[TowerTalk] Guy Anchor Failure

[Pete Smith]

At 10:02 AM 1/2/01 EST, Tower2sell@aol.com wrote:
...>
>Some people have forgot their science today. If you have a concrete anchor 
>underwater, it has less uplift capacity. To figure the submerged capacity
you 
>subtract 62.4 lb/cubic foot from the volume/density of the concrete and soil 
>mass. This is about half the capacity of a  normal dry installation. This 
>means an anchor designed for dry conditions may pull out when submerged.

Sure, but a concrete anchor 1/2 cubic yard in volume (13.5 cubic feet)
still weighs over 1000 lb when completely submerged.  I'd a helluva lot
rather have that much uplift capacity than the submerged weight of a screw
anchor.   

73, Pete N4ZR
Contesting is!

The World Contest Station Database 
is back up and running at
http://www.qsl.net/n4zr 



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