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
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