bedpan washer. D. In mental hospitals, no pipes or traps exposed and all fixtures shall be securely bolted through walls.

B. A service sink (with trap standard) may be used as a clinical sink.

``` 85. Welded joints are permitted on: A. Cast iron soil pipe. B. Brass water pipe. C. Galvanized steel vent pipe. D. Wrought iron waste pipe. ```

B. Brass water pipe.

86. Which one of the following statements is not correct in the installation of septic systems: A. Reinforced concrete covers for septic tank shall be at least 4" thick. B. Septic tank manholes when square shall be at least 20" each side. C. Septic tank manholes are required to be extended to grade level. D. Septic tank manholes when round shall be at least 24" in diameter.

C. Septic tank manholes are required to be extended to grade level.

``` 87. The minimum working pressure for a water service valve shall be: A. 150 psi. B. 125 psi. C. 120 psi. D. 110 psi. ```

A. 150 psi.

``` 88. In order to install the spigot end of a vitrified clay pipe into the bell of a cast iron soil or waste pipe we must first use: A. Increaser. B. Coupling. C. A band. D. Union. ```

A. Increaser.

89. Which on e of the following statement is not correct: A. Grease interceptors shall have a grease retention capacity, in lbs. equal to at least twice the numerical flow-through rating in G.P.M. (i.e., 2 GPM=4 lbs.). B. The minimum flow through raing of grease interceptors shall be equal to the maximum value of all sinks and receptacles that may flow simultaneously through the interceptor divided by the time for the sinks and receptacle to empty. C. Interceptor should remove an average of at least 90% of the grease of other extractable matter in the waste water and be installed in accordance with the manufacturers instruction. D. All prefabricated grease interceptors need not be approved.

D. All prefabricated grease interceptors need not be approved

90. Which one of the following statements is not correct: A. Temperature and pressure relief valves, or combinations thereof, and energy cutoff devices shall bear the label of an approved agency and shall have a temperature setting of not more than 210*F.and a pressure setting not exceeding the tank or water heater manufacturers rated working or 150 psi, whichever is less. B. The relieving capacity of each pressure relief valve and each temperature relief valve shall equal or exceed the heat input to the water heater or storage tank. C. The outlet of a pressure, temperature or other relief valve shall not be directly connected to the drainage system. D. The relief valve shall discharge full size to a safe place of disposal such place as the floor, outside the building and an indirect waste receptor such as a shower stall.

D. The relief valve shall discharge full size to a safe place of disposal such place as the floor, outside the building and an indirect waste receptor such as a shower stall.

91. Where there is a continuous or semi-continuous discharge into the building storm drain or building storm sewer,,as from a pump, ejector, air conditioning plant or similar device, each gallon per minute of such discharge shall be computed as being equivalent to: A. 1 sq. ft. of roof area based on the rainfall rate of 6" per hour. B. 11 sq. ft. of roof area based on the rainfall rate of 5" per hour. C. 19 sq. ft. of roof area based on the rainfall rate of 5" per hour. D. 32 sq. ft. of roof area based on the rainfall rate of 3" per hour.

D. 32 sq. ft. of roof area based on the rainfall rate of 3" per hour.

``` 92. Where a combination potable water heating and space heating systems requires water for space heating at temperatures higher than 140*F, a master thermostatic mixing valve complying with ASSE 1017 shall be provided to limit the water supplied to the potable hot water distribution system to a temperature of: A. 140*F or less. B. 160*F or less. C. 140*F or more. D. 160*F or more. ```

A. 140*F or less.

``` 93. Temperature and pressure relief valves, or combinations thereof, and energy cutoff devices shall bear the label of an approved agency and shall have a temperature setting of not more than 200*F and a pressure not exceeding the tank or water heater manufacturers rated working pressure or: A. 150 psi, whichever is more. B. 150 psi, whichever is less. C. 200 psi, whichever is more. D. 200 psi, whichever is less. ```

B. 150 psi, whichever is less.

94. Gravity flush tanks for water closets and urinals shall include an antisiphon fill valve. Each tank shall have provisions for overflow. The critical level (C/L) mark on the fill valve shall be: A. 4 in. minimum above the overflow in the tank. B. 3 in. minimum above the overflow in the tank. C. 2 in. minimum above the overflow in the tank. D. 1 in. minimum above the overflow in the tank.

D. 1 in. minimum above the overflow in the tank.

95. New or repaired potable water system shall be purged of deleterious matter and disinfected prior to utilization. The method to be followed shall be that prescribed the water purveyor having jurisdiction or: A. Department of buildings. B. Health authority. C. Department of Environmental Protection. D. PC police.

B. Health authority.

96. Immersion type energy cut-off devices shall be installed so that the temperature sensing element is immersed: A. Coldest water zone of the equipment served. B. Hottest water zone of the equipment served. C. Greatest mixture of hot and cold water. D. At the lowest elevation of the water.

B. Hottest water zone of the equipment served.

