Questions and Answers

1. Burred ends of all pipe and tubing shall be ___.

A. Painted to reduce friction
B. Reamed to the full bore of the pipe of tube
C. Avoided by use of special cutting tools
D. Confined to exposed and readily accesible locations
2. The diameter of waste and overflow for a bathtub shall not be less tahn ___
A. 1-1/4 inches OD
B. 1-3/8 inches OD
C. 1-1/2 inches OD
D. 1-1/4 inches OD
3. Manually controlled flushometer valves shall be used to flush more than
A. One urinal
B. two urinals
C. three urinals
D. four urinals
4. Automatically controlled flushometer valves may be substituted for ___
A. Flush tanks
B. Flow control
C. Gate valves
D. Lever valves
5. Screws or bolts for securing floor_mounted fixtures shall be ___.
A. Brass
B. Aluminum
C. Galvanized steel
D. Die-cast zinc
6. When brazing, the alloys shall have a melting temperature of at least __ degrees F.
A. 800
B. 840
C. 1000
D. 1200
7. Fixture connections between drainage pipes and water closets shall be made
with__-
A. Expansion joints
B. Unions
C. Flanges
D. Hot poured compound
8. The organization, office, or individual responsible for enforcing the requirements of
a code or standard is the ___ *
A. Authority Having Jurisdiction
B. Plumbing inspector or department
C. Building department
D. Administrative authority
9. The joint of a wall-hung lavatory, where it is in contact with the wall, shall be ___
A. Smooth
B. Painted
C. Concealed
D. Watertight
10. With two noted exceptions, all shower compartments and receptors shall be
capable of encompassing a ___ diameter circle.
A. 24-inch
B. 33-inch
C. 30-inch
D. 36-inch
11. All pipe, pipe fittings, tyraps, fixtures, materials, and devices used in plumbing
system shall be ___
A. Listed or labaled by a listing agency
B. Approved by the Authority Having Jurisdiction
C. Free from defects
D. All of the above
12. Sleeves shall be provided to protect all piping through ___ and ___ walls.
A. Floors, concrete
B. Wood, concrete
C. Concrete, masonry
D. None of the above
13. Tanks flushing more than one urinal shall be ___
A. *automatic in operation
B. Acid-resistant
C. Enamel
D. Manual in operation
14. Tub waste openings in framed construction shall be protected by ___.
A. Completely covering the opening with plywood collars
B. Metal collars or screens
C. Filling the annular space with approved fiber material
D. flasings
15. The minimum wall thickness for threaded plastic pipe shall be ___ *
A. Schedule 40
B. Schedule 80
C. 1/8 inch
D. 1/16 inch
16. Pipe joint material shall be insoluble inwater, nontoxic, and applied ____.
A. On male threads only
B. On pipe threads and inside fittings
C. On inside fitting threads only
D. In warm weather only
17. The distance between the center of urinal shall not be less than ___
A. 12"
B. 15"
C. 24"
D. 30"
18. A mixing valve that senses outlet temperature and compensates for fluctuations in
 incoming hot or cold water temperature is a ___ *
A. Combination thermostatic/pressure-balancing valve
B. Thermostatic (temperature control) valve
C. Pressure-balancing valve
D. None of the above
19. The building drain from the front building may be extended to the rear building
when both buildings are located ___.
A. On an ineterior (when driveway cannot be used)
B. 300 ft from the public sewer
C. 200 ft from the public sewer
D. On a corner lot
20. A pipe that makes an angle of not more than 45 degree with the vertical is
considered ___
A. Vertical
B. Horizontal
C. Crooked pipe
D. Diagonal pipe
21. A permanently installed mechanical device, other than an ejector, for removing
sewage or liquid waste from a sump is called a sewage pump.
A. True
B. False
C. Maybe
22. Threaded pipe (I.P.S.) 3/4 inch, except for gas piping, installed horizontally shall
be supported at appproximately ___.
