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The diagrid (a portmanteau of diagonal grid) is a framework of diagonally intersecting metal, concrete or wood support beams that is used in the construction of buildings and roofs. It requires less structural steel than a conventional steel frame. Hearst Tower in New York City, designed by Sir Norman Foster, uses 21 percent less steel than a standard design. The diagrid obviates the need for columns and can be used to make large column-free expanses of roofing. Another iconic building designed by Sir Norman Foster, 30 St Mary Axe, known as "The Gherkin", also uses the diagrid system. British architect Ian Ritchie wrote in 2012: == Buildings utilizing diagrid == * Shukhov Tower in Polibino, Polibino, Russia (1896) * Shukhov Rotunda at the All-Russia exhibition, Nizhny Novgorod, Russia (1896) * (The world's first double curvature steel diagrid roof ), Vyksa, Russia, (1897) * Altair, Colombo, Sri Lanka * Shukhov Tower, Moscow, Russia * Hearst Tower, New York, USA * 30 St Mary Axe, London, England * 1 The Avenue, Manchester, England * CCTV Headquarters, Beijing, China * The Bow, Calgary, Canada * Seattle Central Library, Seattle, USA * Capital Gate, Abu Dhabi, United Arab Emirates * Aldar headquarters, Abu Dhabi, United Arab Emirates * Guangzhou International Finance Center, Guangzhou, China * Queen Elizabeth II Great Court at the British Museum, London, England * Nagoya Dome, Nagoya, Japan * (Korkeasaari Lookout Tower ), Helsinki, Finland * (Milan Trade Fair ), Milan, Italy * Westhafen Tower, Frankfurt, Germany * MyZeil, Frankfurt, Germany * The Crystal, Copenhagen, Denmark * (Botanical Garden Shanghai ), Shanghai, China * (Paunsdorf Center ), Leipzig, Germany * (Departures concourse ) at London King's Cross railway station, London, England * (Coastlands Aquatic Centre ), Kapiti, New Zealand * (South Australian Health and Medical Research Institute ), Adelaide, Australia * (United Steelworkers Building ), Pittsburgh, USA * Tornado Tower, Doha, Qatar * (One Shelley Street ), Sydney, Australia * (Transport interchange ) at the Manukau Institute of Technology, Otara, New Zealand 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「diagrid」の詳細全文を読む スポンサード リンク
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