Technical Report - The Performance of Unreinforced Masonry Buildings in the 2010-2011 Canterbury Earthquake Swarm

Posted 08 Sep 2011 by RoyalCommission Popular

The Commission sought the advice of Associate Professor Jason Ingham from Auckland University and Professor Michael Griffith from Adelaide University on the Performance of Unreinforced Masonry Buildings in the 2010-2011 Canterbury Earthquake Swarm. Unreinforced masonry is defined as a construction of clay brick or natural stone units bound together using lime or cement mortar, without any reinforcing elements such as steel reinforcing bars.

The report discusses the architectural characteristics and seismic vulnerability of unreinforced masonry buildings in New Zealand, makes observations about the performance of such buildings in the Canterbury earthquakes and available techniques for seismic upgrading. Section 7 recommends certain structural elements of all unreinforced masonry buildings be improved to meet the standard for new buildings and that other elements be improved to meet at least 67% of the standard required for new buildings. The authors also recommend that there be one national standard instead of policies being set by individual territorial authorities.

Due to the size of the report, it is divided into the following segments:

Submissions

Submissions must be received by 14 October 2011.

Peer Reviews

To ensure that advice given to the Commission reflects international understandings and best practice, this report will be peer reviewed separately by:

Both peer reviews will be published on this website when they are available.

Discussion

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