Can anyone help figure out a route for this drain?
- Thread starter Naknah
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Sorry, perhaps I should have wrote 'that' bend.
Strictly with drainage, pipe runs should be kept straight, and there should be access at changes of direction - a chamber normally. The over-riding principle is that changes of direction are potential blockage points.
But it's sometimes possible to design what are called 'slow' changes on direction (as under your new kitchen) which won't be a potential block point.
It's also sometimes permissible to change direction via a T or Y junction as long as you can get a rod in to deal with any future blockade - so not always a chamber.
But your situation would need a chamber either inside or outside the extension because of the angles involved.
Strictly with drainage, pipe runs should be kept straight, and there should be access at changes of direction - a chamber normally. The over-riding principle is that changes of direction are potential blockage points.
But it's sometimes possible to design what are called 'slow' changes on direction (as under your new kitchen) which won't be a potential block point.
It's also sometimes permissible to change direction via a T or Y junction as long as you can get a rod in to deal with any future blockade - so not always a chamber.
But your situation would need a chamber either inside or outside the extension because of the angles involved.
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There is a manhole outside the extension. With a 90degree bend you could jet/CCTV from the manhole to your downstairs toilet and clear any blockage.
If there was a fault on the pipe which needed digging up, it would need digging regardless of any internal chamber.
If there was a fault on the pipe which needed digging up, it would need digging regardless of any internal chamber.
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In the approved documents they just require all parts to be ridable roddable, not that the access has to be at the bend or junction itself. Our plans were approved where the junction under the house is roddable from a chamber just outside, which is similar to what you're suggesting.
In your garden or the neighbours? Was the drain run your own, or a shared public or private run?
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The drain run is our own and a new one to replace the old as we built where the old ones were. The old and new inspection chambers are drawn on next doors property but it's actually the drive between the houses not a garden as such. We only own half the drive on the deeds but can drive on each other's half.
In fact the builders put the new ic on our side in the end, but the original chamber is mostly on their side.
If the neighbours had been funny about it, it would have been OK as we were only building a metre from the boundary So we could have wiggled it into the old run along the gap. But straight is better.
Sounds like a public drain then if it's got joint use, and in which case access is not a problem for the water company.
When you have no access from within your own property, to your private own drains, then you can't rely on access via other property, and need your own address points for clearing blockages.
When you have no access from within your own property, to your private own drains, then you can't rely on access via other property, and need your own address points for clearing blockages.
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The new part doesn't have joint use, but in the end it wasn't done as drawn on next doors property. But even then they'd struggle to stop us using the cover to unblock things.
The only thing the water company were interested in was the depth of foundations relative to the actual shared drain.
The only thing the water company were interested in was the depth of foundations relative to the actual shared drain.
But the junction does. And where is that junction?
Any possibility of taking the drain out through the L/H wall shown on the drawing to put the chambers outside?
BEar in mind that washing machines etc are around 900mm high, the discharge pipe must come up (if it doesn't exit at the top of the back panel) so the washer can fill. Two steps are abou 300mm so you'll still have height to ensure some part of your discharge pipework is above toilet bowl water height
naknah can you please post a more zoomed out pic showing all your boundaries? You said your house was L shaped with the implication that you're filling in the L but the plans show a cavity wall that I'd have expected to be internal if it was infill..
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Sorry I didn't draw it out, basically it was previously my external soil stack then diagonally to the shared manhole on next doors half of the drive.
Now we built where the stack is, and it was drawn as our internal stack in a similar place, to a T junction under our house with the new kitchen drainage, directly through to their half of the shared drive and a bend with a new chamber on a 90 degree bend going directly back to the original chamber also on next doors land.
So a private T back roddable only from next doors land.
In the end the builder squeezed the new chamber on our half of the drive which in turn runs to the original main chamber connection on next doors land.
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