Word: steeles
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Each of the towers, more than 200 ft. wide on each side, contained a central steel core surrounded by open office space. Eighteen-inch steel tubes ran vertically along the outside, providing much of the support for the building...
Once the plane damaged the central core, the weight was redistributed to the outer steel tubes, which were slowly deformed by the added weight and the heat of the fires...
...normal day, we value heroism because it is uncommon. On Sept. 11, we valued heroism because it was everywhere. The fire fighters kept climbing the stairs of the tallest buildings in town, even as the steel moaned and the cracks spread in zippers through the walls, to get to the people trapped in the sky. We don't know yet how many of them died, but once we know, as Mayor Rudy Giuliani said, "it will be more than we can bear." That sentiment was played out in miniature in the streets, where fleeing victims pulled the wounded to safety...
...tower's structural strength came largely from the 244 steel girders that formed the perimeter of each floor and bore most of the weight of all the floors above. Steel starts to bend at 1000[degrees]. The floors above where the plane hit--each floor weighing millions of pounds--were resting on steel that was softening from the heat of the burning jet fuel, softening until the girders could no longer bear the load above. "All that steel turns into spaghetti," explains retired ATF investigator Ronald Baughn. "And then all of a sudden that structure is untenable, and the weight...
...island and wound up the highways as far as you could see, tens of thousands of people with clothes dusted, faces grimy, marching northward, away from the battlefield. There was not a single smile on a single face. But there was remarkably little panic as well--more steel and ingenuity: Where am I going to sleep tonight? How will I get home? "They can't keep New Jersey closed forever," a man said. Restaurant-supply companies on the Bowery handed out wet towels. A cement mixer drove toward the Queensboro Bridge with dozens of laborers holding onto it, hitching...