``` 97. Solid or liquid fuel or gas fired water heaters shall not be installed in: A. Sleeping rooms. B. Bathrooms and toilet rooms. C. Storage closets and surgical rooms. D. A, B & C. ```

D. A, B & C.

98. If no method is prescribed by the department having jurisdiction in the disinfection of Potable water systems, then the following procedures should be used: A. 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 a water/chlorine solution containing at least (50 mg/l) of chlorine, and the system or part thereof shall be valved off and allowed to stand for 24 hour: or the system or part thereof shall be filled with a water/chlorine solution containing at least 200 parts per million of chlorine and allowed to stand for 3 hours. B. Following the required standing time, the system shall be flushed with clean potable water untill the chlorine is purged from the system. C. The procedure shall be repeated where shown by a bacteriological examination that contamination remains present in the system. D. A, B & C.

D. A, B & C.

``` 99. Which one shall be installed with indirect waste: A. Bar sink. B. Soda fountains. C. Refrigerators. D. Drinking fountains. ```

C. Refrigerators.

100. he drains from pressure tanks, boilers, relief valves and similar equipment shall be connected to the drainage system: A. Through an indirect waste. B. Through a properly trapped and vented fixture drain. C. Behind a leader trap. D. Downstream of the building (house) trap.

A. Through an indirect waste.

``` 101. Traps of chemical sinks which receive acid waste shall be most nearly: A. Drum trap with a 3" seal. B. "P" type with 3" seal. C. "S" Trap with 3' seal. D. A & B. ```

D. A & B.

``` 102. No branch venting for acid drainage system is required when the branch is less than 30 feet and fixture units do not exceed: A. 20. B. 15. C. 10. D. 6. ```

C. 10.

``` 103. Where public sewer are deemed available, the method of sewage disposal shall be designed by an architect or engineer, subject to the approval of the commissioner of: A. Health. B. Buildings. C. DEP. D. Housing. ```

C. DEP.

``` 104. A public sanitary or combined sewer shall be demed available to a building if a property line of such building is within ... , measured along a street, alley, or right-of- way, of the public sewer: A. 500 feet. B. 400 feet. C. 300 feet. D. 200 feet. ```

A. 500 feet.

``` 105. Where a battery of not more than three sterilizers discharges to an individual receptor, the distance between the receptor and a sterilizer: A. Shall not exceed 8 feet. B. Shall not exceed 6 feet. C. Shall not exceed 4 feet. D. Shall not exceed 2 feet. ```

A. Shall not exceed 8 feet.

``` 106. The minimum diameter water supply tubing that is connected between the bedpan washer flush supply to the vapor vent stack is: A. 3/8 in. B. 1/2 in. C. 1/4 in. D. 3/4 in. ```

C. 1/4 in

``` 107. The water supply tubing that is connected between the bedpan washer flush supply to the vapor vent shall be trapped to form a water seal and shall be connected to the local vent stack on each floor. The seal shall be a minimum of: A. 1 in. B. 2 in. C. 3 in. D. 4 in. ```

C. 3 in.

``` 108. It shall be required and provided when the backing up of sewage would permit the contamination of surgical equipment: A. Sump pit. B. Vacuum breaker. C. Indirect waste. D. Double check valve. ```

C. Indirect waste.

``` 109. The required air gap between a 2 inch indirect waste pipe and the building drainage system shall be a minimum of: A. 2 inches. B. 4 inches. C. 6 inches. D. 8 inches. ```

B. 4 inches.

``` 110. Stand pipe receptor for automatic clothes washers shall be individually trapped and vented. The maximum distance the receptor shall be above the trap weir is: A. 18 in. B. 30 in. C. 36 in. D. 42 in. ```

D. 42 in.

``` 111. The minimum spacing interval for corporation stops (taps) and wet connections for both 3/4" and 1" shall be: A. 6 in. B. 12 in. C. 18 in. D. 24 in. ```

C. 18 in.

112. Pipping to a blow-off condensing tank shall connect: A. As an indirect waste. B. When below the crown level of the public sewer, may discharge into a dry well. C. Behind a leader trap. D. When trapped, into the building (house) drain.

A. As an indirect waste.

``` 113. The action of an air chamber is caused by: A. Compressed air. B. Vacuum. C. Siphon. D. Helium. ```

A. Compressed air.

