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Images, UC QuakeStudies

A pothole in a road surface, showing tyre marks where a vehicle has driven through the hole. The photographer comments, "After the earthquake in Christchurch in February 2011 burst underground pipes and liquefaction caused unseen hollows under the road surfaces. Occasionally after all the rest have been exposed by traffic someone would find 'discover' a new one".

Images, UC QuakeStudies

A car drives across the damaged Dallington bridge. The bridge has visibly moved relative to the road, leaving a large gap, which road cones have been placed in. The photographer comments, "Service pipes snapped as the land sank but the bridge remained".

Images, UC QuakeStudies

A car drives across the damaged Dallington bridge. The bridge has visibly moved relative to the road, leaving a large gap, which road cones have been placed in. The photographer comments, "Service pipes snapped as the land sank but the bridge remained".

Images, UC QuakeStudies

A view across Wakefield Avenue in Sumner to several local businesses, including Sumner Asian Restaurant, KB's Bakery, Harcourt's and The Ruptured Duck Pizzeria and Bar. Metal pipes can be seen bracing the balcony and walls of the building housing Harcourt's and The Ruptured Duck. The building has been cordoned off by a safety fence, and large cracks are visible in its walls and cornice.

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).

Images, Alexander Turnbull Library

Text reads '150 great reasons to live in Christchurch'. Someone quotes 'It's only 250 metres to empty your chemical toilet'. An elderly woman trudges through the rain pushing a trolley on which is balanced her chemical toilet. Context - Following the Christchurch earthquake of 22 February 2011 when a great deal of damage was done to the sewage system because of broken pipes thousands of chemical toilets have been distributed but now there seems to be confusion over whether it is safe to use flushing toilets when the sewage system cannot support it or whether residents should still be using chemical toilets. Quantity: 1 digital cartoon(s).

Images, Alexander Turnbull Library

Text at the top reads 'Bob's next speech?... The cartoon shows Christchurch Mayor Bob Parker making a speech - 'We shall fight on the beaches... We shall fight in the liquefaction... We shall fight in the cracks... We shall fight on the falling rocks and in the sinkholes... We shall fight in the portaloos... We shall fight in the sewage pipes... We shall fight in the polluted waters and subsided streets... We shall fight in the heritage buildings including the Dux de Lux... We shall NEVER surrender! A man leans over a fence and yells 'Hey Bob... How about a rewrite..."We shall raise the white flag and shall get the hell out!"' Context - The continuing earthquakes and aftershocks are causing serious problems in Christchurch, both practical and emotional. Many people are considering leaving the city. Quantity: 1 digital cartoon(s).

Research papers, University of Canterbury Library

Surface rupture of the previously unrecognised Greendale Fault extended west-east for ~30 km across alluvial plains west of Christchurch, New Zealand, during the Mw 7.1 Darfield (Canterbury) earthquake of September 2010. Surface rupture displacement was predominantly dextral strike-slip, averaging ~2.5 m, with maxima of ~5 m. Vertical displacement was generally less than 0.75 m. The surface rupture deformation zone ranged in width from ~30 to 300 m, and comprised discrete shears, localised bulges and, primarily, horizontal dextral flexure. About a dozen buildings, mainly single-storey houses and farm sheds, were affected by surface rupture, but none collapsed, largely because most of the buildings were relatively flexible and resilient timber-framed structures and also because deformation was distributed over a relatively wide zone. There were, however, notable differences in the respective performances of the buildings. Houses with only lightly-reinforced concrete slab foundations suffered moderate to severe structural and non-structural damage. Three other buildings performed more favourably: one had a robust concrete slab foundation, another had a shallow-seated pile foundation that isolated ground deformation from the superstructure, and the third had a structural system that enabled the house to tilt and rotate as a rigid body. Roads, power lines, underground pipes, and fences were also deformed by surface fault rupture and suffered damage commensurate with the type of feature, its orientation to the fault, and the amount, sense and width of surface rupture deformation.

Research papers, University of Canterbury Library

The extent of liquefaction in the eastern suburbs of Christchurch (Aranui, Bexley, Avonside, Avonhead and Dallington) from the February 22 2011 Earthquake resulted in extensive damage to in-ground waste water pipe systems. This caused a huge demand for portable toilets (or port-a-loos) and companies were importing them from outside Canterbury and in some instances from Australia. However, because they were deemed “assets of importance” under legislation, their allocation had to be coordinated by Civil Defence and Emergency Management (CDEM). Consequently, companies supplying them had to ignore requests from residents, businesses and rest homes; and commitments to large events outside of the city such as the Hamilton 400 V8 Supercars and the Pasifika Festival in Auckland were impacted. Frustrations started to show as neighbourhoods questioned the equity of the port-a-loos distribution. The Prime Minister was reported as reassuring citizens in the eastern suburbs in the first week of March that1 “a report about the distribution of port-a-loos and chemical toilets shows allocation has been fair. Key said he has asked Civil Defence about the distribution process and where the toilets been sent. He said there aren’t enough for the scale of the event but that is quickly being rectified and the need for toilets is being reassessed all the time.” Nonetheless, there still remained a deep sense of frustration and exclusion over the equity of the port-a-loos distribution. This study took the simple approach of mapping where those port-a-loos were on 11-12 March for several areas in the eastern suburbs and this suggested that their distribution was not equitable and was not well done. It reviews the predictive tools available for estimating damage to waste water pipes and asks the question could this situation have been better planned so that pot-a-loo locations could have been better prioritised? And finally it reviews the integral roles of communication and monitoring as part of disaster management strategy. The impression from this study is that other New Zealand urban centres could or would also be at risk and that work is need to developed more rational management approaches for disaster planning.