Stability of Traditional Urban Water Systems – Integrated Assessment of Transitions Scenarios

In this work it is quantified to what extent existing water networks can cope with urban and population change developments before they fail. For that, the VIBe (Virtual Infrastructure Benchmarking) approach is used in order to create numerous city scale test cases (including urban form, water supply and drainage system) with different characteristics. Based on 81 test cases, probabilities of failure for different system characteristics are determined. For such an integrated assessment, a key issue is the weighting of the different technical performances when identifying stable ranges for the overall performance. Therefore, different weighting strategies are tested and compared.