2019 CSCE Annual Conference - Laval (Greater Montreal)

2019 CSCE Annual Conference - Laval (Greater Montreal) Conference


Title
Water Distribution Systems: Effect of Geographical Location on Expert Judgement

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Author(s)
Dr. Zahra Zangenehmadar, Concordia University (Presenter)
Mr. Sasan Golnaraghi, Concordia University
Mrs. Seyedeh Sara Fanaei
Abstract

Water distribution systems are one of the key elements in the underground infrastructure network. There are large numbers of studies on the various aspects of deterioration, failure, rehabilitation and replacement of water pipelines in which certain factors, along with their weights of importance, are assumed to influence the performance of water distribution pipelines. These weights of importance are mostly calculated based on expert judgement which is shaped by years of experience and the demographic distribution of experts. Since these factors will be used in the performance prediction of the pipelines, the accuracy of these models will be highly dependent on the experts’ opinions. This study aims to evaluate the impact of location on expert judgement in performance assessment of water distribution networks. Two groups of professionals with the same set of circumstances from Canada and Qatar have been chosen to determine the influence of location on decision-making. The same set of questionnaires was sent to both groups asking them to identify the most important factors in the deterioration of water pipelines and their respective weights of importance. Results show that the experts’ opinions are greatly colored by their location and the surrounding environment, which highlights the importance of considering these factors in further studies.