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Posted by willshak on June 17, 2007, 11:36 am
on 6/17/2007 9:51 AM Joe said the following:
> I'm having a section of new vinyl fencing put up.
> Straight run, nothing fancy - about 50 feet. The
> manufacturer is "Country Club Vinyl".
>
> The fence company said they put their posts 3'
> under grade (the posts are 6' tall above grade).
> And use concrete around the posts.
>
> Now from reading another thread on concrete and
> fence posts (albeit for wood ones). Is the best
> way to have them do a "quality" install, request
> they -
>
> (a). pre mix the concrete OUTSIDE the hole
> (b). have them put some gravel in the hole first,
> then the concrete
>
> This installation is in NJ southern ocean county.
> relatively sandy soil.
>
> What about "frost heave" ? should there be some
> specific forms to make the concrete a certain shape?
> (say an upside down cone with larger end facing
> down).
>
> No contracts signed yet and I want to make sure I
> spec out the best way for them to do do it.
>
> Any suggestions/advice on "best practices" to have
> it done the right way ?
>
>
>
>
>
I am in NY and my professionally installed posts (4" x 4" wooden PT) are
3' deep and have no concrete except for the corners and gate posts,
which were poured dry some 20 years ago. I wouldn't expect yours to
frost heave any more than mine do, which is negligible, so I don't see
the need for conical shaped holes.
Just a suggestion; I don't know how those pvc posts are constructed, but
if they are hollow 4" x 4"s, I would stuff a 4" x 4" wooden post inside
before installation. When I replaced the wooden picket fence around my
pool, I left the wooden 4x4 posts installed, and just replaced the old
wooden fencing with vinyl. After installation, the 2" x 3" x 8' plastic
rails were not very sturdy and would bend easily when leaned upon. I
removed them all and filled them with 2" x 3" studs which made a big
difference in their sturdiness.
--
Bill
In Hamptonburgh, NY
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