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AU Regulations 2

Australian/New Zealand Standard AS/NZS 3500.2:2003

AS/NZS 3500.2:2003 (Plumbing and drainage – Part 2: Sanitary plumbing and drainage) was published in December 2003 and amended in November 2005. Applying to new installations as well as alterations, additions or repairs to existing installations, the standard specifies the requirements for the design and installation of sanitary plumbing and drainage from the fixtures to a sewer, common effluent system or an on-site wastewater management system, as appropriate.

Table 6.1 provides a table detailing the fixture unit ratings for all fixtures, which are to be used for the sizing of drains, stacks and graded discharge pipes. Section 6.9 of the standard provides the guidelines for how Air Admittance Valves (AAVs) may be used.

Section 6.10 was added as part of the November 2005 amendment, and provides guidelines on how devices to attenuate positive pressure transients in plumbing stacks, i.e. the P.A.P.A. (Positive Air Pressure Attenuator), may be used.