Silvester Clark were the seismic restraint design engineers for the Importance Level 4 (IL4) Acute Services Building at Christchurch Hospital. Our scope included the design and documentation of seismic restraints for all plant and equipment, both suspended and floor-mounted, to ensure the hospital’s continued operation in the event of a serviceability limit state 2 (SLS2) earthquake.
We documented seismic restraints for over 21,000 items using a 3D Building Information Model (BIM) in Revit, and coordinated with other project disciplines to optimize the design using off-the-shelf products and systems. In addition to designing restraints, we reviewed the seismic qualifications and verification details provided by suppliers to confirm that the equipment would remain operational after an SLS2 earthquake, allowing the 10-storey hospital building to treat injured Cantabrians effectively.
Our scope also included construction monitoring to CM4 level using the software package PlanGrid, which involved inspecting and maintaining photographic inspection records of every seismic restraint. The installation review was covered by our PS4 Construction Review Producer Statement.
This project involved an eight-storey, base-isolated building with a three-storey podium level and two towers, making it one of the largest seismic restraint projects ever undertaken in New Zealand.
Completed:
2020
Contractor:
CPB Contractors Pty Ltd
