You might ask Stone Phillips; he was an anchor...
73,
geo - n4ua
> -----Original Message-----
> From: towertalk-bounces@contesting.com [mailto:towertalk-
> bounces@contesting.com] On Behalf Of Patrick Barkey
> Sent: Monday, August 13, 2007 1:58 PM
> To: towertalk@contesting.com
> Subject: [TowerTalk] Strength of Screw-in Anchors in Rocky Soil?
>
> Does anyone have any data or insight about the holding power of screw
> in anchors in rocky soil? My experience with the big ones (that use
> a power auger to install) in the clay of Indiana was very good. But
> here the soil is of much poorer quality and full of rocks and
boulders.
>
> You can still get them in, but I was wondering if I shouldn't trust
them
> as much?
>
> I am talking about the anchors with a 10-12 inch helix.
>
> - Pat
> N9RV/7 near Missoula, MT
> _______________________________________________
>
>
>
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