"Paul" wrote in message
...
We are thinking of re-arranging our bathroom layout which will mean moving
the toilet onto another wall, this will mean the waste pipe being extended
by about ten feet and also turning a corner. Will there be a problem if
we
do this, looking around other houses they seem to have the toilet next to
the stack so the pipe work is as short as possible.

Paul,

You cannot run the stack around the bathroom. It requires a minimum "fall".
You will probably have to dig up outside and extend the stack underground to
the correctly position. and then rise up to the toilet position.