[Greenbuilding] Fence posts--gravel or concrete

Kat molasses at q.com
Mon May 9 14:22:47 PDT 2011


Are post bases really that expensive?  Or is it that they're ugly?  I've 
always wondered why people set fence posts straight into concrete.

Here in Portland, OR, we haven't had problems with our fence posts 
breaking apart the concrete (it doesn't freeze a lot here), but several 
of the posts are rotting where they enter the concrete.  When it all 
finally falls over I'm building myself a cob fence with a little roof, 
and the heck with posts.

-Kat

Benjamin Pratt wrote:
> I promised to help my friend put in a fence this summer. I was
> recommending that he use gravel, or class 5 crushed gravel, to set
> them in, rather than concrete. From my experience, concrete breaks
> apart anyway when the post swells. I also think the posts would rot
> more slowly in gravel, especially if there is a lot of gravel in the
> hole underneath the posts. But he is skeptical. Do you agree with me?
> Also, how deep should he put them in?  This is in minneapolis, MN.
>
> -Ben
>
> PS. No , he will not consider using a GFX  ;-)
>
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