Show simple record

dc.contributor.authorFernando, Achela
dc.contributor.authorZhang, Xiujuan
dc.contributor.authorBrown, N.
dc.description.abstractWater 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.publisherTour Hosts Pty Ltden_NZ
dc.subjectGeographic Information System (GIS)en_NZ
dc.subjectGIS mappingen_NZ
dc.subjectwater pressureen_NZ
dc.subjectwater distributionen_NZ
dc.titleUse of GIS to rationalise pressure in water supply systemsen_NZ
dc.typeConference Contribution - Paper in Published Proceedingsen_NZ
dc.subject.marsden090509 Water Resources Engineeringen_NZ
dc.identifier.bibliographicCitationFernando, 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.institutionUnitec Institute of Technologyen_NZ
unitec.institutionNorth Shore City Councilen_NZ
unitec.publication.titleProceedings of the Rainwater and Urban Design 2007 Conferenceen_NZ
unitec.conference.titleRainwater and Urban Design 2007en_NZ
unitec.conference.orgInternational Rainwater Catchment Systems Associationen_NZ
dc.contributor.affiliationUnitec Institute of Technologyen_NZ
dc.contributor.affiliationNorth Shore CIty Council (New Zealand)en_NZ

Files in this item


This item appears in

Show simple record

© Unitec Institute of Technology, Private Bag 92025, Victoria Street West, Auckland 1142