A. 5-foot intervals
B. 10-foot intervals
C. 12-foot intervals
D. 15-foot intervals
23. Roofs, inner courts, vents shafts, light wells, or similar areas having rainwater
drains shall discharge to a ___
A. Outside of the building or to the gutter
B. Sanitary sewage system
C. Private sewage disposal system
D. Sump with pump discharge into the house drain
24. A device installed in a drainage system to prevent reverse flow is a ___
A. Sewage ejector
B. Check valve
C. Backflow preventor
D. Backflow valve
25. Water closet set side by side shall be no closer than ___
A. 15 inches center to center
B. 30 inches center to center
C. 24 inches center to center
D. 18 inches center to center
26. The overflow pipe from a fixture shall be connected on the ___- *
A. House or inlet side of the fixture trap
B. Operation side of the fixture trap
C. Sewer or outlet side of the fixture trap
27. A device and system of piping that maintains a water seal in a remote trap is called
a trap primer.
A. True
B. False
C. Maybe
28. The lowest portion of the inside of a horizontal pipe is called the ___
A. Invert mass
B. Invert
C. Flat vent
D. Bottom
29. Every water supply to a urinal shall be protected by an approved __-
A. Relief valve
B. Vacuum breaker
C. Metering valve
D. Automatic switch
30. Solder and fluxes used in piping system conveying potable water are prohibited
when the lead content exceeds..
A. 0.2 of 1 percent
B. 1 percent
C. 0.5 of 1 percent
D. Less than 10 percent
31. I.P.S. is the abbreviation for ___
A. Iron pipe standard
B. Iron pipe size
C. Inside pipe standard
D. Inside pipe size
32. Piping in the ground shall be laid on __-.
A. A firm bed
B. Concrete blocks
C. Redwood stakes
D. Common bricks
33. The type of acceptable joints for PEX shall be ___
A. Metal insert or metal compression
B. Solvent cemented
C. Sheilded coupling
D. Mechanical
34. A device integrated within an ai accumalator vessel that is designed to discharge a
predetermined quantity of water to fixtures for flushing purposes is a (an) __ *
A. Surge tank
B. Day tank
C. Expansion tank
D. Flushometer tank
35. PEX is the definition for ___
A. Polyethylene
B. Polybutylene X
C. Cross-linked polyethylene
D. None of the above
36. To provide watertight joint in the floor, shower drains and floor drains are
required to be ___
A. Extra-heavy cast iron
B. Suitably flanged
C. Coated with asphalt
D. Set in waterproof cement
37. Horizontal hubless pipe shall be braced at not more than 40-foot intervals to
prevent ___.
A. Noise
B. Leaking
C. Vertical movement
D. Horizontal movement
38. A drinking fountain installed outside shall be connected to an approved drainage
system.
A. True
B. False
C. Maybe
39. Disposal of sewage, or other liquid waste, shall be by means of __
A. The drainage system of the building or premises
B. sewage retaining tanks
C. Subsurface leaching pits
D. Chemical toilets
40. Two-inch horizontal copper tubing drain pipe shall be supported at ___
A. 4 foot intervals
B. 6 foot intervals
C. 10 foot intervals
D. 12-foot intervals
41. A pressure surge-absorbing device operating through the compressibilty of air is
called a(an) ___ *
A. Flushometer valve
B. Hammer arrestor
C. Air chamber
D. Backflow preventor
42. A standard that is an extensive compilation of provision covering broad subject
matter is the dedfinition for ___
A. Listed
B. Legal document
C. Code
D. Standards
43. The principal artery of the venting system to which branches may be connected is
called the ___
A. Branch vent
B. Vertical vent
C. Vent
D. Main vent
44. The provisions of the code allow an alternate material or method of construction
provided it is ___. *
A. Approved by the architect as an alternate
B. Accepted by the owner as analternate
C. Approved by the Authority Having Jurisdiction as alternate
D. Manufactured by a reputable organization
45. Galvanized sheet steel of not less than 16 U.S. gauge may be used to make
dishwashing sinks for ___-
A. Restaurants
B. Lunch counters
C. Commercial buildings
D. Residential buildings
46. In seismec zone 1 and 2, hubless cast iron piping 5 inches or larger suspended in
exposed locations over high traffic areas, and over four feet in length, shall be
provided with support on both sides of the coupling
A. True
B. False
C. Maybe
47. Drinking fountains shall not be installed in ___.
A. Public toilet rooms
B. Schoolyards
C. Bars
D. Restaurants
48. When supporting horizontal piping 5-inches in diameter with hangers, a __ inch
diameter rod shall be used.
