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The loads considered are: gravity load, self-weight and an extra distributed load of 6KN/m2 (applied as a mesh load with Karamba). The material defined is concrete C40/50, which is the most similar to the original one used for the construction. In this model just two sizes have been used, 35cm and 70cm. The building is made of bars with a variable diameter (from 30 to 80 cm). The thickness of the shells has been considered 10cm, while the thickness of the bars is varying according to the survey we made (Carlo Deregibus and I) on the original project. However, both files do not allow the supports to move on the Z axis. One file is preserving the church symmetry locking the X and/or Y translations of some specific nodes. Two different files of this GH definition can be downloaded here.
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Then, a gene pool component has been added in order to allow spatial variations and therefore optimize the overall structural behaviour. The X,Y,Z coordinates of the original church have been used. Bars and shells are defined starting from 8 points for each quarter. In Grasshopper, the church has been modelled entirely in order to allow the Galapagos GA to find non-symmetric suitable configurations. The sum of these four parts becomes a roof structure composed by 20 vaults and 84 bars, connected with each other and thus giving a high sense of spatial complexity. In this post, I am going to define in parametric terms the geometry of the church in order to run an optimization process with Grasshopper, Karamba and Galapagos.Īs previously described, this complicated spatial configuration only defines a quarter of the whole church building, which is simply obtained by means of two axial symmetries. An unknown example of outstanding structure, Proceedings of the IASS Symposium “Evolution and trends in design, analysis and construction of shell and spatial structures”, Valencia (Spain), 28 September – 2 October 2009, pp.
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25, 2010.ĭEREGIBUS C., PUGNALE A., The church of Longuelo designed by Pino Pizzigoni. Design and construction of an experimental structure, in “Construction History”, Vol. The church was finally consecrated in June 1966.įor further details regarding Pino Pizzigoni and the church of Longuelo, please refer to:ĭEREGIBUS C., PUGNALE A., The church of Longuelo by Pino Pizzigoni. The construction started in 1962 and proceeded until 1965. His final project was presented in May 1961. The church of Longuelo is the last main building designed by Pino Pizzigoni and could be considered his most innovative work, representing the sum of experimentation about shells made during the last twenty years of his activity.