The Christchurch Justice and Emergency Precinct has four buildings connected by a podium at level one, where the base isolators have been installed. The red lines show this isolation plane. The Tx and Tz values are the building structural periods of vibration in each horizontal direction east-west/north-south, i.e. how long the building takes to sway from one side to the other side and back again to the start
Image from: Pettinga, D and Oliver, S. Aspects of design for the base isolated Christchurch justice and emergency services precinct [online]. SESOC Journal, Vol. 29, No. 2, Sep 2016: 29-35. ISSN: 0114-2879.
