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Re: [TowerTalk] Q on guyed rotating towers

Subject: Re: [TowerTalk] Q on guyed rotating towers
Date: Thu, 28 Feb 2008 17:56:17 +0000 (GMT)
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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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