I am going to be putting a toilet under the stairs of the house I am renovating and am puzzling a little over the connection into the drains.

I probably need to discuss the options with the BCO but was wondering if it is possible to join it into the existing soil stack!

The hous is a Victorian terrace and the current situation is that the main sewer pipe runs along the back of the houses (ours is third in line of 6) and the only current connection into the drain (as viewed from the inspection chamber) is the main soil stack.  I haven't excavated around the bottom of the stack yet but there are also an old (outside) WC connection which branches straight into the sewer pipe outside of the IC and a rainwater gullkey which does the same on the other end of the IC.

there is a diagram and photo at http://www.engelside.co.uk/toilet.htm

The original toilet is going and the wall between the kitchen and conservatory is too.

I don't particularly want to start making major changes, building new IC's if it at all possible so I was hoping that I could run a connection from under the stairs to the bottom of the soil stack.

Any views?

Cheers

Martin

From what I can see in the pictures you may not have deep enough drains to accomodate the longer run and therefore fall of the new drain run.

Can you let us know the difference in height from floor level in the loo to Invert level (bottom of channel in manhole) and the distance from back of new WC to center of manhole, looks about 5.0m if your drawing is to scale.

Jason

only if all the houses are on the same level, if the street slopes down to his house then there maynot ne nuch drop. From the pics the manhole only looks about 300mm deep but the manhole cover could have been below ground level.

Also the main sewer looks like 6" so the fall can be less than 4".

Jason

heh heh ok jake

btw, did you find out what the mystery pipe running through the manhole from a few weeks ago was?


ss

[quote author=supersparky  link=1127732410/0#6 date=1127761049]heh heh ok jake

btw, did you find out what the mystery pipe running through the manhole from a few weeks ago was?


ss [/quote]


ss

Yes, it was the old gas supply pipe.  I spoke to a neighbour and he told me that there had been a problem with gas leaks a few years ago and consequently the supply was changed to enter the from the front of the row of 6.  I got a little worried when cutting the pipe and ther was a slight gassy smell, and doubly so when Transco started digging further down the road  I also found the old lead water supply pipe, even more for me to "reclaim"  

Martin

Had another dig today and I think that there should be just enough room to get a small access chamber connected to the old toilet waste pipe, that way I shouldn't have to disturb the IC at all!

quick diagram and photo here http://www.engelside.co.uk/toilet1.htm

The only problem is whether there is enough room to get a plastic to clay pipe join in.

Martin