Can my builder build a concrete fence about 3 foot high over the top of a drain. He said the post and the boards aren't that heavy and only need a bit of soil underneath and the drain should stand that. i am very concerned as I stated to him that if the soil compacts with the weight of the posts it would break the drain. I cannot have wood because the banking is higher at one side than the other so needs to be a retaining fence, he also states it only needs going in about 16ins which to me for a retaining fence doesnt seem enough support. Can anyone help
Building a concrete fence over the top of a drain
- Thread starter JANS
- Start date
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Do you mean there is a manhole cover and your fence line runs across it?
Or do you mean you have a drainage pipe in the ground under the fence?
I'd be inclined to go a little deeper with the posts than 16", even for a small fence, but the gravel boards only need to sit on the surface.
Or do you mean you have a drainage pipe in the ground under the fence?
I'd be inclined to go a little deeper with the posts than 16", even for a small fence, but the gravel boards only need to sit on the surface.
No its not a manhole cover, it is a drainage pipe in the ground directly where the fence and posts would go. I am sure it wouldnt be safe with a concrete post sat on top of the drain. It would only have a tiny bit of soil for support
I would ensure that the concrete gravel boards are supported by the concrete in which the fence posts sit, rather than by the soil.
One wonders why the drainage pipe is so shallow. What's it draining? Is there a chance it could be affected by, say, digging at a later date?
One wonders why the drainage pipe is so shallow. What's it draining? Is there a chance it could be affected by, say, digging at a later date?
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Hi
I have had somebody else to come and look at the drain they said they would not recommend putting a fence post on top of the drain. He said the drain is so shallow anyway the post would need to go further down than the drain. The drain goes into a man hole cover a few metres away. It is from the toilet. He said he could get a post in at the side of the drain but further down then would put 2 gravel boards in to hold up the soil. That seems to be a better solution than what the other guy said. The other guy said it didnt need to be that deep, this guy said it needs to be a lot deeper. Will go with this last guy said he seems to know more what he is doing.
I have had somebody else to come and look at the drain they said they would not recommend putting a fence post on top of the drain. He said the drain is so shallow anyway the post would need to go further down than the drain. The drain goes into a man hole cover a few metres away. It is from the toilet. He said he could get a post in at the side of the drain but further down then would put 2 gravel boards in to hold up the soil. That seems to be a better solution than what the other guy said. The other guy said it didnt need to be that deep, this guy said it needs to be a lot deeper. Will go with this last guy said he seems to know more what he is doing.
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