waste vent

waste vent

[′wāst ‚vent]
(engineering)
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

stack vent

stack vent, 1
1. The extension (to the open air) of a soil or waste stack above the highest horizontal branch drain or fixture branch connected to the stack. Also called a soil vent or waste vent.
2. In built-up roofing systems, a vertical outlet permitting water vapor, which is entrapped within the insulation, to escape.
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.
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