I'm hoping I can get some advice about my drains. I'm adding a bathroom to my property and I need to fit a new soil stack next to an existing rainwater downspout. There is a driveway made of concrete slabs running along side the house and beside the drain, I took one of the 3' x 2' slabs up so I could investigate. The pictures below show the current layout of the drain - the downspout feeds into a gully trap and then connects via a clay dropshaft into a combined rainwater/foulwater sewer. The sewer branch it drops into is around 2.5/3 meters below ground level, and is shared.
Current layout
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I've drawn up a plan of what I propose to do but space is a bit tight. I'm worried that I won't have enough room to fit the rest bend, the y joint and the rubber connector in the space available (approx 1 meter between the house and the clay pipe end I'd be joining on to). Do you think there is enough space to work with? Can anyone think of an easier way of adding a rest bend and rainwater collector/trap in that space?
Proposed layout
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Current layout
View media item 95384 View media item 95383 View media item 95381
I've drawn up a plan of what I propose to do but space is a bit tight. I'm worried that I won't have enough room to fit the rest bend, the y joint and the rubber connector in the space available (approx 1 meter between the house and the clay pipe end I'd be joining on to). Do you think there is enough space to work with? Can anyone think of an easier way of adding a rest bend and rainwater collector/trap in that space?
Proposed layout
View media item 95382