1. Individual vents.

Question 0

3. What type of vent is used for most of the fixtures?

Answer 0

They are being vented by an individual vent. This type of vent is sometimes called a back vent and is used to vent only one fixture trap.

Question 1

1. Individual vent permitted.

Answer 1

Each trap and trapped fixture is permitted to be provided with an individual vent. The individual vent shall connect not more than 4 feet to the fixture drain of trap or trapped fixture being vented