adding to existing soil pipe

[Mars]

I want to put a soil pipe into an existing downstairs loo. The toilet at present just goes straight down and out into the outside drain, so because I want to put a loo up stairs directly above I thought I could move the toilet over 18 inches and build an internal stack up the corner with a joggle of say 45 degrees and go straight down the existing hole and branch the downstairs loo off the side. I would branch the upstairs loo off the side and carry on up and out. Can anyone see a problem with that idea.

 

[Nige F]

Building regs, and ofset in wet part of stack

 

[Mars]

Are they free online. I can't find a website do you have one.

 

[chrishutt]

The ODPM web site's been given loads of times. Do a search on Building Regs or go to www.odpm.gov.uk and search for Approved Document H.

 

[Mars]

OK thanks Chris just the job but just one question, the info shows there must be 750mm between an offset and a junction. Can the offset be 2 right angle radius bends or does it need to be 45 degrees.