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What happened to the steel of the Twin Towers?

2024-09-11 20:31:24Kosova&Bota SHKRUAR NGA REDAKSIA VOX
What happened to the steel of the Twin Towers?
What happened to the steel of the Twin Towers?

The September 11, 2001 attacks were four coordinated suicide attacks by an al-Qaeda-linked group to attack civilian and military targets in the United States, resulting in the deaths of more than 2,900 people.

Standing 417m and 415m tall respectively, each building had 110 floors and was made up of 250,000 tonnes of steel. At the time it was the tallest skyscraper in the world and the beating heart of the World Trade Center.

On the morning of Tuesday, September 11, 2001, two of the four planes "swooshed" into the World Trade Center, crashing into the Twin Towers, causing them to collapse.

Due to debris and fires, this also caused the collapse of one of the buildings near the Towers, WTC 7.

According to simulations by NIST, which is the National Institute of Standards and Technology, the weakening of the steel caused the collapse, where the impact fires reached temperatures of up to 800-1000°C, writes the scientific site Geopop.it.

What happened to the steel of the twin towers?

According to the NIST reconstructions, when the plane clipped the columns, the weight was redistributed to the structure that remained intact.

At this point – again according to NIST – the towers would have remained standing had the temperatures inside the building not increased.

The high temperatures penetrated very quickly between the floors also as a result of the broken windows and penetrating spaces created by the collision.

So we can say that steel at high temperatures loses efficiency and as a result the lower floors could not support the weight above.

The first to lose resistance would have been the steel of the shock floor floors. Basically, this area lost its ability to support any load and collapsed.


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