``` 114. In a plumbing installation a one inch globe valve is installed backwards. Describe what change will occur in comparison of pressure when water is being used on the fixture side of this valve: A. More pressure. B. Less pressure. C. Pressure remains the same. D. Water cannot pass through the valve. ```

B. Less pressure.

``` 115. The smallest size trap and service permitted by the Department of Environmental Protection (DEP) is: A. 5/8" and 3/4". B. 5/8" and 1". C. 1" and 1". D. 3/4" and 1". ```

D. 3/4" and 1".

116. With respect of hot water storage tank made of galvanized steel compared with those made of copper, it is fact that: A. The former will not corrode as rapidly as the latter. B. Copper tanks tend to collapse when the pressure within or less than 14.7 psi atmospheric pressure. C. The use of copper tanks for hot water usually cause the staining of the clothes and plumbing fixtures. D. For the same wall thickness the later is generally stronger than the former.

B. Copper tanks tend to collapse when the pressure within or less than 14.7 psi atmospheric pressure.

``` 117. Which item is used to clear a natural gas line: A. Nitrogen. B. Argon. C. Hydrogen. D. Oxygen. ```

A. Nitrogen.

``` 118. The melting point for silver brazing should be: A. 410*F. B. 960*F. C. 1000*F. D. 1410*F. ```

D. 1410*F

``` 119. Clean-out openings shall not be utilized for: A. Rodding purposes. B. The installation of new fixtures. C. Access of the piping served. D. Any purpose. ```

B. The installation of new fixtures.

``` 120. Clean-outs shall be the same nominal size as the pipe they serve up to: A. 2". B. 3". C. 4". D. 6". ```

C. 4".

``` 121. The minimum size clean-outs for pipe larger than 4 inches shall be: A. 4". B. 5". C. 6". D. 8". ```

A. 4".

122. "P" trap connections with slip joints or ground joint connections, or stack clean-outs that are not more than one pipe diameter: A. Larger than the drain served, shall be permitted. B. Smaller than the drain served, shall be permitted. C. A & B. D. Will not permitted.

B. Smaller than the drain served, shall be permitted.

``` 123. Clean-outs on 6-inch and smaller pipes shall be provided with a clearance of not less than ... for rodding: A. 12". B. 18". C. 24". D. 30". ```

B. 18".

``` 124. Clean-outs on 8" and larger pipes shall be provided with a clearance of not less than ... for rodding: A. 12". B. 24". C. 36". D. 48". ```

C. 36".

``` 125. All clean-outs shall be: A. Accessible. B. Be seen. C. Be covered over. D. Need access only when sizing soil or waste pipe. ```

A. Accessible.

126. Drainage fixture unit values as designated, give the relative load weight of different kinds of fixtures that shall be employed in: A. Designing the flow of water. B. Estimating the total load carried by a soil or waste pipe. C. Estimating the total load carried by a soil or waste pipe for which the permissible load is given in terms of fixture units. .D. Needed only when sizing soil or waste pipe.

C. Estimating the total load carried by a soil or waste pipe for which the permissible load is given in terms of fixture units.

``` 127. The drainage fixture unit value as a load factor for an automatic clothes washers, commercial: A. 1. B. 2. C. 3. D. 4. ```

C. 3.

``` 128. The drainage fixture unit value as a load factor for an automatic clothes washers, residential: A. 1. B. 2. C. 3. D. 4. ```

B. 2.

``` 129. The drainage fixture unit value as a load factor for a bathroom group (1.6 GPM water closet): A. 2. B. 4. C. 5. D. 6. ```

C. 5.

``` 130. The drainage fixture unit value as a load factor for a bathroom group (water closet flushing greater than 1.6 GPM): A. 2. B. 4. C. 5. D. 6. ```

D. 6.

``` 131. The drainage fixture unit value as a load factor for a bathtub (with or without overhead shower or whirlpool attachments: A. 1. B. 2. C. 3. D. 4. ```

B. 2.

``` 132. The drainage fixture unit value as a load factor for a drinking fountain: A. 1/2. B. 1. C. 1-1/2. D. 2. ```

A. 1/2.

``` 133. Minimum size of a trap (inches) for a bidet is: A. 2. B. 1-1/2. C. 1-1/4. D. 1. ```

C. 1-1/4.

``` 134. Minimum size of a trap (inches) for a dental lavatory is: A. 2. B. 1-1/2. C. 1-1/4. D. 1. ```

C. 1-1/4.

