2018 IPC CH 9A Quiz
Authored by Johnny Thulin
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Professional Development
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25 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
01. The main purpose of venting is for __________.
a. exhaust of sewer gases
b. trap seal protection
c. decreasing flow rates
1. d. increasing flow rates
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
02. A vent piping system is necessary to prevent pressure differentials of more than __________ against the trap seal of any fixture.
a. 1 inch of water column
b. 1 foot of head
c. 1 PSI
2. d. 0.433 PSI
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
03. The vent system for a chemical waste system must __________.
a. connect to the sanitary vent system above the highest fixture
b. terminate through a wall to the outdoors
c. be independent of the sanitary vent system
3. d. terminate in a stack-type air admittance valve
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
04. Prefabricated lead flashings for vent pipe penetrations must have a sheet weight of not less than __________ pounds per square foot.
a. 3.5
b. 2.5
c. 1.25
4. d. 0.75
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
05. In a sanitary drainage system, what is the minimum number of vent pipes that are required to extend to the outdoors?
a. one
b. two
c. one for each air admittance valve
5. d. one for each vent stack or stack vent
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
06. A vent stack connection to the base of a stack is required to connect__________.
a. above the lowest horizontal branch
b. to the building drain
c. at or below the lowest horizontal branch
6. d. a minimum of 10 pipe diameters away from the stack
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
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. 4, 12
b. 3, 12
c. 3, 18
7. d. 4, 6
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