Thus, to erect an office building that was taller than around 800 feet and 55 stories required a very large site – rare in Manhattan – and special allowances for bonus FAR or transferred development rights. ![]() This was largely because the 1961 zoning laws restricted the maximum size of towers by a Floor Area Ratio (FAR), a formula geared to the area of the lot and the type of “use” district. New York developers erected many new skyscrapers in the later 20 th century, but no supertalls. The Sixties was a period of gigantism in the scale of its towers that was not matched until the Chinese supertalls Ping An (2017) and CITIC, Beijing (2018). ft.), as well as, briefly, the world’s two tallest buildings at 1,363 and 1,368 feet. of the Chrysler Building.įloor area was as decisive a factor as height in the 1960s and ‘70s when each of the twin towers of the World Trade Center independently qualified as the world’s largest building (with a floor area of 4.5 million sq. ![]() (as measured at the time: now 2.6 million), in contrast with the 900,000 sq. Not only was the Empire State 50 to 25 percent taller than its contemporaries, it was more than twice as big in its floor area – 2.1 million sq. The Empire State was not a typical tower of 600 to 800 feet: its 86 th floor leveled off at 1,050 feet and the tip of its mooring-mast spire reached the altitude of 1,250 feet/ 381 meters. New York City produced the first supertall, our benchmark Empire State Building, at the end of an unprecedented boom in high-rise office construction in the late 1920s that added more than a dozen towers of 40 to 50 or more stories to the skyline.
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