A performance based design brief or better known as PBDB is a document that is prepared in consultation with key stakeholders as part of the proposed design and approval process for performance-based projects. When completed, the PBDB becomes the platform on which the planned design is built.

The Performance Based Design Brief is used to track key actions and results of the performance-based design process, as negotiated among significant stakeholders. When the PBDB is complete, all crucial tasks and results would have been discovered. Consequently, there is a high degree of confidence that the design process can start. The proposed design is likely to be accepted as long as the PBDB's standards are met.

Each performance solution is distinct, therefore each proposal will call for a certain analysis, modelling, or relevant testing procedure for its complexity. So for assurance, a performance solution must be compiled and assessed based on a few or all of the Assessment procedures. Any analytical evaluation should be finished as per the PBDB.

Although some people are already aware of the fundamental procedure. Since it is now available to everyone, a formalised procedure has been developed, which will give the business better direction and create a level playing field.

Each process may call for a particular set of inputs and outputs. It is crucial that any possible factors in the agreed-upon evaluation methods are determined at the procedure for consulting stakeholders, which is recorded inside the PBDB before the activity starts. Ultimately, A review of the agreed-upon analytical procedures may be necessary. Initial results do not satisfy the established acceptance standards.

These are the main PBDB facts you need to be aware of. In cooperation with the relevant project participants, such as the owner, builder, architect, project manager, ESD consultant, fire engineer, or compliance specialist, the first phase is to scope out the Performance Solution. Of course, this has already been done; this step only formalises stakeholder consent. It summarises the project team's comprehension of the essential components of the Performance Solution and how they plan to satisfy the NCC Performance Requirements.

The analysis comes next, in which it is determined which Performance Solution best meets the Performance Requirement. When using mass timber and NCC requirements demand that specific fire safety standards must be fulfilled, for instance, this could be qualitative, quantitative, involve more complex modelling, or even real physical testing.

The National Construction Code (NCC), an Australian performance-based code, establishes the minimal standards for a building's safety, healthcare, amenity, accessibility, and sustainability. The Governing Requirements and the Performance Requirements of the NCC must be followed in order to comply with the NCC. The only NCC technical requirements that must be met are Performance Requirements, which specify the minimal requirements that various buildings or building elements must meet.

The results are then clarified and evaluated to see if they satisfy the appropriate Performance Requirements using the analysis of the chosen Performance Solution.

Step 3 is strongly related to Step 2 of the analysis, which focuses on evaluation. This is basically formalising a process to compile data, review against the essential Performance Requirements, and get ready for reporting since it is often analysed when performing an analysis.

Possibly self-explanatory, but nonetheless important. Lastly, PBDBs bring everything together and offer the paperwork that will be given to the consent authority.

The PBDB must receive the approval of all parties participating in the process. Since this hasn't usually been done in the past, the importance of this requirement is probably directly related to how complicated the Performance Solution is.