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AS/NZS 3500.4:2025 specifies the requirements for the design, installation and commissioning of heated water services using drinking water or rainwater or a combination thereof. It includes aspects of the installation from the valves on the cold-water inlet to any cold-water storage tank or water heater and the downstream fixtures and fittings. It applies to new installations as well as alterations, additions and repairs to existing installations

Covering the design and construction of multi-residential, commercial, industrial and public assembly buildings.

Covering the design and construction of smaller scale buildings including houses, small sheds, carports and some associated structures.

Covering the design, construction and maintenance of plumbing and drainage systems in new and existing buildings.

A companion manual to Volume One. It is intended as a reference book for people seeking clarification, illustrations, or examples

This TECHnote discusses the requirements for microbial control in buildings and how these are addressed in NATSPEC.

This TECHnote addresses the selection of appropriate levels of insulation for piping, vessels and heat exchangers with curved surfaces.

Water sensitive urban design (WSUD) integrates planning and design of the urban water cycle, water supply, waste water, stormwater and groundwater management, urban design and environmental protection.

This TECHnote provides a checklist intended to assist the architect or building designer in the assessment of proposals for the design and installation of HVAC systems.

This TECHnote highlights design and construction issues for consideration and suggests suitable NATSPEC worksections for the documentation of living walls and roofs.