42. Hall 26 Hanover Expo-Trade Show Thomas Herzog, arch Jorg Schlaich, engr 1994 - 1996 Herzog and Partner, Munich Schlaich Bergermann and Partner, Stuttgart
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45. Competition Brief: 25,000 - 30,000 m 2 important criteria: load bearing structure for long spans minimum height roof with high points to enhance natural ventilation daylight preferred, direct sunlight restricted use of renewable materials and savings in energy use
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47. Natural light: external sun screening on south façade and roof triple glazing with light reflecting grids mirrored soffit Artificial lighting: lights on sides of glass ducts projected upward and reflected off mirrored ceiling lights on sides of glass ducts projecting downward suspended lighting in strip along underside of ceiling
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64. Horizontal section showing pre-tensioned back to back steel channels. Vertical section showing 80mm x 50mm façade rail.
65. COUNCIL OF TALL BUILDINGS AND URBAN HABITAT Chicago Conference October, 2009 See presentation by engineer Richard Tomasetti of Thornton, Tomasetti Inc. He discusses the new tower by Calatrava called the Chicago Spire. http://ctbuh.org/Events/Conferences/Chicago2009Home/Chicago2009Speakers/tabid/1277/language/en-GB/Default.aspx
