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[TowerTalk] Guy Wire Tension and Chimneys

To: <towertalk@contesting.com>
Subject: [TowerTalk] Guy Wire Tension and Chimneys
From: n7cl@mmsi.com (Eric Gustafson)
Date: Tue, 14 Sep 1999 09:28:42 -0700

Hi Bill,

Check with your local building codes.  If they were written by a
competent agency, they will not permit guying to a chimney.  If
the codes permit it, don't do it anyhow.  The preload you are
talking about is probably too much side load for a typical
chimney.  The dynamic working load can easily amount to ten times
this much in a good wind.  Chimneys are NOT usually designed to
support much more than their own loads.

Others will point you towards a tension measuring method.

73, Eric  N7CL


To: <towertalk@contesting.com>
>Date: 14 Sep 99 09:07:53 PDT
>From: Bill Jones <LWilliamJones@netscape.net>
>
>I am putting up a 50 foot Rohn 25G tower and want to guy the
>tower to a chimney in two of the three guy points.  Does anyone
>have any experience with guying to chimneys?  Each chimney is 3'
>by 2 1/2' and in excellent condition.  What thickness of strap
>should be used around the chimney?  Each would have two guys
>attached according to the Rohn catalog - each guy with an
>initial tension of 400#.  Also what is the best way to measure
>the tension of the guy wire?  Thanks in advance.

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