Drainage
Author
Discussion

Chrisgr31

Original Poster:

14,065 posts

271 months

Wednesday 6th August
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My wife asked me to clean the wheelie bin at the weekend. A short while later I had lots of mucky water in the bin which I then poured down one of the drains at the bottom of a gutter downpipe. I then found the drain was blocked at or beyond the U bend.

A little later I had dug it all out

I need to raise the drain itself as part of my patio works. Is the plastic drainage pie you get now compatible with this china pipe? Or do I need a conversion piece?

smokey mow

1,278 posts

216 months

Wednesday 6th August
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You’ll need an adaptor to join them. Search for 110mm PVC to saltglaze adaptors.

LooneyTunes

8,303 posts

174 months

Thursday
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Something like this: https://www.thesafetysupplycompany.co.uk/p/9576673... (but check the dimensions!)

Metric Max

1,618 posts

238 months

Thursday
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Depending on the age of the house it's likely that the gutter is connected into a soakaway rather than the sewer.
Not a good idea to put debris into a soakaway

wolfracesonic

8,273 posts

143 months

Thursday
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Assuming the glazed rest bend is now clear and not damaged, rather than remove it and reposition it/replace it, sit one of these,



atop it (it should be wide enough not to fall down the hole) and mortar it into place. You can then slide one of these,



into it at a height to suit, you can get gulley trap risers if it’s not tall enough.

Chrisgr31

Original Poster:

14,065 posts

271 months

Thursday
quotequote all
Thanks all.

The U bend isn’t clear yet as it’s all cemented together and I didn’t have time to risk taking it all apart, cleaning it and putting it back together, especially as there was nowhere open to buy bits if anything broke! So it’s this weekends job.

It’s going to be a bigger job as I know the other end of the drain where it emerges in to a manhole is blocked. So I am going to use this opportunity to find out how far the blockage goes from the other end. I am replacing the patio that’s over it all so want to clear it before I start!

wolfracesonic

8,273 posts

143 months

Thursday
quotequote all
I will be very impressed if you can separate the rest bend from the pipe without damaging it!

Chrisgr31

Original Poster:

14,065 posts

271 months

Thursday
quotequote all
Thanks all.

The U bend isn’t clear yet as it’s all cemented together and I didn’t have time to risk taking it all apart, cleaning it and putting it back together, especially as there was nowhere open to buy bits if anything broke! So it’s this weekends job.

It’s going to be a bigger job as I know the other end of the drain where it emerges in to a manhole is blocked. So I am going to use this opportunity to find out how far the blockage goes from the other end. I am replacing the patio that’s over it all so want to clear it before I start!

hidetheelephants

30,564 posts

209 months

Thursday
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Have you tried a drain snake?

119

12,575 posts

52 months

Thursday
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I can get the garden hose round our clay gulley trap without anything on the end and on full blast.

Get a bit wet but works quite well!!

Chrisgr31

Original Poster:

14,065 posts

271 months

Yesterday (23:26)
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wolfracesonic said:
I will be very impressed if you can separate the rest bend from the pipe without damaging it!
Managed to get it all apart without breaking it

And found it’s blocked right round the U bend and down in to the main run of the drain which is also blocked. Used an attachment on the Karcher to try and clear it but failed, potentially not helped by the need to go in upstream of the blockage.

No real idea where the drains go, there’s a manhole in my neighbours garden and the three entries in to that are blocked, the one that is most likely mine is the most solidly blocked.

However it’s possible none are mine.

Problem is the main pipe is a metre deep and under the patio. So next plan is to get neighbour with a mini digger in and either dig right down uncover lots of the pipe to see where it goes then try and clear it, or just put a new drain in and drain it in to the ditch at the end of the garden which I guess is where it’s meant to go anyway.

wolfracesonic

8,273 posts

143 months

Top work, though it sounds like there is plenty more to do.

cliffords

2,661 posts

39 months

We have something similar. After much investigation I have found they are not so much as blocked ,they just lead to nowhere. They were originally put in as soakaways,rather than fully connected to a proper drain.
Over time the mud has just creaped further back up the pipe . In my case clearing them is pointless and impossible as I just drag more mud back towards me as I add water .
I am just hoping global warming and this dry spell continues. smile