Analysis of the failure of steel connections in World Trade Center Tower 5Public
On September 11, 2001, fires began to spread throughout WTC Tower 5. These fires caused numerous steel shear-tab connections to fail causing collapse in part of the tower. This paper discusses the prediction of steel shear tab connection failure (web tear-out mode in this case) as a result of unwanted fire exposures. Both protected and unprotected connections are analyzed using the finite element analysis program, ALGOR. As a result of this research, recommendations for future fire exposed steel connection research and design methodologies will be presented.
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