Does anybody know about french drains?

6 replies
Found 1st Mar 2010
We are in the process of getting our drive blockpaved. The builder has found what he calls a french drain at the bottom of our drive which slopes down towards the road. At first he thought it was a damaged water pipe and i duly asked the local authority to investigate - he now seems to think its not a problem and plans on block paving directly over it. We are concerned. Is he fobbing us off? Please help if anybody can!

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6 Comments

Banned

isnt a french drain an open shaped drain?

its there to drain something, probably the rain from the garden away

sounds like a dodgy builder to me

Murielson;7992386

http://en.wikipedia.org/wiki/French_drainGoogle is your friend



+1, what google doesn't know, isn't worth knowing about! lol

i would thought covering it over would be ok as the blocks he should be using should let the rain water soak through them.

The pipe that is at the base of a French drain should be perforated or as … The pipe that is at the base of a French drain should be perforated or as we did years ago for land drains, there should be gaps between each pipe which should be set onto a bed of firm ground and the pipes should be on a fall to the drain. Whilst you should be able to ensure that there is enough fall by site, we always like the idea of rolling a marble from one end to the other! You will then need to place the pipes down and fill the trench with 0.5” (7.5mm) to 1” (15mm) sized gravel. You can leave it at that, or in addition you can cover this with sand and then turf over it. This is how a basic French drain is carried out.

Banned

walk over to them, if you hear them surrender, they are french drains

jubbyme;7993679

walk over to them, if you hear them surrender, they are french drains



Lol
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