Tue, 19 Dec 2023 04:03:28 +0000 http://www.greenbuildingforum.co.uk/newforum/ Lussumo Vanilla 1.0.3 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=18033&Focus=304344#Comment_304344 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=18033&Focus=304344#Comment_304344 Wed, 22 Nov 2023 13:48:17 +0000 Rex
The land for my house has a fall of around3-4 meters, front to back over about 50 m. Rainwater from the roundabout in front tends to drain onto my land a prior to building, sort of 'flooded' the front garden.

During the build, I installed a sump on the verge and took a underground drainage to the woodland at the rear of the garden. Unfortunately, I did not take photographs. Although buried on my land, the actual outlet was on the surface in the woods so that water could drain out. But 1,2, 3, or 4 meters from my boundary? Beats me?

Nowadays, the water does drain away, and then the flooding starts again. I think the outlet in the woodland has become blocked with leaves, twigs and perhaps 'someone' has made a home there. I would like to find the outlet but uncertain where it is, and it is certainly now covered with brambles, fallen branches, etc.

My question is, what would be the best way to find the outlet without actually clearing everything and digging where I 'think' it may be?

Thanks and toodle pip]]> http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=18033&Focus=304346#Comment_304346 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=18033&Focus=304346#Comment_304346 Wed, 22 Nov 2023 14:16:21 +0000 Peter_in_Hungary If the pipe was on the surface in the woods then whilst it may be blocked it should not be blocked with much, the pipe also could have collapsed somewhere along its length.
If you can't find the end with a cursory look (I assume this has been done) then I would beg, borrow or even hire enough drain rods to shove down the pipe to a) make it easier to find the other end and b) to ascertain whether or not there is a blockage mid way.]]> http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=18033&Focus=304348#Comment_304348 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=18033&Focus=304348#Comment_304348 Wed, 22 Nov 2023 15:30:30 +0000 djh http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=18033&Focus=304352#Comment_304352 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=18033&Focus=304352#Comment_304352 Wed, 22 Nov 2023 17:09:45 +0000 revor http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=18033&Focus=304353#Comment_304353 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=18033&Focus=304353#Comment_304353 Wed, 22 Nov 2023 17:30:47 +0000 Peter_in_Hungary
It might be a bit late in the year but I would expect to see a difference in the vegetation where there is additional water to that of the surrounding area.]]> http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=18033&Focus=304355#Comment_304355 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=18033&Focus=304355#Comment_304355 Wed, 22 Nov 2023 20:11:28 +0000 djh Posted By: Peter_in_HungaryDye will only work if the water can be seen on the ground - in which case I would expect to see surface water or at least a very damp patch which of course would indicate the drain outlet anyway.I think the chance of spotting a damp patch when it's raining are minimal I think a colour change makes it much more obvious.]]> http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=18033&Focus=304359#Comment_304359 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=18033&Focus=304359#Comment_304359 Wed, 22 Nov 2023 22:25:21 +0000 Rex
Not really possible to see any dampness around the exit as after 13 years, there is so much growth! Additionally, the exit area was always damp / wet. But I do like that idea of a coloured liquid or dye. Will investigate that.

Tonight, I wondered about smoke. Put one of those smoke bombs into my wet/dry vac, use the blow side of the vac and 'blast' the smoke into the pipe. Don't know if it would go 50m +.]]> http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=18033&Focus=304361#Comment_304361 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=18033&Focus=304361#Comment_304361 Thu, 23 Nov 2023 08:39:57 +0000 GreenPaddy
I would dig a slit trench on your own land to find the pipe, approx half way, open the pipe (cut it in half). Try to rod from the top (road end), and then rod again from the cut midway section through to the woodland outlet.

Start with no rodding piece on the rods, just the rods themselves, to make sure you can actually get through, then possibly repeat with the rod head piece to clear it out. Remember to rotate the rods clockwise continually, to keep the jointing threads locked. I know that because....

The coloured water test is also a good one, once you've rodded it. Use food colour, that may be knocking about in the kitchen cupboards. Use the hose to get plenty of water flowing.

Finally, add a small access chamber (320mm diam), so you've got a future rodding point, and sludge removal at the half way point.]]> http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=18033&Focus=304363#Comment_304363 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=18033&Focus=304363#Comment_304363 Thu, 23 Nov 2023 09:48:51 +0000 Peter_in_Hungary
I have a land drain pipe which I clean with a length of 25mm PE water pipe with the end rounded with the help of a heat gun and I connect a hose pipe to the outboard end so that the land drain pipe was flushed out. (Best done from the down hill side). I've not had much success with traditional rodding as the corrugations and structure of the pipe made this v. difficult.

The bad news is that the pipe I am citing worked fine for 10 years or so but once it silted up flushing through appears to be a 2 -3 year job. I guess flushing only removes some of the silt and it never gets back to new state.

Over here there are drainage contractors who come along with their van which has a hose with various ends connected to a high pressure pump which they use to blast blockages out but the expectation is that once 'liquefied' the blockage runs down the drain, this might work, you would have to talk to the contractors. The same people have cameras that can inspect the pipe internally and thus locate blockages or other failures.

In your place I would start with the 25mm PE water pipe option and go from there. (garden hose is not rigid enough)]]> http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=18033&Focus=304366#Comment_304366 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=18033&Focus=304366#Comment_304366 Thu, 23 Nov 2023 11:05:38 +0000 Rex
I'll try to find the end first then probably a dye flow test to check for any upstream blockage.

Someone did suggest fire the leaf blower down the pipe and both listen for the sound and/or air at the woodland end.

Am pretty sure on my side of the fence, it is only about 30cms deep as that area was 'kinda' designated as a path.

Thanks for all the suggestions, extremely helpful.]]>