96. The size of the drainage piping must not be reduced in size in the direction of the flow.     Is a 4-inch by 3-inch (102mmby 76 mm) water closet connection considered as a reduction in size?

A. Yes

B. No

97. The minimum slope of a 2 inch horizontal drainage pipe is _____ inch per foot.

A. 1/4

B. 1/8

C. 1/16

D. level

98. Condensate drains must be_______________ as required by the equipment or appliance manufacturer.

A. copper

B. trapped

C. PVC

D. elbowed

99. The shower compartment access and egress opening must have a minimum clear and unobstructed finished width of _______________________.

A. 22 inches (559 mm)

B. 24 inches (610 mm)

C. 28 inches (711 mm)

D. 30 inches (762 mm)

100. Condensate piping used to drain liquid away from condensing appliances must not be less than ________________ internal diameter and shall not decrease in size from the drain pan connection to the place of condensate disposal.

A. 1/2-inch (13 mm)

B. 3/4-inch (19 mm)

C. 1-inch (25 mm)

D. 2-inch (51 mm)

101. At the points of interconnection between the hot and cold water supply piping systems and the individual fixtures, appliances or devices, provisions must be made to __________________ such piping systems.

A. prevent flow between

B. to mix and balance

C. pressure balance

D. any of these

102. All storage water heaters operating _______________ must be provided with an approved, self-closing (levered) pressure relief valve and temperature relief valve or combination valve.

A. above 110°F (43°C)

B. above 140°F (60°C)

C. above 160°F (71°C)

D. above atmospheric pressure

103. "What is the maximum number of drainage fixture units allowed to be connected to any portion of the building drain or the

building sewer, including branches of the building drain for a system with a 15 inch building drain pipe with a slope of 1/2 inch per foot."

A. 26

B. 250

C. 4,200

D. 12,000

104. Existing metallic water service piping used for electrical grounding must not be replaced with nonmetallic pipe or tubing _____________________________.

A. unless it is buried in direct contact with earth and ground

B. unless it is a secondary grounding system

C. unless it has a total length of less than 10 feet

D. until other approved means of grounding is provided

105. The following types of joints and connections must be prohibited for waste system piping is not allowed?

A. Solvent-cement joints

B. Solvent-cement joints between different types of plastic pipe.

C. Male and Female pipe threaded joints

D. none of these

106. A combination of approved bends that makes two changes in direction bringing one section of the pipe out of line but into a line parallel with the other section.

A. ANGLE

B. ELBOW

C. OFFSET

D. STREET-L

107. What minimum size of schedule 40 metallic pipe natural gas line that would be needed if the run is 350 feet long, the inlet pressure is 1.8 psi and the requirement of gas volume in cubic feet per hour is 445. The fuel is natural gas with a pressure drop of 0.3 inches on a water column over the length of the run.

A. 5

B. 4

C. 3

D. 2

108. The minimum size supply pipe for hose bibbs is _____ inch(es).

A. 3/8

B. 1/2

C. 3/4

D. 1

109. All storage water heaters operating above atmospheric pressure must be provided with an approved, self-closing (levered) pressure relief valve and temperature relief valve or combination. For installations with separate storage tanks there can not be a __________________ between a relief valve and the heater or tank served.

A. check valve

B. shutoff valve

C. check valve or shutoff valve

D. any of the above

110. Backfill must be free from discarded construction material and debris. Loose earth free from rocks, broken concrete and frozen chunks shall be placed in the trench in 6-inch (152 mm) layers and tamped in place until the crown of the pipe is covered by ____________________ of tamped earth.

A. 12 inches (305 mm)

B. two pipe lengths

C. two pipe diameters

D. and ample amount

111. For a whirlpool bathtub access must be provided to circulation pumps in accordance with the fixture or pump manufacturer’s installation instructions. Where the manufacturer’s instructions do not specify the location and minimum size of field-fabricated access openings, a 12-inch by 12-inch (305 mm by 305 mm) minimum sized opening shall be installed to provide access to the circulation pump. Where pumps are located more than _____________ from the access opening, an 18-inch by 18-inch (457mmby 457 mm) minimum sized opening shall be installed.

A. 2 feet (609 mm)

B. 4 feet (1218 mm)

C. 3 feet (914 mm)

D. none of these

112. Unfired hot water storage tanks must be insulated to a value of _______.

A. R-6

B. R-11

C. R-12.5

D. R-18.5

113. Garbage can washers __________________. The receptacle receiving the waste from the washer must have a removable basket or strainer to prevent the discharge of large particles into the drainage system.

A. must be trapped separately

B. must not be trapped

C. must be installed with common traps.

D. none of these

114. The __________ of individual, branch, circuit and relief vents must be measured from the farthest point of vent connection to the drainage system to the point of connection to the vent stack, stack vent or termination outside of the building.

A. developed length

B. legal limit

C. maximum number

D. minimum number