World Trade Center

Publications

Baseline Structural Preformance and Aircraft Impact Damage Analysis of the World Trade Center Towers

This report analyzes the structural performance and aircraft impact damage of the World Trade Center Towers as part of the NIST investigation into the September 11 attacks. It examines the towers’ original design under gravity and wind loads and assesses aircraft impact effects using computational modeling. The study evaluates structural response, localized failures, and fire-related weakening, providing insights into high-rise resilience and safety improvements.

Computer Simulation of Impact and Collapse of New York World Trade Center North Tower on 9/11

A 3D computer simulation of the World Trade Center North Tower's destruction, modeling the initial impact, fire-induced strength reduction, and progressive collapse. The simulation uses the AUTODYN-3D program and advanced numerical techniques to analyze the entire catastrophic event.