The Hearst Tower in Manhattan. © Ramon Ferreira.
The first New York City skyscraper to break ground after the September 11, 2001, terrorist attacks, and the first office high-rise in the city to earn LEED Gold certification, Hearst Tower is set apart by its unusual triangular (diagrid) frame pattern. Constructed atop the historic International Magazine Building commissioned by William Randolph Hearst, the super-efficient structure required about 20 percent less structural steel than a conventional steel frame. Thornton Tomasetti provided protective design services for the tower, working with the owner, construction manager, architect and design team to establish and implement security criteria.
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