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RE: Progressive collapse

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I believe the software PERFORM developed by Computers and Structures does Progressive Collapse Analysis. We are just beginning to use this Software but I have heard many good things about it specially with regard to non-linear analysis of structural performance in design offices and the support system. I have to disclose that this program is developed by my colleague and friend Professor Powell of UC Berkeley. You may want to try this site for more information
Of course, more high end software, such as DYTRAN and NASTRAN (both from can be used to investigate progressive collapse. We have used these extensively and for about 8 years and are very satisfied with their capabilities and the support system.

Hope this helps.

Abolhassan Astaneh-Asl, Ph.D., P.E.,
Professor and Consultant on Structural Engineering,
Earthquake Engineering and Protection of Structures against Impact and Blast

From: "Conrad Harrison" <sch.tectonic(--nospam--at)>
To: <seaint(--nospam--at)>
Subject: RE: Progressive collapse

As far as I am aware there is no commercial software at present for
progressive collapse, just research. Also progressive collapse is more a
qualitative issue than quantitative.

Any frame analysis software with a programmable interface would be helpful
for the analysis. Without the programmable interface simply copy the model,
delete the members and change the loads. With a programmable interface
automatically delete members and change loads using the one model, and
search for the critical condition.

Conrad Harrison

B.Tech (mfg & mech), MIIE, gradTIEAust



South Australia

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