Avoiding blocked soakaway

Screech20 · 20 Apr 2020

morning chaps.

I’m in the process of planning my soakaway, which will take the rainwater away from the rear extension guttering and channel drains in 2 locations.

I plan on them going down just one pipe into the soakaway itself.

What do I need to put in place to stop the like of leaves and cr@p filling it up and eventually blocking it up?

Cheers

HERTS P&D · 20 Apr 2020

They all block up in the end.

Andy

^woody^ · 20 Apr 2020

A trap.

^woody^ · 20 Apr 2020

HERTS P&D said:
They all block up in the end.

Andy

Not the start or middle?

Screech20 · 20 Apr 2020

^woody^ said:
A trap.

One fitted to each point? I can’t find any info on this subject at all.

How are they accessed when layers under paving etc? Especially if a slot channel drain is used?

Thanks.

^woody^ · 20 Apr 2020

You fit a trap at the connection of the pipe to the gully/channel. This collects the deritus and you clean it out every now any again. It's the same principle as every other drain or waste pipe around the house

You could just fit a mesh grill and sponge in the drain channel outlet, but these may need cleaning out more regularly.

johnny2007 · 20 Apr 2020

I find that a trap at gulley point works.
Also, try to keep the pipework as straight as possible so to be able to rod it if needed.
After the down pipe , go with 4 inch brown pipe.
A bit overkill but worth it, trust me.

^woody^ · 20 Apr 2020

johnny2007 said:
I find that a trap at gulley point works.
Also, try to keep the pipework as straight as possible so to be able to rod it if needed.
After the down pipe , go with 4 inch brown pipe.
A bit overkill but worth it, trust me.

You would need an access chamber at the soakaway end if you were planning to rod the pipe, otherwise the end of the pipe will just get blocked up as you have nowhere to push any blockage. Or if planning to use the pull scraper (not that reliable for drains), a chamber at the start of the run.

noseall · 20 Apr 2020

Trapped bottle gullies. We never connect our RWP's straight onto bends (unless we have to).

Screech20 · 20 Apr 2020

Thanks chaps.

Do they have some kind of grill or filter to stop any crap making its way through?

My concern with the channel drain is how it would be periodically cleaned out.

Cheers

Hugh Jaleak · 22 Apr 2020

If going to a soakaway, (so no risk of drain odours coming back), you can fit a Rainwater Gulley, which will catch any leaves and detritus before it enters the drainage system, but it will need cleaning out as required. As for the channel drain, fit a sump at each outlet to collect the crud.

Alternatively, (if room), build a catch pit before the soakaway.

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Avoiding blocked soakaway

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