Plumbers' technical note – Pipe sizing and commissioning

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All documents issued prior to 1 July 2017 were issued by the former Department of Commerce. Documents listed here are the latest versions available, but may be subject to review. For more information on this document, please contact online@dmirs.wa.gov.au.

This publication is for: 
Plumber

With the increasing demand on our drinking water supply, the necessity to conserve water in our drying climate and the requirement to comply with the 2003 edition of the plumbing standards AS/NZS 3500, it is vitally important to pipe size the supply of cold water to all outlets correctly.

Building Commission
Technical standards
Last updated 22 May 2014

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