Poo pipe routing

[64mark]

Hi everyone, Currently looking at redoing our old outdated bathroom and moving the currently separate toilet into there. Its a small bathroom 1450x2100 and we have drawn up a plan we think will work for us.

What I'm stuck on is which way would be best to run the new poo pipe, can either go down and between joists to the front of the house, exiting underneath where the current pipe does and joining the current downpipe. But this will be very close to a pitched porch roof.

Or go the other way out of the side of the house, install new downpipe and connect downstairs toilet into it also. And connect underground as required, which may get expensive.

Any help would be appreciated thankyou

 

[Ian H]

I’d come out backwards and put a new junction in the drain. Are there any manholes nearby?

 

[64mark]

Man hole is approx 15ft away from the drains in the picture below,
A new junction underground at the bottom of this pic, into a new stack?

 

[Nige F]

Yes do it there - excavate carefully round the gulley - you might find the pipe is deep enough to use as the stack connection

 

[Hugh Jaleak]

As above, you've got a foul drain there already, see if it is deep enough to connect onto. You need a minimum distance of 450mm between the bottom of the outgoing bend at the base of the stack and the lowest connection, i.e. the downstairs WC.