Venting a bathroom sink

Posted by Robert on December 02, 2001 at 13:39:24:
Our builder decided to vent the downstairs bathroom sink out the side of the vanity, not out the back. Since the vanity is in a corner of the bathroom this was OK. Now, we want to replace with a freestanding vanity, and run the pipes out the back or through the floor. Problem is there is no DWV in the back of the current vanity. Now, the question. Can I vent the sink downward to the DWV pipe below the subfloor? I'm envisioning a trap, then a downsloping pipe to the main DWV. Is this kosher? If not, what are my options? Thx, RJ

Posted by Robert on December 02, 2001 at 13:39:24:

Our builder decided to vent the downstairs bathroom sink out the side of the vanity, not out the back. Since the vanity is in a corner of the bathroom this was OK. Now, we want to replace with a freestanding vanity, and run the pipes out the back or through the floor. Problem is there is no DWV in the back of the current vanity.

Now, the question. Can I vent the sink downward to the DWV pipe below the subfloor? I'm envisioning a trap, then a downsloping pipe to the main DWV. Is this kosher? If not, what are my options?

Thx,

RJ

Replies to this post

Re: Venting a bathroom sink hj 17:24:45 12/02/01(2)
- Re: Venting a bathroom sink Robert 20:51:27 12/03/01(1)
  - Re: Venting a bathroom sink hj 22:38:08 12/03/01(0)