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Images, UC QuakeStudies

Liquefaction piled on the sides of a road in north-east Christchurch. The liquefaction has been dug out of the properties and piled on the side of the road to be collected by road maintenance contractors.

Images, UC QuakeStudies

A collapsed section of road in north-east Christchurch. In the background, residents have piled liquefaction from their properties on the side of the road where it will be collected by road maintenance contractors.

Images, UC QuakeStudies

A collapsed section of road in north-east Christchurch. In the background, residents have piled liquefaction from their properties on the side of the road where it will be collected by road maintenance contractors.

Articles, Christchurch uncovered

Last week on the blog we introduced you to the 1881 South Belt sewer beneath Moorhouse Avenue: how it was built, how it got blocked, and how recently as part of SCIRT’s horizontal infrastructure rebuild program, their Downer delivery team and sub-contractors Donaldson Civil … Continue...

Images, UC QuakeStudies

A photograph of contractor Tony Fisher of Fisher Agricultural Ltd. inspecting a dug-out soil pit on a farm near River Road in Lincoln. There is a thick layer of saturated sand between the topsoil and the subsoil where the grass roots end.

Research papers, University of Canterbury Library

Principal contractors can achieve better financial performance in civil construction projects by increasing the proportion of works delivered by subcontractors. However, anecdotally the use of subcontractors is thought to be make principal contractors less competitive due to compounding profit margins. This study found that projects with a higher proportion of subcontracted work exhibit better financial results than projects with less work delivered by subcontractors. This study uses the Christchurch Infrastructure Alliance (known as the Stronger Christchurch Infrastructure Rebuild Team, SCIRT) as a case study to observe why principal contracting firms engage subcontractors and the effect subcontracting has on the overall performance of a construction project. Five top tier civil contracting firms (known as ‘delivery teams’) participated in the alliance. Each team was responsible for the delivery of individual projects. A sample of 334 individual SCIRT projects were analysed, and key delivery team staff were surveyed, to investigate the effect subcontractor engagement has on performance. Between the five delivery teams there were clear differences in how much work was delivered via subcontracts. The extent of this subcontractor engagement had a significant effect on the relative performance of the principal contractor. A positive correlation between subcontractor engagement and overall financial performance is observed, and a negative correlation is observed between subcontractor engagement and non-financial performance. Although the causes of these relationships appear complex, the primary reason appears to be that subcontracting fosters increased productivity by cascading financial performance incentives closer to the physical construction task. To maximise competitiveness and financial performance, principal contractors must embrace the use of subcontractors and develop efficient systems of managing subcontracted work.

Images, UC QuakeStudies

A CERA information sign on the fence in the Cathedral Square, placed to provide information to the public about the buildings seen from Cathedral Square. This one says "Clarendon Tower: This will be demolished. Currently CERA is working towards the appointment of an accredited demolistion contractor".

Images, UC QuakeStudies

Christchurch Mayor Bob Parker handling a jackhammer on Kingsford Street in Burwood. This was part of the opening of the Stronger Christchurch Infrastructure Rebuild Team (SCIRT). Earthquake Recovery Minister Jerry Brownlee and a contractor are looking on.

Images, UC QuakeStudies

Christchurch Mayor Bob Parker handling a jackhammer on Kingsford Street in Burwood. This was part of the opening of the Stronger Christchurch Infrastructure Rebuild Team (SCIRT). Earthquake Recovery Minister Jerry Brownlee and a contractor are looking on.

Images, UC QuakeStudies

Christchurch Mayor Bob Parker handling a jackhammer on Kingsford Street in Burwood. This was part of the opening of the Stronger Christchurch Infrastructure Rebuild Team (SCIRT). Earthquake Recovery Minister Jerry Brownlee and a contractor are looking on.

Images, UC QuakeStudies

Christchurch Mayor Bob Parker handling a jackhammer on Kingsford Street in Burwood. This was part of the opening of the Stronger Christchurch Infrastructure Rebuild Team (SCIRT). Earthquake Recovery Minister Jerry Brownlee and a contractor are looking on.

Images, UC QuakeStudies

Christchurch Mayor Bob Parker handling a jackhammer on Kingsford Street in Burwood. This was part of the opening of the Stronger Christchurch Infrastructure Rebuild Team (SCIRT). Earthquake Recovery Minister Jerry Brownlee and a contractor are looking on.

Images, UC QuakeStudies

Christchurch Mayor Bob Parker handling a jackhammer on Kingsford Street in Burwood. This was part of the opening of the Stronger Christchurch Infrastructure Rebuild Team (SCIRT). Earthquake Recovery Minister Jerry Brownlee and a contractor are looking on.

Images, UC QuakeStudies

A camera man filming Christchurch Mayor Bob Parker and Earthquake Recovery Minister Gerry Brownlee handling a jackhammer on Kingsford Street in Burwood. This was part of the opening of the Stronger Christchurch Infrastructure Rebuild Team (SCIRT). A contractor is standing to the left.

Videos, UC QuakeStudies

A video of a dug-out soil pit on a farm near River Road in Lincoln. There is a thick layer of saturated sand between the topsoil and the subsoil where the grass roots end. The saturated soil is collapsing as a result of contractor Tony Fisher, of Fisher Agriculture Ltd, jumping lightly up and down on the edge of the pit.

Images, UC QuakeStudies

An earthquake-damaged road in north-east Christchurch. The manhole in the centre of the road has risen and a road cone has been placed in the centre to warn road users. Residents have piled liquefaction from their properties on the side of the road where it will be collection by road maintenance contractors.

Images, UC QuakeStudies

Photograph captioned by Fairfax, "Work to restore and earthquake-strengthen the badly damaged historic St Paul's Trinity Pacific Presbyterian Church on Cashel Street has begun after resource consents were granted by the Christchurch City Council, and a preferred contractor was selected recently. Site manager Mike McKee inspects the domes to be restored".

Videos, UC QuakeStudies

A video of a dug-out soil pit on a farm near River Road in Lincoln. There is a thick layer of saturated sand between the topsoil and the subsoil where the grass roots end. The saturated soil is collapsing as a result of contractor Tony Fisher, of Fisher Agriculture Ltd, having jumped lightly up and down on the edge of the pit.

Videos, UC QuakeStudies

A video of contractor Tony Fisher, of Fisher Agricultural Ltd, jumping lightly up and down on the edge of a dug-out soil pit on a farm near River Road in Lincoln. There is a thick layer of saturated sand between the topsoil and the subsoil where the grass roots end. The saturated soil starts to collapse as a result of the movement.

Images, Canterbury Museum

One landscape colour digital photograph taken on 28 April 2012 looking south from Cunningham Terrace, Lyttelton. The photograph shows a homemade figure of Humpty Dumpty with a bandaged head sitting on a fence on top of a retaining wall awaiting repair. Contractor involved in repair work The retaining walls above and below Cunningham Terrace wer...

Images, UC QuakeStudies

Photograph captioned by Fairfax, "Work to restore and earthquake-strengthen the badly damaged historic St Paul's Trinity Pacific Presbyterian Church on Cashel Street has begun after resource consents were granted by the Christchurch City Council, and a preferred contractor was selected recently. Leading hand, Iain Piper (left) and site manager Mike McKee at work on the upstairs seating area".

Images, UC QuakeStudies

Photograph captioned by Fairfax, "Work to restore and earthquake-strengthen the badly damaged historic St Paul's Trinity Pacific Presbyterian Church on Cashel Street has begun after resource consents were granted by the Christchurch City Council, and a preferred contractor was selected recently. Leading hand, Iain Piper (left) and site manager Mike McKee at work on the upstairs seating area".