SEISMIC RESILIENCE
l Ease of mitigation: Practicality, in time and cost, of mitigating or remediating the element.
These aspects combine to provide an overall prioritisation for remediations to reduce overall risk. This is a broad triaging approach,
where it is generally expected that not all services will be able to be brought to full compliance with the latest regulations, but that significant risk reductions could be achieved with more moderate interventions. A comparable risk-based approach is
proposed in the Seismic Resilience of Hospital Buildings report.
Future directions Looking forward at the likely developments in hospital design and retrofit in the upcoming decade, we consider that there are a few areas likely to be at the forefront of new developments: l Increasing improvement in in-ceiling coordination. Pulling forward the seismic restraint design to work in parallel with the services design, and the early integration into the BIM model, is driving the adoption of much more construction friendly design. We expect this trend to continue, and ultimately result in significantly
improved coordination and reduced construction times.
l Increased availability of model data for costing and asset management purposes. Driven by the model centric nature of seismic restraint design.
l Increasing use of technological solutions in retrofit of existing structures. Particularly the use of viscous fluid dampers to upgrade buildings with low seismic performance. Viscous dampers have always been an effective retrofit solution, as they reduce demands on existing structures, rather than merely brute forcing in more strength. Recent developments in damper analysis are allowing significantly more cost- effective solutions to be developed. An increasing emphasis on the carbon savings of re-using existing buildings means the use of these types of solutions will continue to grow.
l Increasing use of post-earthquake response systems. Systems such as Beacon combine and connect. Asset management data about building
vulnerability, live seismic monitoring data, and client emergency response plans into a rapid notification system available to a wide range of staff. Already with wide adoption within the commercial sector, we are now seeing increasing uptake within the public sector for facilities with post-disaster function and expect this to increase. IFHE
References 1 Kestrel Group. Understanding and Improving the Seismic Resilience of Hospital Buildings (June 2022) [
https://www.newdunedinhospital.nz/ assets/Publications/Proactive-releases/ Kestrel-HIU-Seismic-Resilience-Technical- Report-20220603.pdf].
2 New Zealand Society of Earthquake Engineering. Guideline for the Design of Seismic Isolation Systems for Buildings (2019) [
https://www.nzsee.org.nz/wp- content/uploads/2019/06/2825-Seismic- Isolation-Guidelines-Digital.pdf].
3 Standards New Zealand: NZS1170.5 Structural Design Actions.
Much of New Zealand’s original hospital stock was built prior to modern seismic design standards
IFHEDigest Providing insights into the vast field of healthcare engineering and facility management IFHE DIGEST 2024 87
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