The New Zealand Building Code is performance-based. It states how a building must perform in its intended use rather than describing how the building must be designed and constructed. Compliance with an acceptable solution or verification method is one way for establishing compliance with the building code but it is not the only means.
If your fire safety design does not use an acceptable solution as a means of compliance, then specific fire engineering analysis is required to establish compliance with the building code using a verification method or an alternative solution.
A fire engineering brief (FEB) process is an internationally recognised fire engineering practice for defining the scope of work and design basis for the fire engineering analysis. This process involves an early discussion between key stakeholders on the project scope, analysis methodologies, design acceptance criteria and any potential regulatory constraints.