At 04:45 PM 1/15/2006, Phil Camera wrote:
>Don't take this personally, but IMHO screw anchors are only to be used
>for a temporary installation.
>A 70 ft. tower is a sizable structure and needs adequate anchors,
>meaning, anchors that have concrete holding them in place.
>Yes, you should be concerned about the anchor in question, as well as
>If you get Zero rain, and I mean none, then your anchors may last. But,
>if your location gets any kind of rain, then that soil can become very
>soupy and won't hold worth squat.
>I'd seriously rethink your installation. Gd Luck and be safe, Phil KB9CRY
Properly selected and installed screw anchors are a suitable long term
solution. They're used to anchor utility poles, for instance. However,
like many things, they DO require appropriate engineering. It's not just a
big old hunk of concrete in the ground with a bolt sticking out of it.
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