``` 135. Minimum size of a trap (inches) for a dental unit or cuspidor is: A. 2. B. 1-1/2. C. 1-1/4. D. 1. ```

C. 1-1/4.

``` 136. Minimum size of a trap (inches) for a drinking fountain is: A. 2. B. 1-1/2. C. 1-1/4. D. 1. ```

C. 1-1/4.

``` 137. Minimum size of a trap (inches) for a lavatory is: A. 2. B. 1-1/2. C. 1-1//4. D. 1. ```

C. 1-1/4.

``` 138. Minimum size of a trap (inches) for a combination sink and tray is: A. 2. B. 1-1/2. C. 1-1//4. D. 1. ```

A. 2.

``` 139. Minimum size of a trap (inches) for floor drain is: A. 1-1/2". B. 2". C. 3". D. 4". ```

fC. 3".

``` 140. Minimum size of a trap (inches) for a kitchen sink, domestic is: A. 1-1/2". B. 2". C. 3". D. 4". ```

B. 2".

``` 141. Minimum size of a trap (inches) for a shower is: A. 1/14". B. 1-1/2". C. 2". D. 2-1/2". ```

C. 2".

``` 142. The drainage fixture unit value of a load factor for a water closet, private (1.6 GPM): A. 3. B. 4. C. 5. D. 6. ```

A. 3.

``` 143. The drainage fixture unit value of a load factor for a water closet, flushometer tank, public pr private is: A. 3. B. 4. C. 5. D. 6. ```

B. 4.

144. A shower head over a bathtub or whirlpool bathtub attachment: A. Does not increase drainage fixture unit value. B. Does increase drainage fixture unit value. C. Increase drainage fixture unit value.when installed in commercial buildings. D. Reduces drainage fixture unit value.when installed in nursing homes for children.

A. Does not increase drainage fixture unit value.

``` 145. Trap size shall be consistent with the: A. Fixture inlet size. B. Size of the fixture. C. Fixture outlet size. D. Drainage fixture unit of the fixture. ```

C. Fixture outlet size.

146. For fixture added to a dwelling unit bathroom group: A. The DFU remains the same. B. Add the drainage fixture unit value of those additional fixtures to the bathroom group fixture count. C. Add only one DFU value for each fixture added to the group. D. Add only drainage fixture unit value to the group regardless how many fixtures have been added.

B. Add the drainage fixture unit value of those additional fixtures to the bathroom group fixture count.

147. The drainage fixture unit load of an indirect waste receptor receiving the discharge of indirectly connected fixtures shall be: A. Sum of the drainage fixture unit values of the fixtures that discharge to the receptor. B. But not less than the drainage fixture unit value given for the indirect waste receptor. C. A & B. D. The fixture unit values of the fixture receiving the load.

C. A & B.

148. Fixtures not listed in table 709.1 shall have a drainage fixture unit load based on the outlet size of the fixture in accordance with table 709.2. The minimum trap size for unlisted fixtures shall be the size of the drainage outlet but not less than .25 inches, 1-1/4 inches. Fill in the DFU value: Table 709.2 Drainage fixture units for fixture drainage or traps. Fixture drain or trap size (inches) - drainage fixture unit value. 1-1/4 - 1-1/2 - 2 - 2-1/2 - 3 - 4 -

``` 1-1/4 - 1, 1-1/2 - 2, 2 - 3, 2-1/2 - 4, 3 - 5, 4 - 6. ```

``` 149. Drainage fixture unit values for continuous and semi-continuous flow into a drainage system shall be computed on the bases that 1 GPM of flow is equivalent to: A. One fixture unit. B. One and one-half fixture unit. C. Two fixture unit. D. Three fixture unit ```

C. Two fixture unit.

``` 150. Horizontal stack offsets shall be sized as required for: A. Soil or waste stacks. B. Horizontal drains. C. Building drains. D. Vertical stacks. ```

C. Building drains.

``` 151. Vertical stack offsets shall be as required for: A. House drains. B. Horizontal lines. C. Branch lines. D. Straight stacks. ```

D. Straight stacks.

``` 152. What is the minimum size of any building drain serving a water closet: A. 2". B. 2-1/2". C. 3". D. 4". ```

C. 3".

``` 153. //stack shall be sized based on the total accumulated connected load at each story or: A. Branch inlet. B. Branch outlet. C. Branch interval. D. Story height. ```

C. Branch interval.

154.When sizing soil or waste stacks and as the total accumulated connected load decreases stacks: A. Are permitted to the reduced in size. B. Are not permitted to the reduced in size. C. Must maintain one size unrestricted. D. Must increase in size one diameter.

A. Are permitted to the reduced in size.

155. Stack diameters shall not be reduced to: A. More than one-half diameter. B. Less than one-half of the diameter of the largest stack size required. C. More than twice the diameter. D. Any size.

B. Less than one-half of the diameter of the largest stack size required.

