A 3D scan of the interior provided the basis for this. This made it possible to determine the dimensions and then translate them into a three-dimensional building model. Finally, Lothar Stärk worked out the complicated, three-dimensional geometry of the sanctuary’s interior with the numerous niches and curves in the vaulted ceiling and an overall size of 13,000 m³ using a free-standing, metric system grid in 25 cm and 50 cm steps. What was particularly challenging was the fact that no ties could be anchored to the historical building for fear of causing damage. The three-dimensional visualisation of the scaffolding also served as a common communication model and delivered real added value during meetings involving all project participants. It was possible to identify and quickly resolve clashes and conflicts of interest in an optimal manner.
Thanks to the BIM method used, not only did the scaffold planning process itself prove to be particularly efficient, but also the subsequent on-site assembly process. The client benefited from a high degree of planning reliability and from time savings throughout the entire construction process. The delivery of materials was also planned in consultation with the scaffolder and was carried out using a just-in-time approach on account of the spatial restrictions. The regional nature of PERI as a company proved to be extremely useful in this regard. The central location of the rental park for system units at PERI’s head office in Weissenhorn offered a short transport route to Ulm – and on-schedule supply of materials without any downtime. Sticking to the demanding schedule was straightforward.