No, EHS guys are not stretching to give this effect.
The guys are not tightened to make them straight, they are tightened
to present a certain designed tension on the tower.
If you sight down them, you will see that they are not pulled
"straight-line" taut. They have a certain "bow" to them. This is a
function of the weight of the guy pulling down in the center against
the design tension trying to pull it straight, and the gradual loss of
leverage to lift the middle by pulling as the line becomes straighter.
The higher the tension, the less the bow, the smaller the tension, the
more the bow.
The higher the guy point the more obvious the droop because of the
length of the guy, both adding to the weight and to the opportunity
for droop.
Pushing on the tower away from the guy adds tension to the guy, and
lessens the "droop". AND the tower moves away from the guy point by
the amount given up by the lessening of the droop.
This will give you the inches drift in the wind that seems like feet
when amplified by the tower top pucker factor.
73, Guy.
----- Original Message -----
From: <W2fca@cs.com>
To: <towertalk@contesting.com>
Sent: Friday, April 18, 2003 8:21 PM
Subject: Re: [TowerTalk] Guyed self-supporters (was "Concrete
suggestions")
> In a message dated 4/18/03 13:12:19 Eastern Daylight Time,
> olinger@bellsouth.net writes:
> << I have been at the top of guyed towers, and my own self-supporter
in high
> winds, and the movement in the wind at 100' on a guyed tower will
take your
> breath away. I never have felt that at the top of the Trylon. It
simply does
> not move like a guyed tower. >>
>
> Does that mean that on a 100 foot tower guyed with 3/16 EHS at the
> recommended tension that those guy wires will be stretching on the
order of
> several inches or more?
>
> Frank
> W2FCA
> _______________________________________________
>
> See: http://www.mscomputer.com for "Self Supporting Towers",
"Wireless Weather Stations", and lot's more. Call Toll Free,
1-800-333-9041 with any questions and ask for Sherman, W2FLA.
>
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