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Ferriss and the Ziggurat Form The ziggurat-skyscraper shape that Lang detected in the New York skyline was kindled by one regulation of outsized importance: the 1916 New York City zoning law that  massing for new buildings in the city. This law limited the total area of a lot that a building could occupy after a certain height, meaning that buildings would need to be “stepped back” as they rose, allowing sufficient light and air to reach surrounding structures. The law effectively ended the possibility of simply building up in ever-higher boxes, a trend that had characterized skyscrapers before the law was passed. While the so-called “step-back skyscraper” emerged as a solution to a local piece of municipal legislation, the architectural historian Carol Willis has argued that, over the course of the 1920s สล็อต