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How Long Did the Towers Take to Collapse?

The aviation unit declared at 10:27 that “the roof is going to come down very shortly” and indeed, their announcement was proven correct less than a minute later when the north tower finally collapsed at 10:28 a.m., one hour and 41 minutes after being struck.

How Long Did the Towers Take to Collapse?

The collapse of the Twin Towers on September 11, 2001 was one of the most shocking and devastating events in modern history. It has been a source of endless speculation, as people try to make sense of the tragedy and understand what could have caused such a catastrophic event. One of the questions that has been asked is, “How long did the towers take to collapse?”

The answer to this question is not simple. The collapse of the Twin Towers was an incredibly complex event that began at 8:46 am and was completed at 10:28 am, for a total of 1 hour, 42 minutes. However, this does not tell the whole story. There were several distinct phases of the collapse that took various lengths of time.

The initial impact of the airplanes into the upper floors of the towers was the first stage of the collapse. The damage caused by the impact created a weakened structure on the upper floors. This weakened structure was then further destabilized by the resulting fires. The fires burned for approximately 56 minutes before they reached their peak intensity.

The next stage of the collapse was the progressive failure of the steel core columns. This was the longest stage of the collapse and took approximately 20 minutes. The force of the fires combined with the weakened

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