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RE: Guyed Tower

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I am not an expert but using a computer program to model a guy has not been 
satisfactory unless the program is a high end performer.  I have found that 
use of Roark and other hand analysis techniques to be accurate for simple 
systems and was able to verify the loads and sags in the field with 
instruments. I have used pins at both ends of the cable.  I believe the 
statics and not the "computer" when it comes to cables.  The problem imho 
is that most software member models will not allow the user to create a 
pure cable and looks for a non zero number to place in its stiffness matrix 
where a cable needs a zero placed. (flexure)  imho
Bob Hanson, SE

-----Original Message-----
From:	SONSUR2(--nospam--at)aol.com [SMTP:SONSUR2(--nospam--at)aol.com]
Sent:	Tuesday, July 27, 1999 7:29 PM
To:	seaint(--nospam--at)seaint.org
Subject:	Guyed Tower

I am analyzing a Guyed tower using computer program. Need somebody's expert 
opinion.
At the point where Guy cables are attached shall I use as a pin connection 
or
a spring joint, also what about at ground where the cables are anchored. I 
am
getting quite different results
Thanks in advance