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# Re: Guyed Tower

• To: <seaint(--nospam--at)seaint.org>
• Subject: Re: Guyed Tower
• From: Christopher Wright <chrisw(--nospam--at)skypoint.com>
• Date: Mon, 2 Aug 99 18:08:42 -0500

>I have not designed a tower either but my thought on it is to model it
>by :  if the ground support is point A and the tower connection is point B
>and the cable at point A is not tangent to horizontal (very few would be)
The cable force is statically determinate and the shape falls out of the
assumption that the cable has no bending stiffness. A given weight of
cable supported between two specified points assumes one and only one
shape which you can figure out yourself. The cable tension falls out from
the end slopes of the catenary curve assumed by the cable so as to
balance the weight with the resultant force tangent to the curve at the
ends. The curve doesn't form by elastic deformation like the deflection
curve of a beam. A finite element approach would be pretty elegant. If
you used the calculated catenary as model input, you could find the
results of applied loads on the tower, however.

Christopher Wright P.E.    |"They couldn't hit an elephant from
chrisw(--nospam--at)skypoint.com        | this distance"   (last words of Gen.
___________________________| John Sedgwick, Spotsylvania 1864)
http://www.skypoint.com/~chrisw