1960s Drains - how best to add new connection?

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Hi,

Looking for some advice on how best to add a new connection to my existing 1960s drains - and where best to put the waste stack.

I've tried to draw the layout below.

Essentially, there is a manhole cover and inspection chamber about 1.5 metres from the house. This is currently fed by two pipes. The first, (Labeled "A") a curving pipe to the left, leads from an existing toilet which i will remove. The second (Labeled "B") passes straight into the inspection chamber from a gully for waste-water, which will also be disconnected.

I am thinking i should connect new plastic pipe to the lower part of pipe B - the straight connection - at 45 degrees. This should then pass through the wall, to a soil stack just the other side.

As far as i can tell, until i take more of the the floor up, i should be alright for clearances and gradients.

If so, is this the right plan? Or am i missing something?!

As ever, would be stuck without the advice of folks on here. Really appreciate it!

Crawf
 
Last edited:
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Hmmm, not sure what happened there!

w88iaaka5


Hopefully this one works......
 
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To explain a bit more, I am intending to remove the gully, and was thinking that i then could simply connect the remaining part of the straight connection ("A") to the stack. That is what the green pipe is meant to show.

To do this, if i point the rest-bend in the right direction, it seems to me that i could then use a single flexible adaptor (http://www.screwfix.com/p/flexible-adaptor/19914) and one of these flexible connections (http://www.screwfix.com/p/adjustable-bend-0-90/14451) to make the connection to the straight bit......

The only question then is whether i also need an access chamber between the rest-bend and the new connection.
 
If you site the bend immediately outside the chamber you may get away without needing a second chamber. You are aware you need a long radius bend at the foot of the stack? If pipe 'A' is to be redundant, I would block it off at the chamber with concrete, to prevent rats using it as a hotel, and looking to make themselves a new front door somewhere along the run....
 

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