The second supports were on the outside,It was a frame of 14 inch wide steel columns and were perfectly square. The architect who designed the towers was Minoru Yamasaki. He built it on 16 acres in manhattan and had an open plaza including buildings to protect the towers from wind. Construction began in february,1967 and had 200000 pieces of steel, 300 miles of electrical wiring, 42500 cubic yards of concrete, 40,000 doors, 43600 windows, and 6 acres of marble. A trench, 70 feet down had to be dug into bedrock. One million cubic yards of landfill were removed, port authority used this fill for a 40 million dollar worth of land for Battery Park City. Additionally, the towers had elevators that saved space that were located at the towers core. There were 97 passenger elevators that could carry up to 10,00 pounds and had speeds up to 1,600 feet per minute.The last piece of steel was put on the north tower on december 23, 1970 and the ribbon cutting was not until April 4 , 1973. The total height of the towers were 1350 feet or 110 stories and were the worlds highest for two years. Governor Nelson Rockefeller said, “ It is not to often that we see a dream come true . Today we have.” The World trade center soon became a popular place, many movies were filmed there and in August 1974 Philippe Petit walked a tightrope between the two towers. In may 1977 George Willig earned a nickname of …show more content…
Sara Woster was an eyewitness, who was on the 21st floor of the Woolworth building when the plane hit. “It sounded like a sonic boom, and although I don't remember if the building shook, you could physically feel the vibration of the impact in your body. Its like your stomach shook.” She saw a huge hole with large metal pieces falling and began to evacuate the building. About a half mile away from the tower she sees the first tower collapse, later she realizes that it is completely silent except for sirens and people walking. “There were national guard every two feet with machine guns and redcross workers handing out water every three feet.” Brian Clark worked for the Euro Brothers on the 84th floor when the plane hit, his lights dimmed and and flames covered the view of his window. He also was the fire warden and had a whistle and flashlight and warned people to get out. Then the second plane hits five floors below him, the lights go out and the ceiling crumbles. They begin to evacuate, but hear someone calling for help on the 81st floor. Brian and his friend help the trapped man, Stanley Praimnath to safety and got out of the tower. Five minutes later the south tower crumbles to the ground and they run to a nearby church to escape smoke. Later on they take a ferry across the Hudson river to Jersey City. In conclusion, the attack on the World Trade Center was one of the most tragic event to take