``` 156. Sizing load of soil or waste stacks are based on: A. Design criteria. B. Architecture. C. Engineers. D. Plumbing inspector. ```

A. Design criteria.

157. If a horizontal branch connects to the stack within two feet above or below a vertical stack offset, and the offset is located more than four branch intervals below the top of the stack, the offset shall be vented in accordance with Section PC 915 the: A. The offset shall be vented by venting the upper section of drainage stack and the lower section of the drainage stack. B. The upper section of the drainage stack shall be vented as a separate stack with a vent stack connection installed in accordance with section 903.4. The offset shall be considered the base of the stack. C. The lower section of the drainage stack shall be vented by a yoke vent connection between the offset and the next lower horizontal branch. The Yoke vent connection shall be permitted to be a vertical extension of the drainage stack. The size of the yoke vent and connection shall be a minimum of the size required for the vent stack of the drainage stack. D. A, B & C.

D. A, B & C.

158. Vents for vertical offsets required by section 711.1 "horizontal branch connections above or below vertical stack offsets", shall not be required where the stack and its offset are sized as a: A. Branch drain. B. Building drain Table 710.1 (10, column 5, 1/2" per foot. C. House sewer. D. Building sewer.

B. Building drain Table 710.1 (10, column 5, 1/2" per foot.

``` 159. Where a horizontal stack offset is located more than four branch intervals below the top of the stack, a horizontal branch shall not connect within the horizontal stack offset or within ... above or below such offset: A. 12". B. 18". C. 2'. D. 2.5'. ```

C. 2'.

160. A stack with a horizontal offset located more than four branch intervals below the top of the stack shall be vented in accordance with section PC 915 and sized as follows: A. The portion of the stack above the offset shall be sized as for a vertical stack based on the total number of drainage fixture units above the offset. B. The offset shall be sized in accordance with section 710.1.1. C. The portion of the stack below the offset shall be sized as for the offset or based on the total number of drainage fixture units on the entire stack, whichever is larger (see table 710.1920, Column 4), total for stack greater than three branch intervals. D. A, B & C.

D. A, B & C.

161. Vents for horizontal stack offsets required by section 711.3 shall not be required where the stack and its offset are: A. One pipe size larger than required for a building drain (see table 710.1 (1), column 5). B. The entire stack and offset are not less in cross-section area than that required for a straight stack plus the area of an offset vent as provided for in section PC 915. C. Omission of offset vents in accordance with this section shall not constitute approval of horizontal branch connections within the offset or within 2 feet above or below the offset. D. A, B & C.

D. A, B & C.

162. Where a vertical offset occurs in a soil or waste stack below the lowest horizontal branch, change in diameter of the stack because of the offset shall: A. Be required. B. Not be required. C. Required if the jurisdiction is in Manhattan. D. Required of one pipe size greater is used.

B. Not be required.

``` 163. Omission of offset vents in accordance with this section 711.3.1 shall not constitute approval of horizontal branch connections within the offset or within ... above or below the offset: A. 2'. B. 30". C. 36". D. 42". ```

A. 2'.

164. Building sub-drains that cannot be discharged to the sewer by gravity flow shall be discharged into a/n: A. Open covered pit/basin from which the liquid can be lifted and discharged into the building gravity drainage system. B. Open covered pit/basin and vented ejector pit/basin from which the liquid can be lifted and discharged into the building gravity drainage system. C. Tightly covered and vented ejector pit/basin from which the liquid shall be lifted and discharged into the building gravity drainage system by automatic pumping equipment or other approved method. D. None of the above.

C. Tightly covered and vented ejector pit/basin from which the liquid shall be lifted and discharged into the building gravity drainage system by automatic pumping equipment or other approved method.

``` 165. Unless otherwise approved the ejector pits shall be not less than ... in diameter and 4 inches deep: A. 6". B. 12". C. 18". D. 24". ```

C. 18".

166. A check valve and full open valve, located on the discharge side of the check valve, shall be installed in the pump or ejector discharge piping between the pump or ejector and the gravity drainage system: A. Access shall be provided to such valves. B. Such valves will be located above the sump cover required by Sec. 712.1. C. Where the discharge pipe from the ejector is below grade, the valve shall be accessibly located outside the sump below grade in an access pit with a removable access cover. D. A, B & C.

D. A, B & C.

