articles mentioned in my post above:
Why Did the Trade Center Skyscrapers Collapse?
by Morgan Reynolds
http://www.lewrockwell.com/reynolds/reynolds12.html
Why Did the World Trade Center Collapse? Science, Engineering, and Speculation
Thomas W. Eagar and Christopher Musso
http://www.tms.org/pubs/journals/JOM...agar-0112.html
Read all three articles and you really start to think that there is something wrong in the official story.