max distance for wc from stub stack

[azas76]

I have put a toilet and basin upstairs in front of house, the SVP is at the back of the house, Its 8.5 metres away.
2 questions.
1/ is it possible to go that far?
2/ can i change the direction of the pipe on the way? drop the pipe down 1.6m then 8m run then a bend into a stub stack with AAV? (with access on each bend for rodding?
thx in advance

 

[muggles]

No, on two counts. Max run is 6 metres, and you're not allowed to run to a downstairs stub stack from upstairs. If it blocked downstairs and you used the upstairs toilet, you'd end up with sh*t flooding out downstairs

 

[azas76]

thanks muggles.
Is just the washing mashing running into that stub stack.
Also I found this, (pic uploaded)
Is this different?

 

[denso13]

If it is a new toilet where there wasn't one before it will need building regs approval. Better to check with the inspector who will ultimately sign it off.