Vent stack

vent stack

[′vent ‚stak] (building construction) The portion of a soil stack above the highest fixture.

Vent stack

A vertical pipe connected with all vent pipes carrying off gases from a building. It extends through the roof and provides an outlet for gases and contaminated air and also aids in maintaining a water seal in the trap.

vent stack, main vent

vent stack A vertical vent pipe installed primarily for the purpose of providing