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Analysis of Aircraft Impacts into the World Trade Center Towers (Appendixes) Federal Building and Fire Safety Investigation of the World Trade Center Disaster (NIST NCSTAR 1-2B)



Steven W. Kirkpatrick, R. Bocchieri, Fahim Sadek, Robert S. MacNeill, S Holmes, B D. Peterson, R W. Cilke, C Navarro


The baseline structural performance and aircraft impact damage analysis of the National Institute of Standards and Technology (NIST) Investigation of the World Trade Center (WTC) disaster had two primary tasks: (1) to develop reference structural models of the WTC towers and use these models to establish the baseline performance of each of the towers under gravity and wind loads, and (2) to estimate the damage to the towers due to aircraft impacts and establish the initial conditions for the fire dynamics modeling and the thermal-structural response and collapse initiation analysis. This report provides the technical approach, methodology, and results related to both tasks.
National Construction Safety Team Act Reports (NIST NCSTAR) - 1-2
Report Number
Created December 1, 2005, Updated November 10, 2018