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2016 SUSTAINABILITY AWARDS

EXCELLENCE IN CONCRETE FOR THE COMMUNITY
HEB CONSTRUCTION
The Vector Wero Whitewater Park, Auckland

28 Nov 2016

The Vector Wero Whitewater Park in Auckland is New Zealand’s first purpose built artificial whitewater facility. HEB construction was engaged by the Second Nature Charitable Trust to deliver this world-class facility for the benefit of the local community.

The main components of the system include a large pond which feeds two courses via a large pump station. The pump station houses seven pumps, and is capable of delivering simultaneous water flows of 16cu m/sec to the grade 4 course and waterfall, and 10.5cu m/sec to the grade 2 course.

The concrete-lined pond provides storage for up to 22 million litres of water, fed from an on-site bore and harvested rainwater. This approach is coherent with the project’s philosophy of sustainability and appropriate use of natural resources. The water is treated from an onsite treatment plant using filtration and UV disinfection.

The facility is unique with two water courses. The short course will be used by the community and schools for recreation, while the long course will support high-level canoe/kayak slalom training, commercial rafting and world-class canoe and kayaking events.

The facility will attract national and international visitors to the area for the benefit of local businesses. Innovation was at the forefront of all design decisions and construction methodologies. Poor ground conditions posed significant construction challenges — one example being the construction of the complex pump station structure, combined with the risk of ground settlement.

The courses themselves are constructed from cement-treated clay, and lined with shotcrete. Grades, drops, groynes and obstacles are used to generate the rapids in the channels. Each rapid can be tuned to provide optimum rapids by moving the relocatable obstacles on the channel floor.

In total, 7700cu m of concrete was used by way of Allied Concrete, Conset and Pioneer Concrete Pumps. The concrete works were completed to a very high standard to meet the required surface finish and geometry requirements, with the end result being a stunning facility for the local community to enjoy.

JUDGES' CITATION

This outstanding world-class community facility simply couldn’t have been constructed without concrete. Concrete’s strength and durability are clearly evident in the water retaining elements of the park, which have to manage massive volumes moving at considerable speed. At the same time, concrete’s flexibility can be seen in the complex variations of each course that are designed to pose ongoing whitewater challenges to the seasoned pro and weekend novice. As with many structures and facilities built on the properties of concrete, those who enjoy this complex will no doubt remain blissfully unaware of the important role played by the main construction material.

SUBMITTED BY HEB Construction Ltd

CLIENT The Second Nature Charitable Trust

CONSULTANTS Whitewater Parks International, Creative Spaces, Jacobs, Gaia

CONTRACTOR HEB Construction Ltd