BCA Section J Reports & JV3

BCA Section J Compliance Reports

All new commercial building projects are required to meet minimum regulatory energy efficiency standards. This is done via a Section J report or compliance assessment, which is used to demonstrate how a proposed building will comply with minimum energy efficiency standards in Section J of the NCC BCA Volume 1 (Building Code of Australia). The aim of Section J in the BCA is “to reduce greenhouse gas emissions by efficiently using energy”. Our Section J report service helps clients meet the requirements of Part J and ensures the best project outcomes.
BCA Section J Reports
GreenForm's Section J reports address the following areas:
  • Part J1 – Building Fabric
  • Part J2 – External Glazing
  • Part J3 - Building Sealing
  • Part J4 - Air Movement
  • Part J5 - Air-Conditioning and Ventilation Systems
  • Part J6 - Artificial Lighting and Power
  • Part J7 - Hot Water Supply
  • Part J8 - Access for Maintenance
All buildings from class 3-9 require a Section J report. Also note:
- For Class 4 buildings, both Section J and NatHERS assessments are required, and
- In NSW; Class 2 units/apartments also require BASIX and NatHERS certification.

The majority of simple and low percentage glazed buildings will comply with the Deemed-To-Satisfy (DTS) provisions of Section J. However for buildings with high percentages glazing, or where building fabric specifications as per DTS requirements do not suit the construction type, better outcomes may be found with JV3 Alternative Solution assessments.

JV3 ALTERNATIVE VERIFICATION SOLUTION

For buildings not complying with the DTS provisions of the BCA Section J method above, the alternative method of compliance is via a JV3 Alternative Solution, or Verification Using a Reference Building. This alternative verification method compares a DTS compliant “reference” building, against the design “proposed” building. The two buildings are modelled and simulated in computer software to determine the total energy consumption over a full year. When the “proposed” building outperforms the "reference" building (i.e uses less energy), it is deemed to comply with Section J of the BCA. Sample thermal model below.
Straight Section J assessments work well for simple buildings with minimal glazing. For most commercial projects however, JV3 is now considered the standard method of assessment to achieve cost effective compliance. There are many benefits to JV3 assessments. This is mainly derived from the ability of JV3's to consider the building as a whole, instead of individual components in isolation. This provides much greater design flexibility and the ability to trade performance between different building elements. This in turn result in building specifications that can provide huge savings in construction costs and ongoing running costs.

GreenForm is experienced in many varied commercial projects and can advise on the most suitable assessment method for your project to meet compliance. Ask us about our Section J reports and JV3 assessments in Wollongong and Geelong local areas. For more information Contact us today.