A. 1
B. 1/2
C. 5/8
D. 3/8
49. Drain pipes subject to condensation over food storage in food-handling
establishment shall be ___.
A. Installed with a spill pan
B. Thermally insulated
C. Remouled out of the area
D. Tested with 5 psi of air
50. Static pressure is pressure existing without any flow.
A. True
B. False
C. Maybe
51. Closet bends or stubs shall be cut off so as to present a smooth surface, even with
the ___.
A. Top of the rough floor
B. Top of the closet ring
C. Top of the finish floor
D. Bottom of the closet ring
52. When a backflow prevention device does not bear a critical level marking, the part
 of the device that shall constitute the critical level is the ___ *
A. Top
B. Center
C. Bottom
D. Outlet invert
53. Mechanical devices may be used to complete backfilling where covering above
any piping is at least ___ inches
A. 6
B. 12
C. 30
D. 36
54. A document, the main text of which contains only mandatory provisions using the
word "shall" to indicate requirements, is best described as a __ *
A. Code
B. Standard
C. Law
D. Legal document
55. A pipe inside a building that conveys storm water from the roof to a strom drain is
called a(an) ___
A. Conductor
B. Building storm drain
C. Rain leader
D. Adductor
56. An unconfined space is a room or space having a volume equal to at least ___ of
the aggregate input rating of all the fuel-burning appliances in the space. *
A. 10 cu. ft per Btu/hr
B. 25 cu. ft per 1,000 Btu/hr
C. 50 cu. ft per 1,000 Btu/hr
D. 100 cu. ft per Btu/hr
57. It is permitted to drill and tap a vent pipe to connect an indirect waste pipe.
A. True
B. False
C. Maybe
58. Piping, fixtures, or equipment that are installed so that they interfere with normal
operation and use of windows or doors shall be ___
A. Identified for restricted use
B. Protected from damage
C. Approved if acceptable by the owner
D. Relocated to avoid interference
59. No plumbing system, drainage system, building sewer, private sewage disposal
system, or parts thereof, shall be located in ___
A. Any lot other than the lot that is the site of the building served by such facilities
B. The walls, floors, or underground in any building
C. Pipe access spaces where accessible for repair
D. Any garage, or equipment or locker room
60. The discharge from clinical sinks and conveyed to the building drain is defined as
a waste pipe.
A. True
B. False
C. Maybe
61. No dry or chemical closet (toilet) shall be installed in any building used for human
habitation unless first approved by the ___
A. Owner
B. Plumbing inspector
C. City clerk
D. Health officer
62. All trenches deeper than the footing of any building or structure and paralleling
the same shall be at least ___.
A. 5-foot intervals
B. Every other story
C. Each floor not to exceed 15 ft
D. 10-foot intervals
63. The distance between the wall to the center of water closet shall not be less than
__-
A. 12"
B. 15"
C. 24"
D. 30"
64. All piping fixtures, and equipment shall be adequately supported in accordance
with the ___.
A. Contractor
B. Code
C. Owner
D. Engineer
65. An outlet on a boiler to permit emptying or discharging of sediment is called a(an)
___ *
A. Boiler blowoff
B. Aspirator
C. Relief valve
D. Atmospheric check valve
66. PEX piping may be coupled together with shielded couplings.
A. True
B. False
C. Maybe
67. The length along the centerline of the pipe and fittings is the ___
A. Diameter length
B. Circumferential length
C. Developed length
D. Diagonal length
68. All materials, fixtures, or devices used or entering into the construction of
plumbing and drainage systems shall ___. *
A. Conform to approved applicable standards
B. Conform to the job specifications
C. Conform to price job
D. Conform to materials availability
69. The restroom facilities in a private day care center are classified as public use.
A. True
B. False
C. Maybe
70. A connection to the public sewer, or private sewage disposal system, is required
for ___
A. Buildings with plumbing fixtures
B. Buildings with emergency drain systems
C. Buildings with storm drain systems
D. Buildings with or without plumbing fixtures
71. Joints in copper shower pan liners shall be ___.
A. Burned
B. Swaged
C. Sealed with epoxy cement
D. Soldered or brazed
72. The curb or threshold of a shower compartment may be eliminated ___.
A. To comply with accessibility standards
B. For gang showers
C. In hospitals only
D. Not permitted
73. Copper tubing installed vertically shall be supported at each storey or at maximum
intervals of ___.
