ABSTRACT

Federal Building and Fire Safety Investigation of the World Trade Center Disaster: Project #3: Analysis of Structural Steel   [open pdf - 7MB]

In this project, recovered WTC steel will be characterized to: Compare tested properties to specified yield strengths (and bylocation); Assess quality of the recovered steel; and to provide properties to be used in analysis of the buildings to: deduce the baseline performance of the buildings under wind and gravity loads; determine how much damage was done to the buildings, especially the floors and core, by plane impacts; determine how the steel responded to the high temperatures of the fires; determine the most probable structural collapse sequence,

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