The NCC (formerly the Building Code of Australia) is published in 3 volumes -
Pertains primarily to Class 2 to Class 9 buildings. (refer to 'Classification of Buildings' link.)
Pertains primarily to Class 1 and Class 10 buildings - houses, sheds, carports etc.
Pertains primarily to plumbing and drainage associated with all classes of buildings.
All volumes are drafted in a performance format to provide greater flexibility for the use of new and innovative building products, systems and designs.
Users may choose to comply with the 'deemed to satisfy' provisions or may use an 'alternative solution' that satisfies the performance requirements.
The NCC is a uniform set of technical provisions for the design and construction of buildings and other structures throughout Australia. It allows for variations in climate and geological or geographic conditions.
Any provisions in the NCC may be overridden by State or Territory legislation and therefore should be read in conjunction with any such legislation. Variations are listed within the NCC.
Volume 2, relating to 'homes', covers items such as site preparation, footings and slabs, masonry, framing, roof and wall cladding, glazing, fire safety, health and amenity, safe movement and access, energy efficiency.
Individual sections as well as documenting requirements etc may reference an Australian Standard to meet a 'performance requirement' - for example 'Swimming Pool Access' within part 3.9 Safer Movement and Access in part reads . . . 'with a depth of water more than 300mm satisfies if it has a safety barrier installed in accordance with AS1926 parts 1 and 2'.
Part 3.4.3 Timber Framing in part reads . . . 'performance requirement is satisfied for a timber frame if it is designed and constructed in accordance with either AS1684.2 Non Cyclone Areas or AS1684.4 Simplified - Non Cyclone Areas etc.
The NCC, either separately or in conjunction with a referenced Australian Standard, form the basis for construction requirements and design documentation.
The complete National Construction Code series, or separate volumes, can be downloaded from the Australian Building Codes Board website.