DIY Home Improvement Forum banner
1 - 5 of 5 Posts

· Registered
2 Posts
Discussion Starter · #1 ·
Hi, first time poster here.

I have a basement toilet that is within 4ft and connected to the main stack. It does not have an additional vent. It was this way when I purchased the house and seems to work fine for the few times we have used it. We are in the process of completing this basement bathroom but I really don't want to bust up the concrete floor. Could someone please explain "Critical distance" and if it applies for my situation as well as the ramifications if I left the toilet connection as is?


· Long-Time DIYer
1,460 Posts
A toilet has a built-in trap and has to be within a "critical distance" from the stack based on the size of the closet bend line. Local code from your Building Inspection Department can tell you what it is in your jurisdiction.
The 4' should be fine everywhere I would think.
1 - 5 of 5 Posts
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.