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Hey, guys. Something occurred to me the other day. Vessel sinks have made it into the home centers, meaning that DIY'ers will be buying them and replacing their existing in-counter lavs with them. ...

The minimum vent size is based on the number of drainage fixture units served by the vent. For a secondary vent serving just the fixtures you listed, 2" should be sufficient. However, your code...

My local inspector prefers a san tee on its back to a wye/combo for vertical vent-only connections to a horizontal drain because "it vents better." No doubt backed up by extensive testing in his...