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 Post subject: Drain repair
PostPosted: Tue Mar 10, 2015 7:55 pm 
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Location: London Borough of Kent
Drain novice here, so looking for some advice. I think we may have a drainage expert or two on here.

I had a wet patch appear in a field last summer. Now I've got a digger I thought I would have a little dig to see what was going on. I easily found a solid clay pipe in sections which was pretty much blocked solid. This runs north (ish) to south (ish) A little further on towards the stream this pipe terminates when it meets a smaller diameter clay pipe running east (ish) to west (ish). This is also blocked solid.

I dug back 10 meters or so uphill and found there the pipe was mainly clear.

Can I replace the clay pipe with plastic (perforated?) and run it straight on heading south (ish) past the smaller pipe and on to the stream which is another 30 odd meters beyond?
Should I backfill this with gravel?

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 Post subject: Re: Drain repair
PostPosted: Tue Mar 10, 2015 8:05 pm 
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Location: On the beach!
If I had my way the 40mm gravel would be come up to surface level on backfill.
Dont see why you can't go straight on, if, as you say the East West drain you cross over is not carrying anything.
As long as you have the fall you need.

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 Post subject: Re: Drain repair
PostPosted: Tue Mar 10, 2015 8:09 pm 
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Raggy wrote:
If I had my way the 40mm gravel would be come up to surface level on backfill.
Dont see why you can't go straight on, if, as you say the East West drain you cross over is not carrying anything.
As long as you have the fall you need.

^^^ That.
If you don't use enough stone, you may as well position the coils of pipe in your yard and then insert them up your arse.
They will be more effective.

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 Post subject: Re: Drain repair
PostPosted: Tue Mar 10, 2015 8:18 pm 
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Thanks, better get some pipe and gravel ordered then.

If I get time tomorrow I may dig back some of the smaller pipe to see where the blockage starts in that run.

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 Post subject: Re: Drain repair
PostPosted: Wed Mar 11, 2015 1:51 am 
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Location: Littlehay
Have you tried turning it off and then back on again?

Ffuk it, wrong thread!!!!!!! :!:

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 Post subject: Re: Drain repair
PostPosted: Wed Mar 11, 2015 9:28 am 
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Perforated or non- perforated pipe? :scratch:

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 Post subject: Re: Drain repair
PostPosted: Wed Mar 11, 2015 9:34 am 
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si-mate wrote:
Perforated or non- perforated pipe? :scratch:


Where are you planning on shoving it???????? :o

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 Post subject: Re: Drain repair
PostPosted: Wed Mar 11, 2015 9:40 am 
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si-mate wrote:
Perforated or non- perforated pipe? :scratch:

For what ? Drainage or ducting ?

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 Post subject: Re: Drain repair
PostPosted: Sun Jan 03, 2016 12:08 am 
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Location: Location:Location
Jet the old pipes

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 Post subject: Re: Drain repair
PostPosted: Sun Jan 03, 2016 12:37 am 
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We use twinwall for all drain repairs now and find it better to use than coils of pipe and as said stone it nearly to the surface .
A lot of the old tile drains here were covered with straw to keep the fine silt out and jetting them is no long term solution as the straw is fairly well gone , having said that even after 50 years its surprising how much can still be seen


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 Post subject: Re: Drain repair
PostPosted: Sun Jan 03, 2016 12:57 am 
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defender wrote:
We use twinwall for all drain repairs now and find it better to use than coils of pipe and as said stone it nearly to the surface .
A lot of the old tile drains here were covered with straw to keep the fine silt out and jetting them is no long term solution as the straw is fairly well gone , having said that even after 50 years its surprising how much can still be seen

Now I except I could be wrong here but twin wall is solid sides, I normally use it for gateways etc.
If you use it for field drains how do you get the water into it, you are doing the drainage via the stone above it, you would be better just to put the stone in and save the cost of the plastic hole that doesn't do anything.


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 Post subject: Re: Drain repair
PostPosted: Sun Jan 03, 2016 1:05 am 
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Tel wrote:
defender wrote:
We use twinwall for all drain repairs now and find it better to use than coils of pipe and as said stone it nearly to the surface .
A lot of the old tile drains here were covered with straw to keep the fine silt out and jetting them is no long term solution as the straw is fairly well gone , having said that even after 50 years its surprising how much can still be seen

Now I except I could be wrong here but twin wall is solid sides, I normally use it for gateways etc.
If you use it for field drains how do you get the water into it, you are doing the drainage via the stone above it, you would be better just to put the stone in and save the cost of the plastic hole that doesn't do anything.

twinwall comes in both solid and perforated , the perforation slots are better than waving in a lot of pipe and smooth inside so it don't silt in the corrugations , if the bottom of the trench isn't the best it will stay straighter than waving will . I don't use any waving unless to repair smaller drains


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 Post subject: Re: Drain repair
PostPosted: Sun Jan 03, 2016 9:03 am 
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dust n diesel wrote:
Jet the old pipes

Which is great if you have nothing to do for a few days.

Jetting is great if you jet every 2/3 years but to solve a problem which hasn't been jetted is normally a waste of diesel.

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 Post subject: Re: Drain repair
PostPosted: Sun Jan 03, 2016 5:20 pm 
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Location: E Herts
Lord Muck wrote:
dust n diesel wrote:
Jet the old pipes

Which is great if you have nothing to do for a few days.

Jetting is great if you jet every 2/3 years but to solve a problem which hasn't been jetted is normally a waste of diesel.



As any fule no, jets use A1 not diesel.

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 Post subject: Re: Drain repair
PostPosted: Sun Jan 03, 2016 7:27 pm 
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Location: south Suffolk
Flintstone wrote:
Lord Muck wrote:
dust n diesel wrote:
Jet the old pipes

Which is great if you have nothing to do for a few days.

Jetting is great if you jet every 2/3 years but to solve a problem which hasn't been jetted is normally a waste of diesel.



As any fule no, jets use A1 not diesel.



Oh I'm not so sure. HMS Zulu had two Bristol Proteus gas turbines, and they'd run on AVCAT, AVTUR, domestic diesel, and domestic central heating oil. FFO as well as long as it was pre-heated. They were a bit dodgy to start though, and everyone had to be cleared off the upper deck first. From the safe side of a bit of steel plate and armoured glass there was an almightly "whoomf" and a flash. Apparently from some distance away it looked like the ship had sustained a direct hit. The steam boilers running off the same fuels were a lot better behaved.


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