PLUMBING GENERAL EXAMINATION #2
QUESTIONS AND ANSWERS
The maximum number of bathtubs allowed on a 2-inch vent is _______ . Table 702.1
and Table703.2 - Answer-8
Six bathtubs and six showers require a common vent of not less than _____ inches.
Table 702.1 and Table 703.2 - Answer-2 inch
Concealed gas piping may be connected by ________ . 1210.3.1 - Answer-right and left
couplings
A _______ is not a standard fitting. 706.1, 706.2, 706.3 and 706.4 - Answer-45 degree
tee
Waste and vent pipes may be tested with a _______. 712.2 - Answer-10 foot head of
water
Gas pressure tests shall not be less than ________ . 1213.3 - Answer-10 pounds
Type B gas vents shall terminate at least _________ feet above the highest connected
draft hood or flue collar. 509.6.2.1 - Answer-5 feet
Prohibited on combination waste and vent systems are _______ . 910.7 - Answer-water
closets
Gas meters shall be located in _______ locations. 1208.6.1 - Answer-readily accessible
A water closet seat shall be sized for the _______ . 411.2.2 - Answer-bowl
The minimum size gas supply for a mobile home is ______ inch(es). 1215.4 - Answer-
3/4 inches
A pressure regulator shall be installed when the water pressure is in excess of ______
psi. 608.2 - Answer-80 psi
An expansion tank is required when ________ . 608.3 - Answer-back-flow preventer is
installed
A backwater valve is used to _______. 710.1 - Answer-prevent reverse flow in a
drainage system
, All devices or assemblies installed in a potable water supply for protection against back-
flow shall be maintained in good working condition by the _______ . 603.2 - Answer-
person having control of such devices
A ______ may be installed in a horizontal drain line. 706.3 - Answer-combination wye
and 1/8 bend
The maximum full pipe flow in gpm for hydromechanical grease interceptor with a 60
gpm rating requires ______ gpm size of grease interceptor for a 2 minute drainage
period. Table 1014.2.1 - Answer-35 gpm
After allowing for friction and other pressure losses, the water pressure shall be at least
_____ psi. 608.1 - Answer-15 psi
A gas meter shall not be placed ________. 1208.6.1.1 - Answer-adjacent to a driveway
and adjacent to a fire escape
The maximum fixture units on a 4 inch drainage stack are ________ .Table 703.2 -
Answer-256
Corrugated vent connectors shall _______ . 510.1.11 - Answer-not be smaller than the
listed appliance categorized vent diameter
The minimum dimension for an outside combustion air opening for a water heater shall
not be less than ______ inches. 506.5.3 (3) - Answer-3 inches
The developed length of 1 1/2 inch trap arms may be _______ . Table 1002.2 - Answer-
3 feet, 6 inches
The valve for controlling two or more openings in a cold water supply line may be a
_______ valve. 606.4 - Answer-fullway gate valve
A sewage ejector receiving the discharge of water closets or urinal shall have a
minimum discharge capacity of ______ gallons per minute. 710.3 (1) - Answer-20
gallons per minute
The pressure at the base of a column of water 10 feet high is approximately ________
psi. 610.5, Appendix A, A 3.2 - Answer-4.3 psi
The vent pipe serving a combination waste and vent systen with a 4-inch drain pipe
shall be at least ______ inches. 910.3 - Answer-3 inches
A 2-inch horizontal copper-tubing cold water line shall be supported at intervals of
______ feet. Table 313.1 - Answer-10 feet
QUESTIONS AND ANSWERS
The maximum number of bathtubs allowed on a 2-inch vent is _______ . Table 702.1
and Table703.2 - Answer-8
Six bathtubs and six showers require a common vent of not less than _____ inches.
Table 702.1 and Table 703.2 - Answer-2 inch
Concealed gas piping may be connected by ________ . 1210.3.1 - Answer-right and left
couplings
A _______ is not a standard fitting. 706.1, 706.2, 706.3 and 706.4 - Answer-45 degree
tee
Waste and vent pipes may be tested with a _______. 712.2 - Answer-10 foot head of
water
Gas pressure tests shall not be less than ________ . 1213.3 - Answer-10 pounds
Type B gas vents shall terminate at least _________ feet above the highest connected
draft hood or flue collar. 509.6.2.1 - Answer-5 feet
Prohibited on combination waste and vent systems are _______ . 910.7 - Answer-water
closets
Gas meters shall be located in _______ locations. 1208.6.1 - Answer-readily accessible
A water closet seat shall be sized for the _______ . 411.2.2 - Answer-bowl
The minimum size gas supply for a mobile home is ______ inch(es). 1215.4 - Answer-
3/4 inches
A pressure regulator shall be installed when the water pressure is in excess of ______
psi. 608.2 - Answer-80 psi
An expansion tank is required when ________ . 608.3 - Answer-back-flow preventer is
installed
A backwater valve is used to _______. 710.1 - Answer-prevent reverse flow in a
drainage system
, All devices or assemblies installed in a potable water supply for protection against back-
flow shall be maintained in good working condition by the _______ . 603.2 - Answer-
person having control of such devices
A ______ may be installed in a horizontal drain line. 706.3 - Answer-combination wye
and 1/8 bend
The maximum full pipe flow in gpm for hydromechanical grease interceptor with a 60
gpm rating requires ______ gpm size of grease interceptor for a 2 minute drainage
period. Table 1014.2.1 - Answer-35 gpm
After allowing for friction and other pressure losses, the water pressure shall be at least
_____ psi. 608.1 - Answer-15 psi
A gas meter shall not be placed ________. 1208.6.1.1 - Answer-adjacent to a driveway
and adjacent to a fire escape
The maximum fixture units on a 4 inch drainage stack are ________ .Table 703.2 -
Answer-256
Corrugated vent connectors shall _______ . 510.1.11 - Answer-not be smaller than the
listed appliance categorized vent diameter
The minimum dimension for an outside combustion air opening for a water heater shall
not be less than ______ inches. 506.5.3 (3) - Answer-3 inches
The developed length of 1 1/2 inch trap arms may be _______ . Table 1002.2 - Answer-
3 feet, 6 inches
The valve for controlling two or more openings in a cold water supply line may be a
_______ valve. 606.4 - Answer-fullway gate valve
A sewage ejector receiving the discharge of water closets or urinal shall have a
minimum discharge capacity of ______ gallons per minute. 710.3 (1) - Answer-20
gallons per minute
The pressure at the base of a column of water 10 feet high is approximately ________
psi. 610.5, Appendix A, A 3.2 - Answer-4.3 psi
The vent pipe serving a combination waste and vent systen with a 4-inch drain pipe
shall be at least ______ inches. 910.3 - Answer-3 inches
A 2-inch horizontal copper-tubing cold water line shall be supported at intervals of
______ feet. Table 313.1 - Answer-10 feet
