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Worksheets2018 IPC CH 9A Quiz
Total questions: 25
Worksheet time: 13mins
Name
Class
Date
1.
01. The main purpose of venting is for __________.
a)
a. exhaust of sewer gases
b)
b. trap seal protection
c)
c. decreasing flow rates
d)
1. d. increasing flow rates
2.
02. A vent piping system is necessary to prevent pressure differentials of more than __________ against the trap seal of any fixture.
a)
a. 1 inch of water column
b)
b. 1 foot of head
c)
c. 1 PSI
d)
2. d. 0.433 PSI
3.
03. The vent system for a chemical waste system must __________.
a)
a. connect to the sanitary vent system above the highest fixture
b)
b. terminate through a wall to the outdoors
c)
c. be independent of the sanitary vent system
d)
3. d. terminate in a stack-type air admittance valve
4.
04. Prefabricated lead flashings for vent pipe penetrations must have a sheet weight of not less than __________ pounds per square foot.
a)
a. 3.5
b)
b. 2.5
c)
c. 1.25
d)
4. d. 0.75
5.
05. In a sanitary drainage system, what is the minimum number of vent pipes that are required to extend to the outdoors?
a)
a. one
b)
b. two
c)
c. one for each air admittance valve
d)
5. d. one for each vent stack or stack vent
6.
06. A vent stack connection to the base of a stack is required to connect__________.
a)
a. above the lowest horizontal branch
b)
b. to the building drain
c)
c. at or below the lowest horizontal branch
d)
6. d. a minimum of 10 pipe diameters away from the stack
7.
07. Where required to be protected against frost closure, the vent extension through the roof shall be not less than __________ inches in diameter beginning not less than __________ inches inside the thermal envelope.
a)
a. 4, 12
b)
b. 3, 12
c)
c. 3, 18
d)
7. d. 4, 6
8.
08. Frost closure protection for vent terminals is required in which of the following locations?
a)
a. Denver, Colorado
b)
b. Juneau, Alaska
c)
c. Goodland, Kansas
d)
8. d. South Bend, Indiana
9.
09. What is the minimum required height of a vent terminal located on a roof that serves as a sun deck?
a)
a. 1 foot
b)
b. 2 feet
c)
c. 7 feet
d)
9. d. 10 feet
10.
10. A vent shall terminate a minimum of __________ feet horizontally from or at least __________ feet above a window opening.
a)
a. 8, 3
b)
b. 10, 3
c)
c. 8, 4
d)
10. d. 10, 4
11.
11. What is the minimum required height above average grade for a vent terminating through the side wall of a building?
a)
a. 2 feet
b)
b. 7 feet
c)
c. 8 feet
d)
11. d. 10 feet
12.
12. Vent pipes installed on the exterior of a building must be protected against freezing if the 97.5-percent value for outside design temperature is __________.
a)
a. less than 5°F
b)
b. 5°F or less
c)
c. 0°F or less
d)
12. d. less than 0°F
13.
13. A dry vent is prohibited from offsetting horizontally until the vertical rise of the vent is __________.
a)
a. above the highest fixture branch connected to the building drain
b)
b. above the flood level rim of the highest fixture connecting to the building
c)
c. 6 inches above the connection of the stack vent to a drainage stack
d)
6" above the flood rim of the highest trap or trapped fixture being vented
14.
14. A kitchen sink with a 1 1/2-inch fixture drain must be vented within a developed length of __________ feet from the trap weir to the vent fitting.
a)
a. 3
b)
b. 5
c)
c. 6
d)
14. d. 8
15.
15. Which fixture is allowed to have a vent connection to the fixture drain below the weir of the trap?
a)
a. shower drain
b)
b. laundry sink
c)
c. floor drain
d)
15. d. water closet
16.
16. What is the maximum developed length of the fixture drain from the trap weir of a
a)
a. 8 feet
b)
b. 12 feet
c)
c. 16 feet
d)
16. d. unlimited
17.
17. In no case shall the diameter of stack vents and vent stacks be less than one-half the diameter of the drain served or less than __________ inches.
a)
a. 11/4
b)
b. 11/2
c)
c. 2
d)
17. d. 3
18.
18. Branch vents exceeding __________ feet in developed length shall be increased by one nominal size for the entire developed length of the vent pipe.
a)
a. 25
b)
b. 30
c)
c. 35
d)
18. d. 40
19.
19. For waste stacks having more than 10 branch intervals, the relief vent must be not less than __________.
a)
a. 2 inches in diameter
b)
b. the size of the vent stack
c)
c. one-half the diameter of the vent stack
d)
19. d. one pipe size smaller than the vent stack
20.
20. Where venting is required for a drainage stack offset, a vent shall connect to the stack __________ the offset.
a)
a. above
b)
b. not less than 12 inches above
c)
c. above or below
d)
20. d. above and below
21.
21. Individual and branch vent pipes exceeding 40 feet in developed length are required to be__________.
a)
a. not less than 2 inches in diameter
b)
b. one-half the diameter of the drain served
c)
c. not less than 2 pipe sizes smaller than the largest drain served
d)
21. d. one pipe size greater than otherwise required
22.
22. When a 11/4-inch diameter vent pipe serves the sump of a sewage ejector pump with a discharge capacity of 40 gpm, the maximum developed length of the vent is __________ feet.
a)
a. unlimited
b)
b. 40
c)
c. 72
d)
22. d. 160
23.
23. A relief vent is required for a waste stack having more than ___________ branch intervals.
a)
a. 16
b)
b. 5
c)
c. 8
d)
23. d. 10
24.
24. For a 2-inch fixture drain, the maximum distance from the trap weir to the vent fitting is __________ feet.
a)
a. 3
b)
b. 5
c)
c. 6
d)
24. d. 8
25.
25. A vent shall not be installed within __________ pipe diameters of the trap weir.
a)
a. 2
b)
b. 3
c)
c. 4
d)
25. d. 6
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