In October 2017, we invited tenders for the development of the Ulrichstein Langewiese development area. Together with Stadtverwaltung Ulrichstein we were able to reduce the trench width for the laying of the potable water line and the sewage pipe. In addition, the reuse of construction material has various positive effects. Besides saving material and the respective costs, it leads to a soil improvement which in turn reduces the disposal costs in the context of the civil engineering works significantly.