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Images, UC QuakeStudies

A photograph submitted by Sam Langley to the QuakeStories website. The description reads, "Cracks on the floor of my local supermarket. Amazingly they were open within 36 hours of both big quakes.".

Research papers, University of Canterbury Library

A seismic financial risk analysis of typical New Zealand reinforced concrete buildings constructed with topped precast concrete hollow-core units is performed on the basis of experimental research undertaken at the University of Canterbury over the last five years. An extensive study that examines seismic demands on a variety of multi-storey RC buildings is described and supplemented by the experimental results to determine the inter-storey drift capacities of the buildings. Results of a full-scale precast concrete super-assemblage constructed and tested in the laboratory in two stages are used. The first stage investigates existing construction and demonstrates major shortcomings in construction practice that would lead to very poor seismic performance. The second stage examines the performance of the details provided by Amendment No. 3 to the New Zealand Concrete Design Code NZS 3101:1995. This paper uses a probabilistic financial risk assessment framework to estimate the expected annual loss (EAL) from previously developed fragility curves of RC buildings with precast hollow core floors connected to the frames according to the pre-2004 standard and the two connection details recommended in the 2004 amendment. Risks posed by different levels of damage and by earthquakes of different frequencies are examined. The structural performance and financial implications of the three different connection details are compared. The study shows that the improved connection details recommended in the 2004 amendment give a significant economic payback in terms of drastically reduced financial risk, which is also representative of smaller maintenance cost and cheaper insurance premiums.

Images, eqnz.chch.2010

This building on Lichfield Street lost the top floor of its facade during the magnitude 7.1 earthquake that struck Christchurch on Saturday 4 September 2010.

Images, UC QuakeStudies

An emergency and security staff member is pictured with a walkytalky, safety goggles, and hard hat, preparing to enter the 6th floor of the Registry building to retrieve work from the offices- with attitude.

Images, UC QuakeStudies

A photograph submitted by Sarndra to the QuakeStories website. The description reads, "Suspended ceiling not looking too healthy in New World, Stanmore Road. The interior floor wasn’t all the best either. 9 March 2011".