drain issues

[kevinmachell]

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Posted Today, 08:07 AM

Hello, I have two related questions that I need advice about please.
I am building a downstairs bathroom extention.

The property has been extended previously. The attached diagram will show the approx positions of all drain pipes below ground. Can I connect a level access shower drain into an underground soil pipe? If so. How do I do it?

Secondly, Because of the proximity of the new inspection chamber to the old soil connection, Do I still need to vent the new soil pipe ?

Many thanks for your considerations

kevin

 

[oldbutnotdead]

Depends if your underground pipe is deep enough to allow a bit of fall from shower waste to underground.

If you've got plenty of fall and there's only the shower draining into it then don't bother running the soil pipe under the floor- terminate it with a roddable gulley outside the wall and drain the shower into that gulley. No stack pipe required and (if you use a 45 degree branch onto the main pipe) I don't think you'd need an IC at the junction since you can rod both runs in the direction of flow (new run from the gulley, old run from the assumed IC where the existing joins the 6" sewer). But BCO will advise in detail.

You don't show any inspection chambers on your PDF (and why did you use a PDF? Why not just a JPEG so it'll show inline rather than needing downloading)