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Systems Model for Water Supply Following Earthquakes

by C. H. Trautmann, Cornell Univ, Ithaca, NY, USA,
T. D. O'Rourke, Cornell Univ, Ithaca, NY, USA,
M. Grigoriu, Cornell Univ, Ithaca, NY, USA,
M. M. Khater, Cornell Univ, Ithaca, NY, USA,



Document Type: Proceeding Paper

Part of: Lifeline Seismic Risk Analysis?Case Studies

Abstract:

The water supply for San Francisco is described with emphasis on the city's auxiliary water distribution network, which provides fire protection for the most heavily built-up areas. An analytical model for the system is described, and model flow simulations are compared with the results of special flow tests conducted by the San Francisco Fire Department. Performance criteria for the water supply system are defined by specified levels of flow and pressures at locations of predicted fire outbreak. Pipeline damage statistics are summarized. A fragility curve for the San Francisco system is given in which the efficiency of providing water for extinguishing fires is plotted as a function of the mean pipeline break rate.

Subject Headings: Water supply systems | Water supply | Water pipelines | Water conservation | Pipe networks | Flow simulation | Earthquakes | California | United States

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