Silt traps any expierence/ recommendations

barnaman

Doing drainage or was until weather hit! Water seems is silty; its taking water from alot land incuding few neighbours . Thinking using a couple silt traps to avoid pipes blocking. Decent flow in winter but less so in summer. Wondered about any thoughts. Lad doing drainage not a drainage specilist. Trying to avoid sinking any more money into this too!

Base price

barnaman wrote: »

Doing drainage or was until weather hit! Water seems is silty; its taking water from alot land incuding few neighbours . Thinking using a couple silt traps to avoid pipes blocking. Decent flow in winter but less so in summer. Wondered about any thoughts. Lad doing drainage not a drainage specilist. Trying to avoid sinking any more money into this too!

I remember reading something on here about silt traps last year. I think it was in connection to under yard piping but I could be wrong. From memory it had to do with concrete aprons around outdoor cubicles ??

barnaman

Sump type like you are talking about more common.

http://www.riverdee.org.uk/projects/identifynovelmethodsreducingdiffusepollution.asp

The type on that what I am on about; pics at the bottom and simialar drain to mine; which also has a flow.

barnaman

I want to catch silt in spots before goes through pipes. part open part piped drain.

Markcheese

Can you dig out a sump or pond, that the run off water can drain into ... and pipe out of ... but if you dig a steep sided pit you'd probably need to fence it securely ...

Greengrass1

This is completely wrong time if yr to be doing drainage. There will be water everywhere. Summer is only time to do it as you'll find the true cause of the wet spot

pedigree 6

This might apply to you maybe not. I got land drained here (about 5 acres) the drains were dug 6 feet down piped and stoned and the stone was raised up to springs or wet spots to get the water into the pipe. Anyway all the covered drains emptied out in one pipe at the open drain. This meant that there's always water flowing through the pipes and it never gets a chance to block with silt, dirt, etc. This field is now one of the best fields on the farm and before if you walked in it you'd get stuck and the rushes would be over your head.

Edit : the work was done in the summer time. It had to be even the tracked digger would get stuck otherwise.

barnaman

pedigree 6 wrote: »

This might apply to you maybe not. I got land drained here (about 5 acres) the drains were dug 6 feet down piped and stoned and the stone was raised up to springs or wet spots to get the water into the pipe. Anyway all the covered drains emptied out in one pipe at the open drain. This meant that there's always water flowing through the pipes and it never gets a chance to block with silt, dirt, etc. This field is now one of the best fields on the farm and before if you walked in it you'd get stuck and the rushes would be over your head.

Edit : the work was done in the summer time. It had to be even the tracked digger would get stuck otherwise.

Thanks Pedigree. Yeah its completly wrong time and this is wet spot. Digger had to leave a bit too wet. Had to breast hedges and take some trees out as part of work so could only do it now. Was waiting all Sept for this guy to turn up .. Contractors! Good tasty guy though

barnaman

Pdigtee what it cost you in stone? Gone through few k on stone here and just started.

pedigree 6

barnaman wrote: »

Pdigtee what it cost you in stone? Gone through few k on stone here and just started.

I couldn't tell you now it's a few years since I did it but I think it took about 5 or 6 lorry loads of stone. Now the drains were dug narrow so there wasn't much room to walk in them so it wouldn't take an awful amount of stone. But as I say if they came across a spring or an old box drain they brought the stone up to it. Now different contractors drain different ways and not all soils can be drained the same way. When I had the contractor in here the days were passing by and I thought i'd never get rid of him but he knew what he was doing and was never idle and did a brilliant job. It was cheaper than buying land and I wouldn't have a hope of buying land beside me, so pleased with the job. Good luck with yours. You were asking about a silt trap no matter what silt trap you put in it will have to be cleaned out every now and again.

pedigree 6

Also when they were digging the drains they were using a laser level to make sure there was a fall all the way on the drainage pipe. At the end where the pipe was going out to the open drain they put a 20ft wavin sewer pipe. When the drains were covered back in I sprayed off the field with roundup. Then I waited a year for the drains to settle (as the clay will sink a bit). Then I sprayed again to get rushes and weeds that came back.
Oh and don't forget about the surface water. There was a hollow in mine with peat and a very soft bottom, so after I ploughed and picked the stones off I got a digger back and pulled off the peat and black soil and put the stones back in where the hollow was and covered it back over with the peat.
Then there was a bit of a bank at the open drain so I pulled all that back up the field to make sure there was a fall all the way to the open drain.
Then I harrowed and levelled the ground with a land leveller and sowed and rolled.