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 |
|---|---|---|---|---|---|
| Crushed Concrete Reused as Hardfill or Backfill | DABv1.1 | October 2023 | 22 - Construction and Demolition Waste, 19 - Life Cycle Assessment/Impacts | Percentage Benchmark | Link |
|
Approved Ruling: This new clarification on crushed concrete is related to the TQ issued on 8/22 which states: "Crushed concrete from a previous building on the same site directly reused (without being taken out from the site) for hardfill or backfill may claim points under credit 22 Construction and Demolition Waste, credit 19 Life Cycle Impacts and credit 21 Sustainable Products simultaneously, but not under the innovation category. Note that the project team should ensure the quality of the crushed concrete is suitably consistent as being reused for hardfill or backfill." Any project using the TQ above is given the following additional guidance: Credit 22: The estimated reused crushed concrete weight shall then be attributed to the Re-used weight under Credit 22.2B. The demolition contractor and any other contractors related to the C and D Waste are reminded they must have a valid Compliance Verification Summary or Disclosure Statement related to the C and D Waste Reporting Criteria if they are pursuing credit 22. To determine the amount of crushed concrete created on site the contractor must survey the stockpile of crushed concrete and estimate the weight using the Volume to Weight Conversion table from the C and D waste credit (Table 22.2). Photos shall be taken as evidence of the stockpile. |
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