The failure of the NIST WTC 7 report to address concerns raised in Appendix C of the 2002 FEMA Building Performance Study

by Tony Szamboti, M.E.

The NIST WTC 7 report does not attempt to explain the “severe high-temperature corrosion attack” on apparently the only piece of WTC 7 steel which was tested, as documented in Appendix C, “Limited Metallurgical Examination” of the Federal Emergency Management Agency (FEMA) Building Performance Study, which can be found at the link below on the NIST website.

http://wtc.nist.gov/.../AppendixC-fema403_apc.pdf

The detailed study deemed necessary by FEMA was – as far as we know - never done, and the observed “intergranular melting” of the steel can not be explained within the framework of the present NIST hypothesis. Why would NIST ignore the recommendations made by FEMA investigators for additional research of the unexplained material behavior?

In a taped interview Worcester Polytechnic Institute Fire Engineering professor Dr. Jonathan Barnett, one of the authors of the 13 page report in Appendix C, made the comment that normal investigative protocol was not followed in the case of the WTC 7 collapse. He says that the steel from WTC 7 was not photographed, examined, and cataloged before being removed. The comments he makes are at the 3:00 minute mark in the below linked video.