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Anti-seep collar for critical slopes

Anti-seep collar for critical slopes

Anti-seep collar for critical slopes

(OP)
Has any one used anti seep collars with water main on steep slopes? If so, what spacing did you use, and for what slopes?

I have a site with 1 on 8 (12% or so) slopes, and am considering specifying anti-seep collars. I figured I would have them placed top-to-toe the same way silt fence is placed, but I am interested if anyone has experience with this.

Thanks
Sean

RE: Anti-seep collar for critical slopes

It is a good thing to consider Sean.  I normally use clay dams in the trench.

BobPE

RE: Anti-seep collar for critical slopes

If you are using a concrete 'collar' for the anti seep dams and anchor them to the pipe, it will also help keep the mainline in the same position on the hill. Like using an anchor to hold the pipe up the slope.

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