The NCC 2019 - Vol 1 is a performance-based code containing all Performance Requirements for the construction of buildings. Built around a hierarchy of guidance and code compliance levels, Performance Requirements are the minimum level that buildings and building elements must meet. A building solution will comply with the NCC if it satisfies the mandatory Performance Requirements.
Performance Requirements are also supported by General Requirements, which cover other aspects of applying the NCC, including its interpretation, reference documents, the acceptance of design and construction and building classification within the NCC.
The key to the performance-based NCC is that there is no obligation to adopt any particular material, component, design factor or construction method, providing a choice of compliance pathways. The Performance Requirements can be met using either a Performance Solution (Alternative Solution), a Deemed-to-Satisfy (DTS) Solution or a combination of solutions.
A Performance Solution is unique for each project, deemed to provide flexibility in achieving the outcomes and aim to encourage innovative design and technology use by using one or more of the Assessment Methods available.
- Evidence of suitability that shows the use of a material or product, a form of construction or design meets the relevant Performance Requirements.
- A Verification Method, including the following:
- The Verification Methods provided in the NCC.
- Other Verification Methods, accepted by the appropriate authority that show compliance with the relevant Performance Requirements.
- Expert Judgement.
- Comparison with the Deemed-to-Satisfy Provisions.
A Deemed-to-Satisfy Solution follows a set recipe of what, when and how to do something. It uses the Deemed-to-Satisfy Solutions from the NCC, which include materials, components, design factors, and construction methods that, if used, are deemed to meet the Performance Requirements.
A Deemed-to-Satisfy Solution can show compliance with the Deemed-to-Satisfy Provisions through one or more of the following Assessment Methods:
- Evidence of suitability that shows the use of a material or product, a form of construction or design meets a Deemed-to-Satisfy Provision.
- Expert Judgement.