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发表于 2010-9-12 11:12:12
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以下信息来自维基百科
In May, the Port Authority stated that they are building close to one floor per week, and that One World Trade Center should reach fifty-five stories by the end of 2010. The cocoon system has been installed to 1 WTC. It was the first time a cocoon safety system has been installed on a steel superstructure in New York City.As of July 2010, 1 WTC's steel superstructure is 340 feet above ground and is on floor 32 and concrete installation is on floors 26 and 27. As of September 10th 2010, One World Trade Center has risen to 38 stories, becoming part of the skyline of New York. |
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