Michael Goins wrote:
> It is not limestone. It is a rock shelf. I have limestone here in
> places, but there are tremendous boulders and several huge rock
> shelves. It is in a rock shelf that is absolutely solid, not porous
> like limestone.
>
> Guys, I really appreciate the help.
>
> Michael Goins, k5wmg
> Professor, Writing
> University of Texas at San Antonio
>
I would still create a base plate with some all thread 1 - 1.5" diam bolts
and drill the holes thru the base plate and into the basalt or whatever you
have... about 3' below the base of your factory form. that would make for
about 5' to 6' bolts and place those bolts about 3" beyond the three uprights
of the tower. if you have the tower base plate, I would have a welder burn
holes for the bolts and follow my previous suggestions. I did not get a base
plate with my HG52 so I bought one and had a sign company do all the metal
work. my concrete base is only about 3'x3'x3' and like you, will lower the
tower to its 20' height in case of hurricane or similar.
73
chas
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chasm@texas.net k5dam Houston, TX
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