IPC Vents and Venting 3

Question 1

According to the IPC, what is the minimum distance a vent opening must be from any operable window or air intake?

Accepted Answer

10 feet

Answer

3 feet

Answer

5 feet

Answer

15 feet

Question 2

What does the IPC specify regarding the slope of horizontal vent piping?

Accepted Answer

They must slope back toward the drain connection to allow moisture drainage

Answer

Horizontal vents must be level with no slope

Answer

They must slope upward toward the vent terminal at 1/4 inch per foot minimum

Answer

Any slope is acceptable

Question 3

Under the IPC, what is a common vent and how many fixtures can it serve?

Accepted Answer

A single vent serving two fixtures on the same floor level

Answer

A vent serving an entire building, unlimited fixtures

Answer

A shared vent for up to 4 fixtures, any floor

Answer

A community vent system, up to 20 fixtures

Question 4

According to the IPC, at what height above the flood level rim of the highest fixture must a vent pipe rise before turning horizontal?

Accepted Answer

6 inches above the flood level rim

Answer

2 inches

Answer

12 inches

Answer

No specific height is required

Question 5

What does the IPC specify about the use of combination waste and vent systems?

Accepted Answer

They are permitted for floor drains, sinks, and lavatories under specific sizing rules

Answer

They are prohibited in all installations

Answer

They are only permitted in single-story buildings

Answer

They require special approval from the EPA

Question 6

Under the IPC, what protection must be provided for vent pipes installed in locations where they may be damaged?

Accepted Answer

They must be protected with guards, sleeves, or relocation to a protected area

Answer

No protection is required for vent pipes

Answer

Only metal vent pipes require protection

Answer

Vent pipes are always installed in protected locations