``` 167. The ejector pit shall be accessible and located such that all drainage flows into the pit by gravity. The ejector pit shall be constructed of tile, concrete steel, plastic or other approved materials.The pit bottom shall be solid and provide permanent support for the pump. The ejector pit shall be fitted with a gas-tight removable cover adequate to support anticipated loads in the area of use.The ejector pit shall be: A. Vented. B. Painted. C. Laid in poured concrete. D. Laid in sand. ```

A. Vented.

``` 168. The ejector pit maximum effluent level, the effluent level control shall be adjusted and maintained to at all times prevent the effluent from rising to within ... of the invert of the gravity drain inlet into the sump: A. One inch. B. Two inches. C. Three inches. D. Four inches. ```

B. Two inches.

``` 169. A nipple and cap placed in low point in a system of piping to collect condensate and from which condensate is removable: A. Cap. B. Plug. C. Drip. D. Pipe. ```

C. Drip.

``` 170. A gas having a moisture and hydrocarbon dew point below any normal temperature to which the gas piping is exposed: A. Wet gas. B. Dry gas. C. Liquid gas. D. No-liquid gas. ```

B. Dry gas.

``` 171. A valve of the plug and barrel type designed for use with gas, and equipped with a lever handle for manual operation and a dial to indicate the percentage of opening: A. Non-rising gate valve. B. Globe valve. C. Firing valve. D. Butterfly valve. ```

C. Firing valve.

``` 172. A device that will automatically shut off the fuel supply to a main burner or group of burners when the means of ignition of such burners becomes inoperative, and when flame failure occurs on the burner or group of burners: A. Gas valve at the meter. B. The gas supply distribution valve. C. Flame safeguard device. D. Manual control gas valves. ```

C. Flame safeguard device.

``` 173. A passage way which a chimney or vent through which gaseous combustion products pass: A. Chimney pipe. B. Flue. C. Pipe liner. D. Passageway. ```

B. Flue.

``` 174. A natural gas, manufactured gas, liquefied petroleum gas, hydrogen gas and mixtures of theses gases are: A. Fuel gas. B. Non-combustible gas. C. Liquids. D. Non-useful gases. ```

A. Fuel gas.

``` 175. A completely self-contained heating unit that is designed to supply heated air to spaces remote from or adjacent to the appliance location: A. Radiator. B. Baseboard heat. C. Furnace. D. Radiant heat. ```

C. Furnace.

``` 176. An installation of pipe, valves or fittings installed on a premises o in a building and utilized to convey fuel gas: A. Gas fuel. B. Chimney. C. Duct piping. D. Gas piping. ```

D. Gas piping.

``` 177. A joint made by bolting together a pair of flanged ends: A. Threaded joint. B. Soldered joint. C. Brazed joint. D. Flanged joint. ```

D. Flanged joint.

``` 178. A metal-to -metal compression joint in which a conical spread is made on the end of a tube that is compressed by a flare nut against a mating flare: A. Flanged joint. B. Soldered joint. C. Flared joint. D. Compression joint. ```

C. Flared joint.

``` 179. A general form of gas-tight joints obtained by the joining of metal parts through a positive-holding mechanical construction and is not: A. Flanged joint. B. Threaded joint. C. Flared or compression joint. D. Soldered or brazed joint. ```

D. Soldered or brazed joint.

``` 180. A joint made in thermoset plastic piping by the use of an adhesive substance which forms a continuous bond between the mating surfaces without dissolving either one of them: A. Plastic adhesive joint. B. Welded joint. C. Mechanical joint. D. Flanged joint. ```

A. Plastic adhesive joint.

``` 181. The individual outlets to gas ranges shall not be less than: A. 0.50 inches NTP. B. 1.00 inches NTP. C. 0.75 inches NTP. D. 1.25 inches NTP. ```

C. 0.75 inches NTP.

182. Gas piping shall be sized in accordance with: A. Pipe sizing tables, manufacturer's installation instructions. B. Pipe size equations. C. Other approved engineering methods. D. A, B & C.

D. A, B & C.

``` 183. No gas distribution piping containing gas shall be run within a building in excess of: A. 1/2 psig. B. 3/4 psig. C. 1 psig. D. 2 psig. ```

A. 1/2 psig.

``` 184. Underground piping systems shall be installed in minimum depth of: A. 6". B. 12". C. 18". D. 24". ```

D. 24".

``` 185. Gas pressure not exceeding ... psig, is permitted for the following uses: (a) commercial (b) industrial (c) other large volume use in which fuel requirements for boiler room equipment exceed ... cubic feet fuel per hour and such large volume use is supplied through separate gas distribution piping to the boiler room: A. 1/2 psig, 1000. B. 3/4 psig, 2000. C. 1 psig, 3000. D. 3 psig, 4000. ```

D. 3 psig, 4000.

