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How Did Wtc Collapse?

The collapse of the world trade center occurred during the terrorist attacks of september 11, 2001, after the twin towers were struck by two hijacked commercial airliners.

How Did Wtc Collapse?

On September 11, 2001, the World Trade Center in New York City collapsed in the worst terrorist attack in United States history. The collapse of the Twin Towers was an unprecedented event that shocked the world, leading to an investigation that sought to answer the question of how did WTC collapse?

The official investigation into the collapse of the Twin Towers conducted by the National Institute of Standards and Technology (NIST) concluded that the towers were destroyed primarily by the impact of two hijacked airplanes, as well as the ensuing fires that weakened the steel structure. The impact of the airplanes caused significant damage to the towers’ columns and floors, while the fires weakened the remaining steel structure and caused it to collapse.

The NIST report states that the towers were designed to withstand the impact of a Boeing 707, the largest plane in operation at the time, and were likely to survive the impacts of the smaller Boeing 767s that were used in the attacks. However, the report also states that the towers were not designed to withstand the ensuing fires caused by the burning jet fuel. The fires caused the steel columns to expand and contract, and eventually weakened the structure to the point where it could no longer support the weight of the upper floors.

The NIST report also concluded

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