Research Article
Apr 1977
Models for Capacity Planning of Water Systems
Authors: Donald T. Lauria, M.ASCE, Roland W. Wentworth, AM.ASCE, and Donald L. SchlengerAuthor Affiliations
Publication: Journal of the Environmental Engineering Division
Volume 103, Issue 2
Abstract
Several models are reported in the technical literature for deciding the optimal capacity of water systems. Many require use of numerical techniques and the computer for solution. Simple approximating equations are presented for calculating the optimal design periods of two models particularly relevant to sanitary engineering; one pertains to capacity expansions and the other to initial construction where facilities have not yet been built. The principal contribution of this paper is a model for determining the optimal waiting period prior to constructing new systems; an approximating equation is presented for the optimality conditions to avoid use of numerical methods. Model assumptions are appropriate for both economically advanced and developing countries. The penalty cost of not satisfying demands is shown to be a key model parameter; a method is presented for inputting its value. Numerical examples are included.
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Published In
Journal of the Environmental Engineering Division
Volume 103 • Issue 2 • April 1977
Pages: 273 - 291
Copyright
© 1977 American Society of Civil Engineers.
History
Published in print: Apr 1977
Published online: Feb 11, 2021
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Authors
Affiliations
Donald T. Lauria, M.ASCE
Assoc. Prof.; Dept. of Environmental Sci. and Engrg., Univ. of North Carolina, Chapel Hill, N.C.
Roland W. Wentworth, AM.ASCE
Environmental Engr.; Camp, Dresser, and McKee, Inc., Boston, Mass.
Donald L. Schlenger
Special Projects Engr.; Hackensack Water Co., Weehawken, N.J.
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ASCE Library Cards let you download journal articles, proceedings papers, and available book chapters across the entire ASCE Library platform. ASCE Library Cards remain active for 24 months or until all downloads are used. Note: This content will be debited as one download at time of checkout.
Terms of Use: ASCE Library Cards are for individual, personal use only. Reselling, republishing, or forwarding the materials to libraries or reading rooms is prohibited.
Terms of Use: ASCE Library Cards are for individual, personal use only. Reselling, republishing, or forwarding the materials to libraries or reading rooms is prohibited.