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Plumbingaka: main ventaka: stack ventaka: plumbing vent

Vent Stack

In Plain English

The vertical pipe that goes up through the roof to let air into the drain system and vent sewer gas out safely.

Definition

A vertical pipe in the drain-waste-vent system that extends from the base of the building to a termination point above the roof, providing air circulation to equalize pressure in the drainage system and exhaust sewer gases safely. The main vent stack connects to the soil stack and must terminate at least 6 inches above the roof. Branch vents from individual fixtures connect to the vent stack.

Example

Snow and debris blocked the vent stack termination, causing gurgling drains and sewer gas odors throughout the building.

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