This skyscraper's extraordinary exterior is not just for show. Designers Triptyque and Architects Office have arranged the building around a concrete exoskeleton, which provides structural support and ...

From early rigid frames to today’s high-performance cores and damping systems, skyscraper structures have evolved to meet the demands of height, wind, and seismic safety. Engineers now combine steel, ...

One of Bertrand Goldberg’s twin Marina City towers being built in Chicago. When completed in 1968, the towers were the tallest reinforced concrete structures in the world. (Courtesy Geoffrey Goldberg) ...