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Improving Resilience in Water Distribution System
Ismail, Ahmed Farid
Ismail, Ahmed Farid
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Description
A Master of Science thesis in Construction Management by Ahmed Farid Ismail entitled, “Improving Resilience in Water Distribution System”, submitted in December 2022. Thesis advisor is Dr. Md. Maruf Mortula. Soft copy is available (Thesis, Completion Certificate, Approval Signatures, and AUS Archives Consent Form).
Abstract
There has been an emerging realization that resilient water infrastructure is critical to ensuring sustainable urban water management. To improve the resilience of the buried water infrastructure, an evaluation of the inherent resilience of the water system is necessary. A water distribution system including the pipe network is considered one of the critical components of the water supply system and it ensures delivering adequate safe water to the end-users. A reliable distribution system should maintain water quality within the network and supply sufficient quantity and pressure to the users regularly even during maintenance or repair of any part of the system. Due to the events that may result in preventing the water distribution system from continuing its critical services, it is crucial to evaluate the system's resilience under extreme failure conditions. Therefore, this study aims to investigate the resilience of the water distribution system under exceptional failure conditions such as pipe failure, water contamination, and water excess demand, quantify the corresponding performance, and develop a resilience index using the global resilience analysis (GRA) approach. GRA can be applied to a hydraulic model under hypothetical failure scenarios to assess the system’s resilience. University City water distribution system was used as a case study. In this study, the resilience index is developed under five stress categories which are 20%, 40%, 60%, 80% and 99%. Furthermore, the resilience index provides a score from 0-100 which is an overview of the performance of the system under the failure scenarios. The developed resilience index for the existing system indicate that the water distribution system is categorized as low resilience for the first two stress categories and very low resilience for the last three stress categories with 58.0, 51.0, 44.0, 33.52 and 22.46 respectively.