Reliability-Based Strengthening and Expansion of Water Distribution Networks

An iterative method based on the trade-off between reliability and cost is proposed for strengthening and expansion of water distribution networks (WDNs) to obtain a level-one redundant network (i.e., a network that can sustain single pipe failure without affecting consumer services either in part or in full). Reliability is assessed using node and volume reliability factors which are evaluated considering the performance of WDNs under different conditions. Reliability of an existing network is improved at every iteration by either adding a parallel pipe of minimum size to one of the existing links, or increasing the size of one of the newly added (strengthened or expanded) pipes to the next higher size by considering the largest ratio of the marginal capacity factor to the marginal increase in cost. The method is initially illustrated by an example of a multisource network having time-varying demands. Then, a network in Washington, D.C. having multiple demand patterns is designed and the results are compared with those obtained by a linear-programming based algorithm.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/07339496
• Supplemental Notes:
  • Abstract reprinted with permission from ASCE
• Authors:
  • Agrawal, Magan Lal
  • Gupta, Rajesh
  • Bhave, Pramod R
• Publication Date: 2007-11

Language

• English

Media Info

• Media Type: Print
• Features: Figures; References; Tables;
• Pagination: pp 531-541
• Serial:
  • Journal of Water Resources Planning and Management
  • Volume: 133
  • Issue Number: 6
  • Publisher: American Society of Civil Engineers
  • ISSN: 0733-9496
  • Serial URL: http://ascelibrary.org/journal/jwrmd5

Subject/Index Terms

• TRT Terms: Structural strengthening; Water distribution structures; Water pipelines; Water supply structures
• Uncontrolled Terms: Pipe networks; System reliability
• Subject Areas: Design; Highways; Planning and Forecasting; I21: Planning of Transport Infrastructure;

Filing Info

• Accession Number: 01080828
• Record Type: Publication
• Files: TRIS
• Created Date: Nov 15 2007 10:40AM