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Re: [TowerTalk] minimum guy radius

To: towertalk@contesting.com
Subject: Re: [TowerTalk] minimum guy radius
From: Jim Lux <jimlux@earthlink.net>
Date: Thu, 31 Oct 2013 06:18:57 -0700
List-post: <towertalk@contesting.com">mailto:towertalk@contesting.com>
On 10/30/13 12:27 PM, Greg Kozisek wrote:
235' tower with anchors at 100', three guy levels. Ever heard of such a thing? 
Is it possible? Oversized or undersized wires? I haven't seen it, but it sounds 
bizarre to me.

Lots o' tension in the guys under load, but hey, anything is possible.
23 degrees between guy and tower, so the tension in guy is 2.5 times the horizontal load. Compared to the more usual 45 degrees and 1.4:1 ratio between horizontal load and tension

If you think about it, there's sort of a continuum between "big heap of dirt" to "pyramid" to "guyed tower" to "self supporting tower". It's all about how you handle the tension loads on the upwind side, and the compression loads on the downwind side.

And not all the designs are successful.. sometimes the loads are a bit too high (Pyramid at Meidum), or exceed the design limits (Washington monument). Sometimes it works ok (Eiffel tower, CN tower)
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