Selvakumar, Ariamalar creator Orth, Hermann M. Chairperson Nguyen, Cong Thanh Examination Committee Vigneswaran, Saravanamuthu Examination Committee The Government of Norway Scholarship Donor text th Bangkok Asian Institute of Technology 1984 monographic eng v, 43 p. The purpose of this study is to find t he e conomicaltlow velocity in a water distribution system. The economical flow velocity in the pipe line depends on the roughness coefficient, energy cost , construction cost and present worth factor. A theoretical study was done to study the influence of above factors on economical flow velocity. When the system consists of a single pipe and a p ump the ec onomical flow velocity uoes b~ar a definite relation to tha diameter for a given set of costs. b ut in a distribution system , economical flow velocity depends on the hyd raulics of the networK a lso. Statistical analysis was done to study the distribution of economical f low velocity tor each diameter and Kolmogorov - Smirnov test was used to test the goodness of fit. A thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering, School of Environment, Resources and Development Thesis (M.Eng.) - Asian Institute of Technology, 1984 Water Distribution Mathematical models Asian Institute of Technology. http://203.159.5.9/ait-thesis/detail.php?q=B20577 http://203.159.5.9/ait-thesis/detail.php?q=B20577 301098 20260818094704.0