On Mon, 08 Feb 2021 10:07:50 -0800, George Miles wrote:

I'm planning on a few new toilets -
what's the best kind of drainage set up so that its easy to clean if
there's ever a blockage?

Should the drainage pipes be directly underneath or to a side?
Should there be an inspection cover or not?

George

We have a one way valve at the top of our internal soil pipe boxed in
behind the upstairs loo.

However that isn't the final point in the run of soil pipe so this is
permissible.

The pipe goes under the house, being joined by the pipework from the
ground floor wet room.

It had to be sunk into the far edge of the original concrete raft to get
the correct fall.

Not sure about your question about underneath or to the side.
Normally the soil pipe run is behind the toilet and can be directly behind
or offset, although one I did there was a few feet of horizontal(ish) from
the toilet to the vertical stack outside.


Cheers



Dave R


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