``` 186. Threaded pipe may be used at a pressure no greater than 1/2 psig and up to: A. 2". B. 3". C. 4". D. 5". ```

C. 4".

187. All gas piping 4 inches and greater operating at pressure exceeding 3 psi must be: A. Butt welded, subject to special inspection and radiographed. B. Butt welded but not subject to special inspection. C. May be brazed. D. May be threaded.

A. Butt welded, subject to special inspection and radiographed.

188. Piping installed underground beneath buildings is prohibited except where the piping is encased in a conduit: A. Of wrought iron or steel pipe designed to withstand superimposed loads. B. And shall extend into an occupiable portion of the building and, at the point where the conduit terminates in the building. C. And the space between the conduit and the gas piping shall be sealed to prevent the possible entrance of any gas leak. The conduit shall be designed for the same pressure as the pipe. D. A, B & C.

D. A, B & C.

``` 189. Gas outlets that do not connect to appliances shall be: A. Valved off. B. Capped gas tight. C. Not allowed. D. Connected to the appliance. ```

B. Capped gas tight.

200. When installing piping underground beneath buildings, the conduit that encases the gas pipe shall be designed to extend: A. Not less than 4" outside the building and shall be vented. B. The vent terminal shall be outdoors, minimum 18" above grade, not under an opening to building or overhang, and shall be installed as to prevent the entrants of water and insects. C. T'he conduit shall be prevented from corrosion. D. A, B & C.

D. A, B & C.

``` 201. The unthreaded portion of piping outlets shall not extend less than ... through finished ceilings and walls and where extending through floors or outdoor patios and slabs, shall not be less than ... above them. The outlet fitting or piping shall be securely supported. Outlets shall be located in or space where the appliance is installed: A. 1/2". 1". B. 3/4", 1-1/4". C. 1", 2". D. 1-1/2", 2". ```

C. 1", 2".

202. All welded gas distribution and meter piping main and branch supplies to customer equipment operating in excess of 3 psig inside buildings shall be butt welded and: A. Shall be controlled inspected. B. Shall be tested and inspected by a department by a department of buildings inspector. C. Shall be subject to special inspection in accordance with chapter 17 of the N..Y.C. building code. D. None of the above.

C. Shall be subject to special inspection in accordance with chapter 17 of the N..Y.C. building code.

``` 203. Radiography shall be performed on all butt welds in gas meter and distribution piping operating at pressure exceeding: A. 1/2 psig within building. B. 2 psig within building. C. 3 psig within building. D. 4 psig within building. ```

C. 3 psig within building.

204. In the event repairs or additions are made after the pressure test: A. The affected piping shall be tested. B. No additional testing is required. C. All the piping shall be retested. D. All the piping does not have to be tested.

A. The affected piping shall be tested.

``` 205. Where new branches are installed in a gas piping system from the point of delivery to new appliances, only a newly installed branches shall be required to be pressure tested, Connection between new piping and existing piping shall be tested with: A. A non-corrosive leak-detecting fluid. B. A flammable fluid. C. An approved leak-detecting method. D. A & C. ```

D. A & C.

``` 206. A piping system shall be permitted to be tested as a complete unit or in section. Under no circumstances shall a valve in a line to be used as a bulkhead between gas on one section of the piping system and test medium in series with a valved ... located between these valves: A. Telltale. B. Valve. C. Tee. D. Pipe. ```

A. Telltale.

``` 207. The test medium shall not be: A. Air or inert gas. B. Nitrogen. C. Carbon dioxide. D. Oxygen. ```

D. Oxygen.

``` 208. Fresh water may be used as the test medium only where the required test pressure: A. Exceeds 50 psig. B. Exceeds 100 psig. C. Less than 100 psig. D. Exceeds 75 psig. ```

B. Exceeds 100 psig.

``` 209. Equipment that is not to be included in the test shall be either disconnected from the piping or isolated by: A. Blanks. B. Blind flanges. C. Caps. D. A, B & C. ```

D. A, B & C.

``` 210. Distribution pressure up to 1/2 psig. The completed piping is to be tested with a non-mercury gauge at a pressure of 3 psig for a minimum of: A. 10 minutes. B. 15 minutes. C. 30 minutes. D. 60 minutes. ```

C. 30 minutes.

