Colin Wilson wrote:
Can anyone give me an idea of the typical measurements of an install
where the soil pipe is embedded in concrete in the floor - ie. what the
normal distance away from a wall the centre of the soil pipe would be ?
[snip]

I cannot help you with your main query, but here's a little tip - make sure
the toilet is positioned so that the seat stays up when you lift it. This is
not the case in our main bathroom, and it drives me crazy!

Rick