Lowering basement slab - what about main DWV line?

Posted by Matt on February 27, 2004 at 00:09:24:
Hi - we're looking to add a bathroom to the basement, but the cieling height is only 79 inches - local code requires at least 84 (really 90 for a shower, but who's counting). As I am in the process of cutting the slab to run the piping, I had the thought of simply 'lowering' the slab a good foot or so to surpass the code requirements. Then I got to thinking about the angle and slpoe for the main sewer line... Will I be able to do what I am thinking? Do I need to dig up the whole main waste line all the way to the street? If so, Is there a way to check it out and find out where to dig before I start ripping up everything? Thanks, Matt

Posted by Matt on February 27, 2004 at 00:09:24:

Hi - we're looking to add a bathroom to the basement, but the cieling height is only 79 inches - local code requires at least 84 (really 90 for a shower, but who's counting).

As I am in the process of cutting the slab to run the piping, I had the thought of simply 'lowering' the slab a good foot or so to surpass the code requirements. Then I got to thinking about the angle and slpoe for the main sewer line...

Will I be able to do what I am thinking? Do I need to dig up the whole main waste line all the way to the street? If so, Is there a way to check it out and find out where to dig before I start ripping up everything?

Thanks, Matt

Replies to this post

Re: Lowering basement slab - what about main DWV line? hj 01:16:16 02/27/04(3)
- Re: Lowering basement slab - what about main DWV line? Matt 09:28:51 02/27/04(2)
  - Re: Lowering basement slab - what about main DWV line? Paul B 21:59:16 04/09/04(0)
  - Re: Lowering basement slab - what about main DWV line? hj 14:59:52 02/27/04(0)