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RE: WTC tech article

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There is also FEMA 403.  It has temperatures in both C and F.  The Appendix A is particularly good if you are looking at fire aspects. 

Harold Sprague

From: dfisher(--nospam--at)
To: seaint(--nospam--at)
Subject: RE: WTC tech article
Date: Wed, 21 May 2008 09:37:19 -0600

Of all the published reports, this is my personal favorite:




David L. Fisher SE PE

Senior Director


The Fisher Companies Ltd. - Cayman

372 West Ontario Chicago 60610

75 Fort Street Georgetown Grand Cayman BWI

319 A Street Boston 02210



312.573.1726 facsimile

312.622.0409 mobile


"England expects every officer and man to do his duty this day."


                                       - Admiral Horatio Nelson

                                         HMS Victory

                                         Trafalgar 1805


From: Andrew Kester, P.E. [mailto:akester(--nospam--at)]
Sent: Wednesday, May 21, 2008 9:21 AM
To: seaint
Subject: WTC tech article


I am not starting a discussion here, but can someone suggest the MOST OFFICIAL (FEMA, AISC, ASCE, etc) online published document regarding the findings of the investigation of the World Trade Center collapses.


I think ASCE recently published their investigation of the other 47 story building that did not get hit by the planes. I have that and have read some of that, I want to read the latest on the two towers.


I am an anti-conspiracy theorist and like to disarm such arguments and ideas with technical facts from the experts.


My favorite lay person ridiculous argument is that "the steel could not have melted because the jet fuel burns at X degrees", which varies everytime I hear it. But according to AISC, the strength vs temp curve plot starts to plummet at 800 degees Farenheit. So of course it did not melt, it never had a chane to get close to that temperature before it loss enough strength to fail.



Andrew Kester, P.E.
Principal/Project Manager
ADK Structural Engineering, PLLC
1510 E. Colonial Ave., Suite 301
Orlando, FL 32803

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