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Re: [TowerTalk] Q on guyed rotating towers

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Subject: Re: [TowerTalk] Q on guyed rotating towers
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Date: Thu, 28 Feb 2008 14:37:19 -0600
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I think what you are saying is the stength of the tower itself is not 
changed, it is simply that whatever downforce is generated from torsional 
load on a guyed tower is not present, and that such downforce is rather 
small.  I expect that force might be more useful on a pier pin perhaps.

I think Jim raises a point though in the differences that occur or may occur 
when the torsional load is arrested a single point, in this case near the 
base where the chain attaches, versus at a multiple points where guys 
attach.  I run a managed care organization, I'm not an engineer, but it 
seems the only real difference is that the actual torsional movement at the 
top of the tower may be somewhat greater than if it were guyed at several 

I'm at least glad that others have wondered about this.


----- Original Message ----- 
From: <>
To: <>
Sent: Thursday, February 28, 2008 11:56 AM
Subject: Re: [TowerTalk] Q on guyed rotating towers

Comments bottom-postedFrom: "Arthur Trampler" <>Subject: 
[TowerTalk] Q on guyed rotating towers<snip>From what I understand part of 
the strength of a guyed tower is that torsional movement is converted into 
down force by the guy wires tightening as they attempt to cover a greater 
distance (as the tower twists).With a rotating guyed tower, is there some 
sort of locking mechanism between the bearings and tower, at least in a 
given "parked" position to allow this phenomenon to occur? Otherwise it 
would seem that this benefit is lost as the guys are not attached to the 
tower, but to the bearing rings.Help me out...maybe the difference in 
strength is inconsequential or mitigated by other factors.Art, K?RO-0-The 
strength of the tower is the strength of the tower, based on the materials 
and design. LOADING on the tower comes from mass and surface area, as the 
wind works on the structure. Loads are transferred into vertical compression 
by the guy system. Torsional loading on a triangular tower indeed does add 
to the down force somewhat, but this is quite small compared to the other 
loads. Thus, a tower which rotates inside a ring-coupled guy system is 
simply relieved of whatever torsion loading might otherwise be imposed upon 
it. It is neither stronger nor weaker as a result.Make sense?n2ea

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