In a message dated 5/27/01 5:26:20 AM Pacific Daylight Time, w5kp@swbell.net
writes:
> s there any reason why a person should use a Rohn 5' base section to bury
> in concrete versus using a standard 10' section buried in concrete? As far
> as I can tell from my Rohn catalog there's no physical difference in the
two
> except for length. Does anyone know of a difference? My reasoning was that
> if I used a 10' section instead, I would have about 6' of known straight
leg
> to work with in tweaking it to perfectly vertical, versus having to bolt on
> a piece on top of the base section to work with, and dealing with the
> inherent uncertainties of the bolted joint, verticalness-wise.
It's 5 of one and 10 of another. If you use a 5-footer, you wind up with
all complete 10 foot sections when it's time to remove the tower. If you use
a 10-footer in the concrete, you've got to chop it off and you wind up with a
tower 5 feet lower next time you put it up.
Don't forget to put 4-6" of gravel in the bottom of the hole and set the
section directly on the gravel so the legs will drain of water condensation.
Cheers, Steve K7LXC
Tower Talk
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