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How long did it take the Twin Towers to collapse?

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The South Tower collapsed 56 minutes after being hit, and the North Tower 102 minutes after being hit. Once the buildings began to fall, each took less than 30 seconds to fully collapse. The South Tower, though hit second, collapsed first.

Parts of the South Tower reached the ground about 9 seconds after its collapse began at 9:59 AM EDT, approximately 56 minutes after being hit. The central core of the lower 40 floors caved in within 25 seconds thereafter. Debris flattened or filled the seven basement levels within a few seconds.

The TV mast and roof from the North Tower struck the ground about 11 seconds after the descent began, at 10:28 AM EDT, 102 minutes after being hit. The central core of the lower 60 floors completely collapsed within 10 to 15 seconds after being bypassed by the falling upper floors.

Most of the interior collapse was hidden by dust and debris, which also spread over the surrounding buildings and streets.
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Why did the Twin Towers collapse?

The Twin Towers of the World Trade Center collapsed because when the planes were flown into the towers it ignited the jet fuel and after burning for hours it made the inner co

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What time did the Twin Towers start to collapse?

The NYPD (New York Police Department) logs the first tower's (South) collapse at 9:59 a.m., and the second tower's (North) at 10:28 a.m. The Twin Towers collapsed 29 minutes

How did the Twin Towers collapse?

The Twin Towers of New York's World Trade Center were targeted as part of a terrorist campaign against the United States by Islamic fundamentalists opposed to the US actions i

How long did it take for the second tower of the twin towers to fall?

The South Tower of the World Trade Center was struck by Flight 175 at 9:03, and later collapsed at 09:59. Therefore, it took 56 minutes of continuous smoke & flames before it

How long did it take for the twin towers fall?

The elapsed time from the moment American Airlines Flight 11 struck the North tower until both towers had crashed to Ground Zero was 102 minutes. The enormous weight of the

When did the Twin Towers collapse?

The Twin Towers of the New York World Trade Center collapsed at 9:59 AM and 10:28 AM EDT on September 11, 2001. The buildings were targeted as part of a terrorist campaign aga

How long did it take to build the twin towers?

The Port Authority of New York and New Jersey began the process of  acquiring property for the World Trade Center in late 1964.    Groundbreaking for the World Trade C

How long did it take to build twin towers?

20 years The initial concept dates back to 1946 for a "World Trade Center" Development. There were numerous delays for a variety of reasons. However, demolition did not actual

How long did the twin towers burn before collapsing?

Amateur 9-11 Twin Towers Videos were on www.youtube.com. The South Tower, after they burnt for 53 minutes, then the South Tower collapsed for 11 seconds. And I'm not sure how

How long did it take for both the twin towers to finish collapsing?

It took a total of 102 minutes after American Airlines Flight 11 hit the North Tower of the World Trade Center for both towers to collapse. Although it was the second tower