![]() ![]() Since then, design requirements have increased with research and increased understanding. Existing buildingsĮarthquake standards were first introduced in 1979. Structural engineering input is required to allow for inter-storey drift on multi storey buildings and engagement with manufacturers and suppliers on architectural, electrical and mechanical components and systems to ensure they have the required performance characteristics to accommodate expected earthquake actions.īuilding surveyors should be considering that the design addresses seismic action and documentation adequately specifies components and covers detailing to AS1170.4. Builders are responsible for ensuring that the buildings they construct comply with the requirements of AS1170.4 and all non-structural elements have been properly considered for earthquake loads in their design and to manage complying installation on site. The Australian Building Codes Board (ABCB) also cover this topic: Design of non-structural building elements for earthquake forces Practitioner responsibilitiesĪll parties involved in the design and construction of buildings have a responsibility to ensure compliance with the building regulations.ĭesigners need to consider appropriate detailing and specification. Copyright in AS1170.4 - 2007 vests in Standards Australia Limited and Standards New Zealand. Reproduced with permission of Standards Australia Limited. Lift and hoist components including structural frames.Anchorage of lift machinery and controllers.Boilers, furnaces, incinerators, water heaters and other equipment using combustible energy sources or high energy sources.The following mechanical and electrical components are required to be designed for earthquake loads: Architectural equipment including storage racks and library shelves with a height over 2.0m.Connections for wall attachments, curtain walls, exterior non-loadbearing walls.Appendages, including parapets, gables, verandas, awnings, canopies, chimneys, roofing components, containers and miscellaneous components.Walls not part of the seismic-force-resisting system.The following architectural components are required to be designed for earthquake loads: Non-structural components and their fastenings must be designed for horizontal and vertical earthquake forces in accordance with AS 1170.4 Clause 8. Design considerations Structural componentsĪll structures must be configured with a seismic force resisting system that has a clearly defined load path, or paths that will transfer the earthquake actions generated in the earthquake, together with gravity loads, to the supporting foundation soil.Īll parts of the structure must be tied together both in the horizontal and vertical planes so that forces generated by an earthquake from all parts of the structure, including structural and other parts of the components are carried to the foundation. The Deemed-to-Satisfy Provisions of the NCC require buildings to be designed and constructed in accordance with Australian Standard (AS) 1170.4 – 2007, Structural design actions - Earthquake actions in Australia.Īll buildings must comply with AS 1170.4, except for some domestic Class 1a or 1b buildings less than 8.5m in height that comply with the applicable design standards and Appendix A, or for Importance Level 1 buildings (minor isolated structures that rarely contain people). The Performance Requirements for structure in the Building Code of Australia (BCA) Volume One and Two requires buildings to perform adequately under all reasonable expected and extreme design actions, including earthquake actions. The content below provides guidance on the following matters: In addition, building owners and facility managers should consider an out of cycle, post-earthquake Essential Safety Measures (ESM) maintenance inspection to ensure all safety systems required for the building are maintained and working at the required operational level. This guidance page outlines the requirements for earthquake design, construction and post-earthquake maintenance of buildings.Įarthquakes in Victoria over recent years should remind the building industry of the importance of ensuring buildings are designed and constructed to comply with the requirements of the National Construction Code (NCC), Volume One and Volume Two.
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