NCC 2022 Volume Three - Plumbing Code of Australia
Search the National Construction Code editions
B3
Part B3 Non-drinking water servicesPart B3 Non-drinking water services
Non-drinking water services must ensure that pipework water velocity does not exceed 3 m/s for more than 1% of the time that the water is required during the annual peak hour.
A non-drinking water service must be in accordance with AS/NZS 3500.1, subject to the following: