Consequently, the thick concrete vaults and domes became shell structures, which were evolving, becoming bigger, thinner, and slender. They were the precedents of thin concrete shells. The first vaults and concrete domes were built at the end of the 19th century using the pioneer patents, among others those of: J. The formal and technological conquest of Modernist thin concrete shells is inseparable from the development of reinforced and prestressed concrete. The result reveals the different paths that they used to design and build their relevant legacies, which nowadays belong to the international heritage of Modernist Architecture.Ĭoncrete shells, design system, cantilevered structures, Modernist Architecture. Pier Luigi Nervi and Eduardo Torroja mainly used scale model tests to check the structural behavior of their new continuous structural forms, Ildefonso Sánchez del Río always used ribbed shells and chose geometric forms that were easy to calculate manually, and Félix Candela used real size models for the tests. Result and discussion: The analysis pointed out that the pioneer master engineers used different design systems. Methods: The research included two phases: firstly, the selection and analysis of some of the most relevant pioneer cantilevered shells, and secondly, the comparative analysis of their design systems. Cantilevered shells, like large domes, have been the most difficult to design and dimension when computers did not yet exist. HISTORICAL DESIGN OF CANTILEVER SHELLS OF MODERNIST ARCHITECTUREĭepartment of Architectural Construction and Technology, Polytechnic University of Madrid Madrid, SpainĮ-mail: Studying the historical design system of the pioneer concrete shells helps to reveal a relevant part of the History of Construction, which is also fundamental in acquiring the knowledge necessary to conserve and restore this iconic heritage. The result reveals the different paths that they used to design and build their relevant legacies, which nowadays belong to the international heritage of Modernist Architecture. Introduction: Studying the historical design system of the pioneer concrete shells helps to reveal a relevant part of the History of Construction, which is also fundamental in acquiring the knowledge necessary to conserve and restore this iconic heritage.
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