Venting new bathroom plumbing

Old 08-15-05, 08:28 AM
Thread Starter
Join Date: Apr 2005
Location: Royal Oak, MI
Posts: 209
Upvotes: 0
Received 0 Upvotes on 0 Posts
Venting new bathroom plumbing

I'm putting in a new bathroom over a crawlspace and working on laying out the DWV system. I have a toilet, shower, sink and a whirlpool tub. The wall where I'll be running the vent through the roof is North of the toilet, shower and sink, while the main sewer stack is to the South. The shower and sink are adjacent to the wall, the west wall is an exterior wall and the east wall has a door in it...

Is it okay to have a horizontal run on the vent pipes under the floor, or do I have to route the drainpipe North so I can run the vent pipe vertically off of it before it runs South?
Old 08-15-05, 09:45 PM
Join Date: Aug 2003
Location: KY/OH
Posts: 3,362
Upvotes: 0
Received 0 Upvotes on 0 Posts
The vents have to be a minimum of 42" above the battery of fixtures that it serves.

If you run the vents in the floor, that is considered flat venting which is not permissable by code.

Thread Tools
Search this Thread
Ask a Question
Question Title:
Your question will be posted in: