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Re: Crane Beam Design using excel spreadsheet downloaded in www.aisc.org

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Thanks Charley
In the spreadsheet downloaded in www.ais.org Im using W27x94 + C15X33.9 and they get Lr = 607.47 and the reference is AISC table A-F1.1
the question is how they obtain Lr  for W27x94 + C15x33.9
and Im wondering if Lr can be solved by other method than trial and error showed in The edition of Design Guide 7 Example 18.1.3
Thanks

Ing. Angel Gomez
angelgomez(--nospam--at)megare.net.mx

----- Original Message ----- From: "Charley Hamilton" <chamilto(--nospam--at)uci.edu>
To: <seaint(--nospam--at)seaint.org>
Sent: Tuesday, June 21, 2005 11:52 AM
Subject: Re: Crane Beam Design using excel spreadsheet downloaded in www.aisc.org


Angel -

I don't understand what you're asking.  The edition of Design Guide 7
that I have shows Lr = 636 inches (Oct 2003 printing, page 55) for
Example 18.1.3 (the LRFD version of 18.1.2).

Are you trying to determine what section will have an Lr value
of 607 inches? This can be looked up in the LRFD steel manual for many sections.

Or are you asking how to implement the iterative solution in
Excel?

Charley

--
Charles Hamilton, PhD EIT               PGR and Lecturer
Department of Civil and                 Phone: 949.824.3752
    Environmental Engineering           FAX:   949.824.2117
University of California, Irvine        Email: chamilto(--nospam--at)uci.edu



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