RELIABILITY-BASED DESIGN OF WATER-DISTRIBUTION SYSTEMS. TECHNICAL NOTE

The authors present a heuristic approach for reliability-based design of water-distribution systems (WDSs). Reliability is expressed by factors estimated during extended-period modeling using node-flow analysis that predicts the availability of water at different nodes during deficient conditions. This iterative approach considers pump and pipe failures only and is based on the trade-off between reliability and cost of the WDSs. Initially, a WDS is chosen and the ratio of marginal increase in reliability to marginal increase in cost (MIRMIC ratio) for each pipe by changing its size to the next higher one is assessed. Pipes with large MIRMIC ratios are selected for change to next higher size and the iterative process continues until a WDS of desired reliability is obtained. The approach is also appropriate for reliability-based upgrading of existing WDSs.

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  • English

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  • Accession Number: 00715337
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Jan 12 1996 12:00AM