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Audio, Radio New Zealand

A review of the week's headline news including: 123 jobs at KiwiRail's engineering workshops in Dunedin hang in the balance; SkyCity's Chief Executive is defending gaming options at its Auckland casino; orthopaedic surgeons say they're working hard to determine exactly how many New Zealanders have a hip replacement system that's been recalled; tobacco companies are vowing to fight a government plan to remove branding from cigarette packets; the rebuild of central Christchurch has been taken out of the control of the City Council and will now be managed by a newly formed unit within the Government's Earthquake Recovery Authority (CERA); Trade Me's decision to open up the site to overseas retailers is ruffling a few feathers and; Hamilton singer Kimbra's hit number one in the US.

Research papers, The University of Auckland Library

The 2010/2011 Canterbury earthquakes have provided a unique opportunity to investigate the seismic performance of both traditional and modern buildings constructed in New Zealand. It is critical that the observed performance is examined and compared against the expected levels of performance that are outlined by the Building Code and Design Standards. In particular, in recent years there has been a significant amount of research into the seismic behaviour of precast concrete floor systems and the robustness of the support connections as a building deforms during an earthquake. An investigation of precast concrete floor systems in Christchurch has been undertaken to assess both the performance of traditional and current design practice. The observed performance for each type of precast floor unit was collated from a number of post-earthquake recognisance activities and compared against the expected performance determined for previous experimental testing and analysis. Possible reasons for both the observed damage, and in some cases the lack of damage, were identified. This critical review of precast concrete floor systems will assist in determining the success of current design practice as well as identify any areas that require further research and/or changes to design standards.