Uncertainty Analysis of Sanitary Sewer Networks Using Fuzzy Logic,Case Study: Part of Mashhad Sanitary Sewer Network

Design parameters for sanitary sewer networks are imprecise and subject to high degree of uncertainty. In this research, a new method based on fuzzy logic, is proposed for uncertainty analysis of flow in sanitary sewer networks. The method is flexible enough for selecting design parameters and simple to use. It is applied to part of the sanitary sewer network of Mashhad, as a case study. The results indicate that such an uncertainty analysis can provide designers and maintainers with an appropriate perspective of flow and its associated parameters such as discharge, velocity and depth. This can be used in performance analysis of networks by including a wider spectrum of parameters in the analysis.