On May 9, 2006, at 8:14 AM, Cqtestk4xs@aol.com wrote:
> Without knowing the windload, it is hard to make a guess. The
> regular base
> for Rohn 25 guyed tower is 2' 8" by 2' 8" by 3' deep.
uh, 2' by 2' by 4' deep. About .7 yard of concrete.
> Rohn 25 is not designed to be self-supporting, but my guess is 2.5
> yards of
> concrete would do it.
Rohn 25 is self-supporting up to a very short height, depending on
the wind load. I don't have my catalog handy, but at 70 mph, it's
about 30-35 feet, at which point it can only hold itself up (no
margin for antennas).
Bill Coleman, AA4LR, PP-ASEL Mail: aa4lr@arrl.net
Quote: "Not within a thousand years will man ever fly!"
-- Wilbur Wright, 1901
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