Nemetschek Engineering User Contest 2009 • Category 2: CAE Housing & Buildings 79 2 A flat, in situ-placed slab floor was used, without column slabs and beams. The 3-Dimensional computational model for the entire concrete framework has an important benefit: the adhesion factor can easily be determined, which means that the column positions are relatively easily optimised, in agreement with the architecture. The same model was used to calculate the weight- and stability figures, as well as the required amount of reinforcement in the storey floors. As part of the concept design, IMd has calculated the preliminary figures for the glass façade steel construction. This, too, was carried out using a 3-D computational model, which was transported from the architect’s 3-D drawing compilation to Scia Engineer. Vertically, the façade construction only transfers its own weight and possible snow accumulation to the building’s foundation; horizontally, it transfers the wind pressure to the storey floors of the concrete framework. A large part of the façade lacks horizontal support, since the building’s ridge - from the 2nd floor upwards - includes large voids. Thanks to the 3-Dimensional computational model, the required amount of steel necessary for the façade construction could be kept to a minimum: the building’s shape itself was applied to achieve optimum result, implementing disc- and scale effect, as well as flexural force. Taking into account the large size of the unsupported façade surface, the applied steel frames (pipes 90 x 90) can be considered exceptionally thin. The subsequent phase of the design process included the German consulting engineers Knippers Helbig, who - together with Fuksas - further developed the façade construction, using their 3-Dimensional software package. Their results, incidentally, did not differ from earlier calculations. Development and execution Construction works were started in October 2008, with the piling of FUNDEX poles. Prior to that, IMd presented the complete design- and reinforcement drawings for the concrete framework. Again, the 3-D model of the design phase was used to determine the amount of reinforcement in the walls and floors. Façade supplier Waagner-Biro, also a Scia software user, is to further develop the façade steel construction. Entrance building “De Admirant” Eindhoven
RkJQdWJsaXNoZXIy MTgyMDE=