[TowerTalk] Concrete anchors

[Keith Dutson]

What is guting radius?

I agree with Bill.  Tension on lower guys is less, as specified in Rohn
catalog.

Keith NM5G

-----Original Message-----
From: towertalk-bounces at contesting.com
[mailto:towertalk-bounces at contesting.com] On Behalf Of Cqtestk4xs at aol.com
Sent: Wednesday, September 22, 2004 2:31 PM
To: mel.martin at axare.mail.net
Cc: TOWERTALK at contesting.com
Subject: Re: [TowerTalk] Concrete anchors

I'm a little bit skeptical of this issue...

a typical tower 120'  tower using 80% radius for guying at 3 points is going
to have a guting  radius of 240% for the bottom set of guys... at which
point tension is  getting close to the max at the bottom set of guys. One
would expect that the  tower would easily handle this tension............de
VE2DC ______________________________________________________________________
 
......but, if you check your Rohn book, you will notice the lower guys are
usually one step down in size.  If the upper ones are 1/4, the lower  ones
are 3/16.  Therefore, less tension when tightening the guys on the
bottom....less pull.
 
Also on taller towers, when two different anchor points are necessary, the
lower bank goes back to approximately 80 per cent of the height of the
highest member of the lower bank, AND they are also one size  smaller...less
pull.
 
I'm no engineer, but it does make sense.
 
Bill K4XS
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