G. V. Loganathan’s Legacy on Water Distribution System Asset Management

During the last 10 years , the writers conducted four projects with Dr. G. V. Loganathan on water distribution system research and applications, and developed and used several tools, which, combined, formed a comprehensive methodology for water distribution system asset management. This paper highlights Dr. Loganathan’s contributions in water distribution system asset management. One of the projects was to develop a prioritized water main replacement program for a water utility experiencing a large number of cast iron water main breaks. For this project Dr. Loganathan formulated a computer program to analyze a large amount of water main break data, on a pipe-by-pipe basis, to formulate an economic model to identify an economically optimum time to replace a pipe, and to develop an optimum water main replacement program. In the second project Dr. Loganathan developed a methodology and a modeling system to predict structural failure and to prioritize candidate mains for renewal. Once an asset management prog...