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Re: Joist Girders As Spandrel Beams

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    I do it all the time.  There is no real difference between the JG and the W sections, other than if you have any point loads (suspended brick veneer maybe) you need to transfer those back to the JG at the panel points.  You may also want to brace the bottom chord with the joist to prevent any out of plane loads from twisting the JG.  Send me your email again and I will send you some details that may work.
----- Original Message -----
From: Rich Lewis
Sent: Thursday, August 10, 2006 4:47 PM
Subject: Joist Girders As Spandrel Beams

I have done very little work with joist girders so I have a design question.  I am doing preliminary design on a two story office building.  I am looking at an option clear spanning about 44 feet with LH joists at 5 ft. + on center.  This is the width of the building so the joist supports are also spandrel beams.  The exterior is metal stud with EIFS or some other finish.  It may even eventually be metal stud with a brick veneer.  The studs will span from foundation to roof, bypassing the floor for vertical support, getting only lateral support.  I initially planned on using wide flange steel beams to support the LH joists.  Someone suggested using joist girders.  I can?t say I ever saw joist girders used as spandrel beams.  Usually the Wal-Mart?s or Home Depots have concrete or masonry load bearing walls where I?ve seen joist girders used.  Is it practical or feasible to use joist girders as spandrels with a curtain wall system?  What cautions are recommended if I do consider it?


Thanks for your help.