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 Green Star Technical Clarification Rulings

Technical Clarifications for Green Star represent our answers to Technical Questions submitted by projects, and provide further guidance and reference to others. The list is regularly updated.  

There are two types of Technical Clarifications listed in the table below:

General Clarifications

These are extensions to the guidance provided in the Submission Guidelines. They clarify and sometimes supersede the original Credit Criteria or 
Compliance Requirements. General Clarifications set precedent for future project teams to follow. Should a project team wish to apply a general clarification to its project, there is no requirement for further Technical Questions to be submitted. NZGBC Assessors will also use them as precedents to assess submissions.

Project Specific Clarifications

These are published as references for other projects but, unlike General Clarifications, they do not set precedent. They often relate to special 
situations where multiple prerequisites exist for a particular project and are less likely to reoccur to another project. Therefore, rulings set for Project Specific Clarifications are often conditional and will likely vary for other projects. Each project still needs to submit its own Technical Questions and provides evidence relating to its own building in order to have a similar ruling approved for that specific building. 

Should you wish to apply any Technical Clarification for legacy rating tools to your projects, please submit a Technical Question to the NZGBC to 
explain why and how it applies. You can access the online Technical Question form here

Technical Question Title Tool Version Date Released Credit Name Sub-credit Name TC Link
‘Warm Charging’ Technology DABv1 May 2022 20 - Responsible Building Materials Structural and Reinforcing Steel
Approved Ruling:

‘Warm Charging’ technology is considered an energy-reducing process in steel reinforcement production and project teams may demonstrate compliance with Energy-Reducing Processes in Steel Reinforcement in the Green Star – Design & As Built Rating tool on the condition that:

  • The steel manufacturer has had their ‘warm charging’ process peer reviewed by an independent third party LCA Practitioner and agrees to comply with any recommendation made by the peer reviewer; and
  • The steel manufacturer provides annual updates on the process that are publicly available, to help educate the wider industry on the benefits of warm technology process. 

The benchmarks for steel reinforcement quantities remain as per the Submission Guideline whereby at least 60% (by mass) of all reinforcing bar and mesh is produced using energy-reducing processes in its manufacture.