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[TowerTalk] Calculating Raised Guy Height-Lengths?

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Subject: [TowerTalk] Calculating Raised Guy Height-Lengths?
From: b4e@earthlink.net (DavidC)
Date: Tue, 28 Sep 1999 10:20:56 -0400
Progress at last!  The trees have come down, the area is 
being cleared, tower-time approaches!

One of the three guy anchor points encroaches upon the yard.
I want to use a raised guy anchor at that point.

My tower is a 60 foot Rohn 45 and if I have understood the 
Rohn manual the guy points are 48 feet out from the base
and 85 feet apart around the perimeter.

Higher-math is one of my many weaknesses.  If I raise a guy 
point to 7 feet how much less than 48 feet is that guy point 
from the tower base, please?

I haven't yet found a local construction-site-surplus-source for 
I-beams but when I do how much longer than the 7 feet above
ground does the beam need to be?  I was guessing that I need
a 10 foot piece so that I may put 3 feet in concrete.  Any 
additional advice as to setting the beam properly is appreciated.

Also, for cosmetic reasons I am thinking of sliding a piece of
PVC over the I-beam and filling it with concrete.  Is this an OK
idea or do folks have better suggestions?  Here in central
Florida the wood options are limited due to termites and a
hollow PVC tube makes too friendly of a home for beasties.

Finally, does the I-beam come with attachment holes or 
will I need to find someone who can drill one?  Or is there
another way to attach the guy to it?  (I am using Phillystran
and the yard will be well fenced.  Vandalism is unlikely and
the grass is very short so fire isn't an issue either.)

Thanks! & 73, DavidC  K1YP


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