Chapter 31Vents

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Question 1 1.

What is the maximum pressure differential allowed for the liquid seal of any fixture trap within a plumbing system?

Question 2 2.

Question 3 3.

It must have at least one vent pipe that connects to an island fixture vent.
It must have at least one dry vent pipe that extends to the outdoors.
It must have at least one vent pipe that connects to a wet vent system.
It must have at least one vent pipe that terminates indoors with an air admittance valve.

Question 4 4.

Not less than 2 inches (51 mm) above the roof.
Not less than 6 inches (150 mm) above the roof or anticipated snow accumulation, whichever is greater.
Not less than 7 feet (2134 mm) above the roof.
Not less than 12 inches (305 mm) above the roof.

Question 5 5.

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