The Alster-Schwimmhalle is one of Germany 's larger aquatics centers, located in the Hamburg district of Hohenfelde . Opened in 1973, it has regularly hosted various national and international swimming competitions .
4-402: The Alster-Schwimmhalle is notable for its 102 m (335 ft) by 52 m (171 ft) double hyperbolic-paraboloid concrete-shell roof structure, designed by Jörg Schlaich , then partner at Stuttgart-based engineering firm Leonhardt & Andrä. Resting on three bearings and only 8 cm (3.1 in) thin, the concrete roof remains one the world's largest of its kind. Reminiscent of
8-545: A butterfly –an allegory to its function as a swimming venue– the airy roof structure earned the Alsterschwimmhalle its nickname as "Schwimmoper" ( Aquatic Opera ). The building was substantially renovated in 2007 at a cost of approx 1 mio EUR. A further major renovation is planned for 2020 to 2024 at an expected cost of 60 mio EUR, closing the facility for four years. [REDACTED] Media related to Alsterschwimmhalle at Wikimedia Commons This article about
12-405: A Hamburg building or structure is a stub . You can help Misplaced Pages by expanding it . This article about a German sports venue is a stub . You can help Misplaced Pages by expanding it . Saddle roof A saddle roof is a roof form which follows a convex curve about one axis and a concave curve about the other. The hyperbolic paraboloid form has been used for roofs at various times since it
16-410: Is easily constructed from straight sections of lumber, steel, or other conventional materials. The term is used because the form resembles the shape of a saddle . Sometimes referred to as a hypar , the saddle roof may also be formed as a tensegrity structure. Mathematically, a saddle shape contains at least one saddle point . The historical meaning is a synonym for a gable roof particularly
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