Soil stack question

[skeetly]

Originally Posted by phil24_7

Here's the pic of the soils stack. I want it moved to the front of the house. The drain runs down the side of the building, between the building and the car.

All those joints are around about the roof level then?

Flat roof?

If I was building your garage I would still go with leaving it where it is.
Remove the section containing the 2 branches from the 2 toilets.
You can reduce the slope of those two pipes from the toilets so that they enter the stack higher up.
Use one of these:

Hopefully higher then where it passes through the flat roof.
It's pretty trivial to form a weatehr tight seal where a stack pipe passes through a flat roof.

The whole lot can be boxed off easily afterwards.

If yoou move it to the front you'll have far more work to do altering those junctions in addition to the expense of moving the stack.
I'd say the pipe running from those 2 toilets would end up lower than the roof level right at the corner and you'd have another mess to sort out there.
I really would leave it where it is.

I agree with skeetly, seems straight forward to me to leave it, mono pitch roof on garage, you could hide the lot in there.