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Use of GIS to rationalise pressure in water supply systems

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Show simple record Fernando, Achela Zhang, Xiujuan Brown, N. 2012-06-20T23:03:10Z 2012-06-20T23:03:10Z 2007
dc.description.abstract Water is a valuable resource needing conservation. Excessive water pressure in water distribution systems causes leakages leading to substantial losses of treated water. It also places additional strain on networks reducing their efficiency and increasing annual maintenance costs. Conversely, too low a water pressure can be an inconvenient annoyance to the user and, more importantly, mean inadequate conditions to meet fire fighting requirements. The North Shore City Council (NSCC) in Auckland, is not free from the aforementioned pressure-related problems. This paper summarises the outcome of a study undertaken, using GIS technology, to identify areas with potential pressure problems and suggest options for consideration to resolve pressure issues with the intension of (a) reducing water losses, (b) providing customer satisfaction, (c) ensuring fire-fighting readiness, and (d) making long term savings by strategic capital investment in the water supply network of the NSCC. First, the clusters of properties with potential pressure problems were identified. A sensitivity analysis was carried out to determine the optimum pressure for the key zones to minimise the number of properties affected by either low or high pressure issues. Then, the optimum pressure for each user was determined while ensuring (a) a minimum supply head of 30m for each property, (b) a maximum static head of 90m, (b) no property experiences a reduction in pressure exceeding 30m as a result of the implementation of the remedial measures suggested, and (c) a minimum residual pressure of 10m at fire hydrants during fire-fighting. Finally, a range of suggestions ranging from pressure zone boundary adjustments to sample designs that can eventually lead to potential capital expenditure are made. en_NZ
dc.language.iso en en_NZ
dc.publisher Tour Hosts Pty Ltd en_NZ
dc.subject Geographic information systems en_NZ
dc.subject GIS en_NZ
dc.subject Water pressure en_NZ
dc.subject Water distribution en_NZ
dc.title Use of GIS to rationalise pressure in water supply systems en_NZ
dc.type Conference Contribution - Paper in Published Proceedings en_NZ
dc.rights.holder Authors en_NZ
dc.subject.marsden 090509 Water Resources Engineering en_NZ
dc.identifier.bibliographicCitation Fernando, A., Zhang, X., & Brown, N. (2007). Use of GIS to rationalise pressure in water supply systems. In P. Coombes, J. Dahlenburg, & M. Han (Eds.), Proceedings of the Rainwater and Urban Design 2007 Conference (CD Rom ed.). Sydney: Tour Hosts Pty. Limited. en_NZ
unitec.institution Unitec Institute of Technology en_NZ
unitec.institution North Shore City Council en_NZ
unitec.publication.title Proceedings of the Rainwater and Urban Design 2007 Conference en_NZ
unitec.conference.title Rainwater and Urban Design 2007 en_NZ International Rainwater Catchment Systems Association en_NZ
unitec.conference.location Sydney en_NZ
unitec.conference.sdate 2007-08-21
unitec.conference.edate 2007-08-23
unitec.peerreviewed yes en_NZ

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