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Audio, Radio New Zealand

The Prime Minister Chris Hipkins today announced an additional three hundred and one million dollar boost for the rebuild of earthquake damaged Christchurch schools, and said the programme in Christchurch may be a template for repairing flood damaged schools in the North Island. Some schools are still waiting to be repaired more than a decade after the devastating quakes. On his first visit to Christchurch since becoming Prime Minister, Chris Hipkins visited one of the schools still in the midst of its rebuild process, and to celebrate the progress being made. Our reporter Rachel Graham and videographer Nate McKinnon went along. 

Research papers, University of Canterbury Library

This study analyses the Earthquake Commission’s (EQC) insurance claims database to investigate the influence of seismic intensity and property damage resulting from the Canterbury Earthquake Sequence (CES) on the repair costs and claim settlement duration for residential buildings. Firstly, the ratio of building repair cost to its replacement cost was expressed as a Building Loss Ratio (BLR), which was further extended to Regional Loss Ratio (RLR) for greater Christchurch by multiplying the average of all building loss ratios with the proportion of building stock that lodged an insurance claim. Secondly, the total time required to settle the claim and the time taken to complete each phase of the claim settlement process were obtained. Based on the database, the regional loss ratio for greater Christchurch for three events producing shakings of intensities 6, 7, and 8 on the modified Mercalli intensity scale were 0.013, 0.066, and 0.171, respectively. Furthermore, small (less than NZD15,000), medium (between NZD15,000 and NZD100,000), and large (more than NZD100,000) claims took 0.35-0.55, 1.95-2.45, and 3.35-3.85 years to settle regardless of the building’s construction period and earthquake intensities. The number of claims was also disaggregated by various building characteristics to evaluate their relative contribution to the damage and repair costs.

Images, eqnz.chch.2010

Red stickered building means no access, and the building may be condemned if it cannot be repaired; aftermath of the magnitude 7.1 earthquake that hit Christchurch on 4 September 2010.

Other, National Library of New Zealand

Lawrence Roberts' blog for those living in Cowlishaw Street, Chaddesden Lane, Patten Street, Retreat Road and close by. Includes information and news on earthquake assessment, repairs/rebuilding and related matters; and photo gallery.

Articles, UC QuakeStudies

A photograph captioned, "After the September earthquake, it was more a simple case of something gets broken and it gets repaired. Then came February, and June as well, and suddenly it's just not so straightforward anymore".

Images, eqnz.chch.2010

Repairs being carried out on this restaurant (converted from a church) at the Hereford Street / Manchester Street intersection;aftermath of the magnitude 7.1 earthquake that struck Christchurch on Saturday 4 September 2010.

Images, eqnz.chch.2010

This beautiful building on Madras Street is red stickered and may be condemned if the structural damage it suffered in the magnitude 7,1 earthquake on Saturday 4 September 2010 cannot be repaired.

Images, eqnz.chch.2010

This beautiful building on Madras Street is red stickered and may be condemned if the structural damage it suffered in the magnitude 7,1 earthquake on Saturday 4 September 2010 cannot be repaired.

Images, eqnz.chch.2010

Yellow stickered building means restricted access, and the building will need to be repaired and certified fit for use; aftermath of the magnitude 7.1 earthquake that hit Christchurch on 4 September 2010.

Images, eqnz.chch.2010

This beautiful building on Madras Street is red stickered and may be condemned if the structural damage it suffered in the magnitude 7,1 earthquake on Saturday 4 September 2010 cannot be repaired.

Articles, Christchurch uncovered

During recent earthquake repairs at a residential property on well-known Sumner Road in Lyttelton, our archaeologists uncovered a small assemblage of artefacts that represented everyday Victorian household items. At first glance these appeared a somewhat ordinary – but when Lydia … Continue readi...

Images, Alexander Turnbull Library

Text reads 'Solution to Christchurch sewage problems?...' A woman, with a roll of toilet paper in her hand, climbs a ladder to a toilet that is positioned on a sewage pipe high above the ground. There are further toilets at intervals on the pipe. Her husband stands in the garden and observes that it is 'Easy to access and easy to repair'. Context - the Christchurch earthquakes and continuing aftershocks have done huge damage to sewage infrastructures which suggests having the pipes above ground as a solution. Quantity: 1 digital cartoon(s).

Research papers, University of Canterbury Library

In order to provide information related to seismic vulnerability of non-ductile reinforced concrete (RC) frame buildings, and as a complementary investigation on innovative feasible retrofit solutions developed in the past six years at the University of Canterbury on pre-19170 reinforced concrete buildings, a frame building representative of older construction practice was tested on the shake table. The specimen, 1/2.5 scale, consists of two 3-storey 2-bay asymmetric frames in parallel, one interior and one exterior, jointed together by transverse beams and floor slabs. The as-built (benchmark) specimen was first tested under increasing ground motion amplitudes using records from Loma Prieta Earthquake (California, 1989) and suffered significant damage at the upper floor, most of it due to lap splices failure. As a consequence, in a second stage, the specimen was repaired and modified by removing the concrete in the lap splice region, welding the column longitudinal bars, replacing the removed concrete with structural mortar, and injecting cracks with epoxy resin. The modified as-built specimen was then tested using data recorded during Darfield (New Zealand, 2010) and Maule (Chile, 2010) Earthquakes, with whom the specimen showed remarkably different responses attributed to the main variation in frequency content and duration. In this contribution, the seismic performance of the three series of experiments are presented and compared.