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RE: Rigid diaph. analysis with diagonal walls

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Take a look at the shearwall portion of IES's Analysis Group. If I'm remembering correctly, you can evaluate a rigid diaphragm with skewed shear elements.
Frank Glazewski

From: Joseph R. Grill [mailto:jrgrill(--nospam--at)]
Sent: Tuesday, March 11, 2008 10:57 AM
To: seaint(--nospam--at)
Subject: RE: Rigid diaph. analysis with diagonal walls


Thanks, but the walls are skewed such that there is no direction to look at that will eliminate the question.



From: Daryl Richardson [mailto:h.d.richardson(--nospam--at)]
Sent: Tuesday, March 11, 2008 10:25 AM
To: seaint(--nospam--at)
Subject: Re: Rigid diaph. analysis with diagonal walls




        You might try rotating your orthogonal axes 45 degrees and look at the problem again.  Sometimes a simple trick like this will let you see something that you missed the first time.  Just a thought; may not be worth anything.


        Good luck.




H. Daryl Richardson

----- Original Message -----

Sent: Tuesday, March 11, 2008 10:28 AM

Subject: Rigid diaph. analysis with diagonal walls


Some time ago, it seems someone ask about a rigid diaphragm shear distribution to a wall system where some of the walls are diagonal to the orthogonal axes.  I have looked through all my references and, of course, all the examples are pretty simple wall layouts, all at 90 degrees to each other.  How do any of you take care of this situation?  Are there any spreadsheets out there that will do this, or does anyone out there have an example from a reference that they could fax (or email) to me?  Enercalc has a module to do this, but their new version does not contain the help module yet, so I can’t get any background on it to see if I am inputting all the data correctly.


Thanks for the help,

Joe Grill