wet vent toilet?
Posted by Tim on August 07, 2001 at 11:39:24:
I am plumbing a new 1/2 bath on the first floor. The 3" main waste/vent stack is directly behind the new toilet & serves as a waste/vent pipe for a bathtub, vanity sink & toilet directly upstairs. My question is this: do I need to provide a 2" auxiliary vent for the new toilet, or can I use the vertical waste/vent stack as a wet vent? The sink in the new bathroom will have a seperate vent, but because of the HVAC ducts in the basement, it would be VERY difficult to provide an auxiliary vent for the toilet. If I do need to provide a seperate vent for the new toilet, can I use a 90 turn with a 2" side inlet just below the toilet flange(I realize that the 2" side inlet won't be above the water line, but would it be too close to the toilet discharge to be an effective vent?)

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