Client: Tainui Group Holdings (TGH)

Location: Ruakura, Hamilton

Date: September - December 2024 

 

CONTEXT

The Hamilton Transport Centre reconfiguration focused on improving infrastructure, accessibility and public amenities at one of the city’s busiest transport hubs.

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SUMMARY OF WORKS

This project involved a range of civil works including clearing, earthworks, landscaping, stormwater management, wastewater infrastructure, kerb construction, water services, utility ducting, and pavement construction. 

 

SITE CLEARING AND LANDSCAPING

Clearing and landscaping activities involved reshaping and topsoiling swales and grass verges, with 1,400 square metres of swale trimmed and shaped, 400 cubic metres of topsoil spread within treatment swales, 650 square metres of the eastern swale reworked, and 70 cubic metres of topsoil applied to grass verges.

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STORMWATER

Stormwater management works included the installation of a single catchpit, a first flush diverter, 15 meters each of 225mm and 300mm SN16 PVC culverts, and 180 square metres of riprap with geotextile fabric for erosion control. Additionally, 1,400 meters of subsoil drainage incorporating 20/40 drainage metal and filter cloth were installed, along with two treatment swale cutdowns.

 

WASTEWATER

The wastewater scope included the design and construction of an approved wastewater pump station with a rising main, along with the installation of a 1050mm diameter receiving manhole.

 

WATER SERVICES

For water services, 93 meters of 63mm PE100 PN12.5 pipeline, complete with valves, bends, thrust blocks, and a connection to the existing main with a backflow prevention check meter, were provided.

 

REMEDIAL WORK

During the provision of water services and pavement construction, soft spots within the existing subgrade were identified. Consequently, it was necessary to excavate 165 cubic metres of material for disposal, followed by backfilling with Brown Rock. Additionally, 2,300 cubic metres of GAP 65 was imported, placed, and compacted due to the existing subgrade being lower than initially anticipated. 

 

UTILITY SERVICES

Utility services included the excavation and reinstatement of a 238 meter common services trench, along with the provision of 448 meters and 224 meters of 150mm and 50mm power ducting. 

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PAVEMENT WORKS

Pavement works included the construction of a 33,000 square metre container yard pavement with a TNZ40 subbase (4,950 cubic metres), trimmed and compacted and surfaced with a 50mm AC10 layer over a membrane seal. This required managing the delivery and placement of between 1,600 and 2,000 tons of aggregate per day to meet the project’s tight construction timelines.

 

CONCRETE AND KERB

Kerb construction involved the installation of 150 meters of RITS vertical kerb and channel.An office container washing bay was constructed with 75 square metres of 175mm 20MPa concrete, 62 meters of edge restraint, and a 10 cubic metre AC10 wedge layer.

 

FINISHING WORK

The project concluded with the installation of 525 meters of 1.8-meter high security fencing and a security gate.

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RELEVANCE

This project demonstrates our ability to build multi-discipline civil infrastructure, particularly large-scale roading pavements.