Red Seal Interprovincial Plumber (306A) Exam

What is a 'stack vent' in plumbing terminology?

A separate vent pipe running alongside a soil stack The extension of a soil or waste stack above the highest horizontal branch connection A vent connected at the base of a stack A mechanical vent device installed on the roof

Correct Answer:

The extension of a soil or waste stack above the highest horizontal branch connection

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