Did You Know: National Skyscraper Day (Sept. 3)

One World Trade Center is the main building of the rebuilt World Trade Center (WTC) complex in Lower Manhattan, New York City.

— PHOTO BY MARK LENNIHAN/ASSOCIATED PRESS

• The word skyscraper comes from a nautical term which referred to a small triangular sail placed above the skysail on a sailing ship.

• One World Trade Center is the main building of the rebuilt World Trade Center (WTC) complex in Lower Manhattan, New York City. One WTC is the tallest building in the United States, the tallest building in the Western Hemisphere, and the sixth-tallest in the world. The building opened on November 3, 2014. The building is 104 standard floors high, but the tower has only 94 actual stories.

• There are more than 10 million bricks in the Empire State Building.

• The Empire State Building in New York was the first building to have over 100 floors and was the tallest building in the world from 1931 until 1972.

• The Home Insurance Building, which was demolished in 1931, is still known as “the father of the skyscraper.” Built in 1885 in Chicago, it was 138 feet tall with 10 stories and was the first building to use steel beams and columns for support so that it could have more windows.

• The Empire State Building also has its own zip code to accommodate its 1,000 businesses and 21,000 employees. It is 10118.

• From the top of Sears Tower in Chicago, if the day is clear, one can see four states: Illinois, Indiana, Wisconsin and Michigan.

• Empire State Building was built in 410 days.

• Elevators are a must-have in a skyscraper.

• While not technically called a skyscraper, the Eiffel Tower was the world’s tallest building in 1889. Every seven years, the tower is repainted with 50 tons of dark brown paint.

• Around 20,000 workers helped build the Taj Mahal, a famous mausoleum and landmark in Agra, India, that attracts millions of visitors every year.

• Asia is leading the race to the top, with 88 skyscrapers.

• The Burj Khalifa in Dubai, UAE, is the tallest building in the world. It reaches an amazing 828 metres (2717 feet) in height.

• Tall buildings need fast elevators, recent developments have led to elevators that can travel up to, and sometimes over, 1000 metres a minute (3280 feet a minute).

www.historyofskyscrapers.com.

Contact staff writer Chanel Hill at (215) 893-5716 or at chill@phillytrib.com.

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