toilet waste

[marko65]

I want to run 1st floor toilet waste under floor - joists run the right way and want to use a swan neck mcalpine pan connector to keep away from joist that runs parallel with wall -

Depth of joists are 165mm and run from pan to stack is 1620mm -

if i put the pan connector into a 92.5 bend, and sit the bend so that it touches the underside of the flooring (allowing me to get enough fall) ,the top of the bend has to come out of the floor too much and I would have to end up cutting down the swan neck to just below where the neck finishes

This doesn't seem the right way and was looking for suggestions - does it seem possible given the measurements?

 

[Bahco]

Not sure if I understand but this might help you.

 

[Nige F]

enough fall @ that distance is 2 degrees also you can get a tight 90bend from Drain Center . Don`t be fooled by the 1 in 40 "rule" it`s for underground drains when they were 2foot long salt glazed

 

[marko65]

so would that mean about 32mm over the from pan to stack?

 

[Nige F]

that looks ok.It really won`t be an issue so close to the pan .-the water will have enough velocity Your 32mm in 1620 converts to c. 1- 1/4 inches in 64 - so I can visualise it . Go for it .

 

[marko65]

thanks for your help