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[TowerTalk] Guying a Universal Aluminum Tower

To: <TOWERTALK@contesting.com>
Subject: [TowerTalk] Guying a Universal Aluminum Tower
From: <john@kk9a.com>
Date: Fri, 18 Nov 2011 23:42:31 -0000
List-post: <towertalk@contesting.com">mailto:towertalk@contesting.com>
There is much debate in the towertalk archives on guying a freestanding 
tower, especially Universal Towers that you should read through.  I believe 
that adding guy wires can make it a stronger structure, but I'm not a 
mechanical engineer.  I had a very similar 70' Universal tower, except my 
top sections was homebrew with a flat bearing plate and larger than yours. 
I had the tower in Illinois and used two sets of phillystran guys wrapped 
around the leg and bracing.  I later sent most of the sections to Aruba and 
built a 50 foot tower which held 10m and 15m monobanders.  It was 
freestanding for a year and then I added one set of wimpy guys.  I did not 
use the manufacture's hardware as it was poor quality and instead I used 
stainless steel bolts.

John KK9A




To: "towertalk@contesting.com" <towertalk@contesting.com>
Subject: [TowerTalk] Guying a Universal Aluminum Tower
From: Dennis W0JX
Date: Fri, 18 Nov 2011 07:20:25 -0800 (PST)

Has anyone out there successfully guyed a Universal aluminum tower? My 
current
configuration is 30 taper, 26 st, 26 taper, 22 st, 22 taper,

18 st, 18 taper, and 14 top. It has a huge monstrous concrete base. It is 80
feet total in height and nothing else in on the tower. I had a TH6 on it for 
12
years with no problems but just replaced that with a TH-11 (a fantastic
antennas BTW) which has a 12 sq. ft wind load, considerably more than the 
TH6.
With high winds, it moves around quite a bit and I am uncomfortable with 
that.
I am thinking of putting two sets of guys on it to stabilize the movement
without shifting a lot of the load to the guys. The tower is protected in 
most
directions by mature trees that are taller than the tower and that break the
force of the wind quite a bit.


I have seen these towers with a set of rope guys at the top to minimize the
swaying but I think it was done without any real thought to it.

73, Dennis W0JX/8
Milan, OH 

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