Use of GIS to rationalise pressure in water supply systems
Loading...
Supplementary material
Other Title
Authors
Fernando, Achela
Zhang, Xiujuan
Brown, N.
Zhang, Xiujuan
Brown, N.
Author ORCID Profiles (clickable)
Degree
Grantor
Date
2007
Supervisors
Type
Conference Contribution - Paper in Published Proceedings
Ngā Upoko Tukutuku (Māori subject headings)
Keyword
Geographic Information System (GIS)
GIS mapping
water pressure
water distribution
GIS mapping
water pressure
water distribution
ANZSRC Field of Research Code (2020)
Citation
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.
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.
Publisher
Tour Hosts Pty Ltd
Permanent link
Link to ePress publication
DOI
Copyright holder
Authors
Copyright notice
All rights reserved