The Port Authority is nearing completion progress on the $3.8 billion 1 World Trade (formerly called the "Freedom Tower"). Located at the northwest corner of the WTC site, installation of steel columns and core concrete continues.
The skyscraper was built according to a revised design released in June 2005. The new design retains essential elements of the original plan -- soaring 1,776 feet into the sky -- but features a smaller, cubic base set back further from West Street to protect the building against future attacks.
Rising from its square base -- which will be constructed of impermeable concrete and steel -- the redesigned 1 WTC will taper into eight tall isosceles triangles, forming a perfect octagon at its center. The observation deck will be located 1,362 feet above ground (105 stories) and there will be a parapet at 1,368 feet, the heights of the original Twin Towers. From there, an illuminated spire containing will rise to a final height of 1,776 feet.
Other key elements include; 2.6 million square feet of office space, tenant amenity spaces, world-class restaurants, below-grade retail, and access to the PATH, subway, and World Financial Center. According to the Port Authority schedule, the tower is expected to be substantially complete in late 2013, with some interior fit out continuing into 2014.
sumber dari: architecture.about.com
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