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The Gustave Eiffel Pavilion and the Ferrié Pavilion complete with a museum as well as an information and service area were each reconstructed between two pillars. In the case of the already existing 58 Tour Eiffel restaurant the glass facade was brought in line with those present in the other two pavilions. Glass surfaces facing inside and outside, a 130 m2 glass floor, which opens up a view of the Champ-de-Mars below. In order to meet the energy requirements, the Strasbourg-based façade builder, HEFI, opted for insulating glass elements, using Super Spacer® TriSealTM Premium Plus by Edgetech Europe GmbH as the spacer. (© L. Herbrecht)

Torre Diamante in the heart of Milano is with 130 m the tallest steel building in Italy. The use of high strength steel sections enables a low total weight, advantageous costs, less transport, slender columns and a preferred raft foundation. With long span composite floor beams flexible column-free offices and integrated building services can be realised. For the LEED certification the recycling-material steel played a major role. (Foto: Bernhard Hauke)

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The Kazakh pavilion was the heart of the EXPO 2017 in Astana. The ball-shaped construction of steel and glass with a diameter of 80 m had to be designed in a very short time and erected at temperatures as low as -40°C. In the upper part, there are two wind turbines, which contribute to the sustainable energy supply of the pavilion. (Copyright: Andreas Keller, Altdorf, see p. 125)

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Yohanes Ingkiriwang and Harry Far: Numerical investigation of the design of single-span steel portal frames using the effective length and direct analysis methods
Hussein Haydar, Harry Far and Ali Saleh: Portal steel trusses vs. portal steel frames for long-span industrial buildings
Matthias Rohde: Loads and strength in amusement rides
Pierre-Olivier Martin, Tien Minh Nguyen and Laurence Davaine: Effect of the torsional stiffness of closed section stiffeners on plate buckling in Eurocode 3 Part 1-5
Maciej Chrzanowski, Christoph Odenbreit, Renata Obiala, Teodora Bogda, Hervé Degée: Shear stresses analysis at the steel-concrete interface. Experimental tests and FE numerical model.
Emidio Piermarini, Hayden Nuttall, Rob May, Victoria M. Janssens, Wolf Manglesdorf and Tim Kelly: Morpheus Hotel, Macau: A paradigm shift in computational engineering

More than 2 million people pass through the Värtahamnen, Silja Line's ferry passenger terminal in Stockholm each year. As Ruukki designed and delivered the steel structures for the terminal, the prominent building is a good reference for the company and has recently been awarded a commendation from the Swedish Institute of Steel Construction. Every other year, the Institute gives an award for a structure where steel has been used innovatively and in an architecturally interesting way in the load-bearing structure of a building, which has been completed in an environmentally sustainable way. (© Ruukki)

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Stefanie Weidner and Walter Haase: The Implementation of an Adaptive High-rise Building
Bill Baker: The Design of Structural “Spider” Webs
Roland Bechmann, Stephen Hagenmayer and Thomas Winterstetter: Efficiency and Beauty - Steel Structures by Werner Sobek
Frank Barkow and Regine Leibinger: In Dialogue
Stephan Engelsmann and Stephan Peters: Emblematic steel roof structures for central bus stations in Baden-Württemberg / Germany
Walter Grasmug and Lucio Blandini: The Role of Steel in Innovative Building Skins

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The Kienlesberg Bridge is the new link for trams, pedestrians and cyclists between the inner city and the science centre in the northwest of Ulm, Germany. The bridge crosses a railway junction near the main station and a new high-speed rail link. The geometric boundary conditions lead to unequal spans and complex alignments. Therefore, the scheme that won the design competition, which is now under construction, proposed a bridge made of steel. The superstructure was designed as a semi-integral continuous beam with main girders of varying depth. Owing to the pedestrian and cyclists'path on one side, the orthotropic plate cross-section is asymmetric and the main girders have varying depths. Special calculations and details were necessary for dynamic and noise control reasons. The bridge is being built using incremental launching See article on pages 189-195 (photo: W. Dechau).

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