On the basis of the GIS data about the network, the network break failures, the rehabilitation costs and the failure costs the used rehabilitation strategy of the city of linz should be optimised. Therefore the Modelling Tool PiReP is used to analyse break failure rates, to calibrate aging functions and to modelise the longterm rehabilitation needs. Various szenarios for future rehabilitation programs are compared.
Furthermore priorities for rehabilitation are defined. Therefore technical, economic and specific regional criteria for rehabilitation are investigated. The result will be a list of rehabilitation priorities which can be visualized and used for further planning in the GIS