positioning of soil pipe in a slab

[UK4X4]

I'm outside the US and can't pop into the local library.........and funilly enough can't find it on the web either

probably using the wrong "english"


In my house plan I have bathrooms positioned in both rear corners

In the UK the soil pipe exists the rear of the apliance

In the US its below.

I need to draw up my slab plan and want to dimension where the soil pipe and vent should be.

The plumber wants 1K to put in 3 pipes in the slab--------all three on the outside wall

ie max 3ft long

The toilets in the house are stacked above each other- to make plumbing simpler so in the corner of the building will be the main soil stack

then on each floor another toilet

[MountainDon]

Wall mount (rear exit) toilets are available in the US, but harder to find. Would that help?  Google wall mount toilet.

[UK4X4]

Ok found it center of the floor drain needs to be 12" from the wall

[Alan Gage]

Ok found it center of the floor drain needs to be 12" from the wall

Just to clarify, that's 12" from the finished wall. If you're doing 1/2" sheetrock you'd measure 12 1/2" from the studs.

Alan