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Andrew McKay
 
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Default How do I make concrete?

On Mon, 14 Jul 2003 01:19:26 -0230, Terry
wrote:

Here, where winter freezing of the ground, depending on amount of
snow cover, can be a problem it is recommended that the cement
not be brought up to ground level. Also that it not be in the
shape of an inverted cone.


I've always believed in lining the bottom of the post hole with a
couple of centimetres of gravel (fine stone), and concreting on top of
that.

The reason for that approach is to give the bottom of the fencepost,
and the concrete collar, a chance to be mounted on top of material
which isn't soaked in water - the gravel acts as a small soakaway.

If the post has a ready supply of water available to it (which it will
if it joins damp earth) then the water will gradually migrate into the
post which will eventually fail due to it being soggy.

Works for me anyway

Andrew

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