|
On February 14, 1975, a three-alarm fire broke out between the 9th and
14th floor of the North Tower. According to the New York Times, the fire
leads to intense scrutiny of the towers and eventually to a decision to
install sprinklers.
On May 4, 1988, a 62-story skyscraper in Los Angeles, burned for three
hours and spread over four floors. It did not collapse.
On February 23, 1991, a 38-story skyscraper in Philadelphia, built in
1973, burned for more than 19 hours and spread over 8 floors. It did not
collapse.
On October 17, 2004, a 56-story skyscraper in Venezuela, built in 1976,
burned for over 17 hours and spread to over 26 floors, eventually
reaching the roof. Guess what? It did not collapse.
On February 12, 2005, the Windsor building in Madrid, a 32-story tower
framed in steel-reinforced concrete, burned for almost 24 hours,
completely eradicating the upper 10 stories of the building. Although
the top ten floors of the building fell, the building itself did not
collapse.
And yet, on September 11, 2001, two 110 story skyscrapers, concluded in
1973, burned for 56 and 103 minutes, respectively, over four floors,
before collapsing completely to the ground. This might argue that this
was due to the construction of the World Trade Center.
The Twin Towers
were composed of 200,000 tons of steel
425,000 cubic yards of concrete
103 elevators
43,600 windows
60,000 tons of cooling equipment
Go to Next Page
|
