posted on Jul, 25 2003 @ 02:41 PM
"Why Did the World Trade Center Collapse? Science, Engineering, and Speculation
Thomas W. Eagar and Christopher Musso
There have been numerous reports detailing the cause of the World Trade Center Tower collapse on September 11, 2001. Most have provided qualitative
explanations; however, simple quantitative analyses show that some common conclusions are incorrect; for example, the steel could not melt in these
flames and there was more structural damage than merely softening of the steel at elevated temperatures. Some guidelines for improvements in future
structures are presented.
INTRODUCTION
The collapse of the World Trade Center (WTC) towers on September 11, 2001, was as sudden as it was dramatic; the complete destruction of such massive
buildings shocked nearly everyone. Immediately afterward and even today, there is widespread speculation that the buildings were structurally
deficient, that the steel columns melted, or that the fire suppression equipment failed to operate. In order to separate the fact from the fiction, we
have attempted to quantify various details of the collapse.
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[Edited on 26-7-2003 by William]