The recent Kaikoura earthquake is a timely reminder of the need to ensure good performance of non-structural and secondary structural elements.
MBIE has released two new practice advisories in response to instances of poor performance of non-structural and secondary structural elements in buildings subjected to Canterbury and 2013 Wellington earthquakes. The practice advisories may be updated in the future following lessons from the 14 November earthquake.
The new practice advisories are:
- Practice Advisory 19: Improving earthquake performance of non-structural elements
- Practice Advisory 20: Improving earthquake performance of secondary structural elements
Practice Advisory 19 encourages early engagement of stakeholders and the coordination of design and construction activity. It identifies the Building Code requirements and the relevant building standards and recommends structural engineering advice including construction monitoring to achieve effective details.
Practice Advisory 20 alerts building professionals to the need for careful design detailing and construction monitoring of secondary structural elements, such as precast panels and stairs. The Building Code requirements and relevant building standards are identified.
From Codewords, November 2016
Standards referenced in Practice Advisories 19 and 20:
- NZS 1170.5:2004 Structural design actions Part 5: Earthquake actions - New Zealand
- AS/NZS 2785:2000 Suspended ceilings – Design and installation
- NZS 3101 Parts 1 and 2:2006 Concrete structures standard
- NZS 3404.1:2009 Steel structures standard
- NZS 3404 Parts 1 and 2:1997 Steel structures standard
- NZS 3603:1993 Timber structures standard
- NZS 4230:2004 Design of reinforced concrete masonry structures
- AS/NZS 4600:2005 Cold-formed steel structures
- NZS 4104:1994 Seismic restraint of building contents
- NZS 4219:2009 Seismic performance of engineering systems in buildings
- NZS 4541:2013 Automatic fire sprinkler systems