Building Code of Australia Assessment Methods
Assessment Methods are used to determine whether a building solution complies with the relevant Performance Requirements of the BCA.
Options for compliance have been discussed in the page titled What are Alternative Solutions in the Building Code of Australia?, but to summarise, the options include complying with the ‘Deemed-to-Satisfy’ provisions, an ‘Alternative Solution’ that meets the relevant Performance Requirements or a combination of both.
The Assessment Methods described in the BCA are listed below:
Evidence of Suitability
A2.2 in Volume One and 1.2.2 in Volume Two allow the following evidence to be submitted in support of a proposal that a material, form of construction or design meets a Performance Requirement or a Deemed-to-Satisfy Provision:
- A report from a Registered Testing Authority.
- A current Certificate of Conformity or Certificate of Accreditation.
A certificate from a professional engineer.
A current certificate issued by a product certification body that has been accredited by the Joint Accreditation System of Australia and New Zealand (JAS-ANZ).
- Any other form of documentary evidence that adequately demonstrates suitability for use.
Verification Methods include:
- Calculations – using analytical methods or mathematical models; and/or
- Tests – using a technical operation either on-site or in a laboratory to directly measure one or more performance criteria of a given solution.
Comparison with the Deemed-to-Satisfy Provisions
This method allows a comparison to be made between a ‘Deemed-to-Satisfy’ provision and a proposed Building Solution (including ‘Alternative Solutions).
If the performance assessment determines that the proposed building solution complies in an ‘equivalent’ or it exceeds a ‘Deemed-to-Satisfy’ provision, then it can be deemed to meet the relevant Performance Requirement.
Where physical criteria are unable to be tested or modelled by calculation, the opinion of a technical expert may be accepted.
This is referred to as the use of Expert Judgement, that is, the judgement of a person who has the qualifications and experience necessary to determine whether a Building Solution complies with the Performance Requirements. Please read this page cautioning the use of Expert Judgement for access related ‘Alternative Solutions’
Read on about Performance and the Premises Standards
By Lee Wilson, Disability Access Consultant / DDA Consultant, Melbourne, Victoria. Lee is an Accredited Member of the Association of Consultants in Access, Australia Inc.