``` 211. Distribution pressure of 1/2 psig through 3 psig. The completed piping is to be tested at 50 psig for a minimum of: A. 15 minutes. B. 30 minutes. C. 45 minutes. D. 80 minutes. ```

B. 30 minutes.

``` 212. Distribution pressure over 3 psig through 15 psig. The completed piping is to be tested at 100 psig for a minimum of: A. 15 minutes. B. 30 minutes. C. 45 minutes. D. 60 minutes. ```

D. 60 minutes.

``` 213. Distribution pressure above 15 psig. The completed piping is to be tested to twice the maximum allowable operating pressurte, but no less than 100 psig for a minimum of: A. 15 minutes. B. 30 minutes. C. 45 minutes. D. 60 minutes. ```

D. 60 minutes.

``` 214. Where the test pressure exceeds125 psig, the test pressure shall not exceed a value that produces a hoop stress in the piping greater than a percent of the specified minimum yield strength of the pipe, that percentage shall not be greater than: A. 25%. B. 50%. C. 75%. D. 90%. ```

B. 50%.

``` 215. Meter piping shall be pressure tested in accordance with the requirements of the: A. Serving utility. B. Building department. C. Licensed plumber. D. D.E.P. ```

A. Serving utility.

``` 216. Notwithstanding all the rules and regulations of gas piping test, all factory applied coated and wrapped pipe shall be pressure tested at a minimum of: A. 50 psig. B. 75 psig. C. 90 psig. D. 100 psig. ```

C. 90 psig.

``` 217. Fresh water may be used as a test medium only where the required test pressure exceeds: A. 100 psig. B. 125 psig. C. 150 psig. D. 200 psig. ```

A. 100 psig.

``` 218. The holder of the plumbing permit shall give prior written notice to the commissioner that the plumbing work covered by the permit is ready for inspections and tests in at least: A. 1 days. B. 2 days. C. 3 days. D. 4 days. ```

B. 2 days.

219. Gas piping shall be supported with: A. Pipe hooks or brackets. B. Bands of adequate strength and quality. C. Metal pipe straps, or hangers suitable for the size pipe. D. A, B & C.

D. A, B & C.

220. Gas pipe hangers shall be located at intervals so as to prevent: A. Requirements of MMS SP 5B. B. The free expansion and contraction of the piping between anchors. C. All parts of the supporting equipment shall be designed and installed so they will not be disengaged by movement of the supported piping. D. Undue strains on connected equipment and shall be supported by other piping.

C. All parts of the supporting equipment shall be designed and installed so they will not be disengaged by movement of the supported piping. D. Undue strains on connected equipment and shall be supported by other piping.

``` 231. Piping for other than dry gas conditions shall be sloped not less than: A. 1/4 inch in 15 feet. B. 1/2 inch in 20 feet. C. 3/4 inch in 25 feet. D. 1 inch in 30 feet. ```

A. 1/4 inch in 15 feet.

``` 232. The spacing of supports for steel pipe in gas piping installations, in a horizontal position using nominal pipe size of 1/2 inch and not exceeding: A. 6 feet. B. 8 feet. C. 7 feet. D. 10 feet. ```

A. 6 feet.

``` 233. The of supports for steel pipe in gas piping installations, in a horizontal position using nominal pipe size of 3/4 inch or 1 inch and not exceeding: A. 6 feet. B. 8 feet. C. 7 feet. D. 10 feet. ```

B. 8 feet.

``` 234. Th spacing of supports for steel pipe in gas pipe installation, in a horizontal position using nominal pipe size of -1/4 inch of larger and not exceeding: A. 6 feet. B. 7 feet. C. 10 feet. D. 12 feet. ```

C. 10 feet.

``` 235. The vertical pipe supports for steel pipe in gas piping installations using nominal pipe size of 1-1/4 inches or larger shall be every: A. 5 feet. B. 8 feet. C. 10 feet. D. Every floor level. ```

D. Every floor level.

236. Detecting methods for leakage shall be located by means of an approved: A. Gas detector. B. Non-corrosive leak detection fluid. C. Matches, candles, open flames, or other methods that could provide a source of ignition shall be used. D. A & B.

D. A & B.

``` 237. Rigid metallic pipe and fitting shall only be used within dwelling units when connecting: A. Space heaters. B. Water heaters. C. Appliances. D. A & B. ```

D. A & B.

``` 238. Appliance fuel connector shall have an overall length not to exceed ... except for range and domestic clothes dryer connectors, which shall not exceed ... in length: A. 3 feet, 6 feet. B. 2 feet, 5 feet. C. 18 inches, 4 feet. D. 12 inches, 3 feet. ```

A. 3 feet, 6 feet.

Session 12. Flashcards

(218 cards)