Is 1 1/2" Drain Pipe under Concrete Adequate for Sink, Disposal, and Diswasher

Posted by LW on January 01, 2002 at 16:23:53:
I recently had a plumber cut the concrete in the basement to install a sink, disposal, and dish washer drain to connect to a sewage pit with an ejector pump. After the pipe was installed, I noticed that he had put in 1 1/2 pipe rather than 2 inch. He told me that the 1 1/2 was adequate for the 8 foot drain length. My understanding is that 2 inch is required under concrete by code. My real concern is if 1 1/2 inch will handle the load. Any advice?

Posted by LW on January 01, 2002 at 16:23:53:

I recently had a plumber cut the concrete in the basement to install a sink, disposal, and dish washer drain to connect to a sewage pit with an ejector pump.

After the pipe was installed, I noticed that he had put in 1 1/2 pipe rather than 2 inch. He told me that the 1 1/2 was adequate for the 8 foot drain length.

My understanding is that 2 inch is required under concrete by code.

My real concern is if 1 1/2 inch will handle the load.

Any advice?

Replies to this post

Re: Is 1 1/2" Drain Pipe under Concrete Adequate for Sink, Disposal, and Diswasher hj 21:13:23 01/01/02(2)
- Re: Is 1 1/2 LW 05:25:11 01/03/02(1)
  - Re: Is 1 1/2 hj 08:12:15 01/03/02(0)