Under slab sewer re-pipe

[Holeshot]

What would be the best way to route the vent pipes and sewer lines under the slab.

 

[Reach4]

Often the best path is thru the yard and around, rather than digging up your whole slab.

 

[Sponsor]

 

[Holeshot]

Often the best path is thru the yard and around, rather than digging up your whole slab.

Thank you. Yes, I rather not rip up the tile and concrete foundation. I dug the 45 degree trench under the slab with a plan to install the new ABS at 45 degrees.
Does the WC need a vent if it's only about 5'?

Problem with the 45 degree trench for the WC and bathtub is, I still have to dig for the vanity.
I'm thinking digging a separate 45 degree trench for the vanity is going to be about a 8'-9' run under the slab.

Maybe I can use the existing trench to reach the vanity waste and vent? If I do, the vanity sewer line would be angled away from the street.

 

[Reach4]

Does the WC need a vent if it's only about 5'?

Usually the WC does not have its own vent, but gets wet-vented by something else -- usually the lavatory. Will your lavatory drainage be able to join the toilet piping before any non-bathroom stuff joins in?

You might make a roughly to scale sketch of where fixture drains are, what piping you don't want to change, and what piping exists that you expect to change. Include vent info.

 

[Holeshot]

Yes, it's possible. The drawings I uploaded are the site, floor plans and the elevation plans. Existing and proposed sewer lines. And four photos.

Can everyone view the documents and pictures I uploaded?