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RE: Guy wire forces

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I have had occasion to design these structures in the past.  

You are obviously familiar the ASME STS 1-2000.  

You should also get the Structural Standards for Steel Antenna Towers and
Antenna Supporting Structures (ANSI/TIA 222-F-1996 (R2003)) to determine
wind forces in the guy cable.

You should also get Tubular Structures by Troitsky which is available from
Lincoln Electric.  It has a chapter on guyed flare stacks.

Normally the initial pretension on guy cables is 10% of BS.  The tension
forces will increase a lot when the flare stack is at operating
temperatures.  

Also don't forget about ice accretion loads.  You will find those in ASCE
Guidelines for Electrical Transmission Line Structural Loading, ASCE 74.

Regards,
Harold O. Sprague

-----Original Message-----
From: Michael L. Hemstad [mailto:hemstad.ml(--nospam--at)tkda.com] 
Sent: Monday, September 15, 2003 10:01 AM
To: seaint(--nospam--at)seaint.org
Subject: Guy wire forces

Can anyone recommend a good reference on guyed structures?  We have been
asked to investigate the guy wire anchorages for a pair of guyed stacks.
Our first step is to try to evaluate the forces in the guys due to
pretension and wind.

Thanks for any help.

Mike Hemstad, P.E.
TKDA
St. Paul, Minnesota
 

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