A. 4 ft
B. 10 ft
C. 8 ft
D. 6 ft
74. When installing ___, the Authority Having Jurisdiction shall require evidence of
the competency of the installers.
A. Potable water piping
B. Fuel-gas piping
C. Medical gas piping
D. Plumbing appurtenance
75. Fixtures having concealed slip-joint connections shall be provided with _--
A. A utility space or access panel
B. A ladder and a light fixture
C. Red brass fittings
D. Rubber gasket
76. By code definition, a stack is always __
A. Straight
B. Vertical
C. Horizontal
D. Exposed
77. The minimum distance from a side wall or partition to the center of a urinal shall
be ___ inches
A. 6
B. 12
C. 18
D. 24
78. The vertical depth of a trap seal is measured from __
A. The outlet of the trap to the bottom of the trap
B. The inlet of the trap to the outlet of the trap
C. The crown weir to the top of the dip of the trap
D. The inlet of the trap to the bottom of the trap
79. The combination of fittings that may be used to make an offset and is considered a
vertical pipe are:
A. 1-45 degree and 1-45 degree
B. 1-60 degree and 1-45 degree
C. 1-90 degree and 1-45 degree
D. 2-90 degree and 1-45 degree
80. Gutters in public shower rooms shall be sloped not less than ___
A. 5%
B. 10%
C. 2%
D. 3%
81. A combination building sewer is (a)___
A. Combination of all sewer and drainage piping from inside and outside of the
building
B. Building sewer that conveys industrial waste and domestic sewage
C. Building drains that convey waste and storm water
D. Building sewer that conveys both sewage and storm water
82. Water that is safe for people to drink is referred to by this code as ___ *
A. Industrial water
B. Potable water
C. Soft water
D. Hard water
83. Wall-mounted water closets shall be securely bolted to ___.
A. The wall
B. Double two by six studs
C. A carrier fitting
D. A closet bend
84. Any pressure less than that exerted by atmospheric is a(an) __
A. Vacuum
B. Negative pressure
C. Atmospheric pressure
D. Positive pressure
85. Trough urinals shall be ___.
A. Permissible if constructed of concrete
B. Prohibited
C. Allowed in bus stations
D. Required in large associations
86. Voids around piping passing through concrete floors on the ground shall be ___
A. Sealed
B. Packed
C. Flanged
D. Protected
87. A joint obtained by joining of metal parts with metallic mixtures of alloys that
melt at a temperature up to and including 840 degree F is a ___ *
A. Brazed joint
B. Soldered joint
C. Metallic joint
D. Flared joint
88. Test gauges shall not have a pressure range more than __ the test pressure.
A. Equal
B. Twice
C. 15 psi
D. 60 psi
89. Gutters in public shower rooms shall be sloped not less than ___
A. 2%
B. 3%
C. 5%
D. 10%
90. A horizontal drain that is sized to provide free movement of air above the flow
line of the drain is called a __
A. Solvent waste and vent system
B. Combination waste and vent system
C. Continuous waste system
D. Durham waste and vent system
91. Shower pan linings may be constructed with ___
A. 26 B&S gauge copper
B. Zinc-coated steel
C. 15 pounds asphalt felt
D. 3 pounds per square foot lead
92. Wiped joints are permitted with ___.
A. Lead
B. Steel
C. Plastic
D. Cast iron
93. That portion of a drainage system that does not drain by gravity into the building
sewer is known as a__
A. Storm sewer
B. Building subdrain
C. Sewer ejector
D. Building supply
94. Surfaces to be joined by soldering or brazed shall be cleaned bright by ___.
A. Mechanical or manual means
B. A self-cleaning flux
C. A corrossive flux
D. Sulfuric acid
95. Unsanitary and insanitary share the same meaning
A. True
B. False
C. Maybe
96. All design, construction, and workmanship shall be in conformity with ___

A. Practices of the contractor

B. Accepted engineering practices
C. Standard shop procedures
D. Job plan and specifications
97. Joints at the roof, around pipes, shall be made watertight by the use of ___.
A. A sealing compound
B. Flashing material
C. 15 pound felt
D. Oakum