Residential green zone technical categories
Land in the green zone has been divided into three technical categories – TC1 (grey), TC2 (yellow) and TC3 (blue).
These categories describe how the land is expected to perform in future earthquakes, and also describe the foundation systems most likely to be required in the corresponding areas.
In this section:
- Overview of the TC1, TC2, TC3 and "not-applicable" technical categories
- Community meetings
- MBIE Building & Housing Group guidelines
- Earthquake Commission (EQC) TC3 drilling programme