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Water & Wastewater Projects
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 Installation of new polyethylene sewer lines and 11 sulphur-resistant manholes at Albany Lakes, North Harbour, presented some challenges for PipeWorks.

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A history of periodic seepage dating back to the early 1930’s in the troublesome Arapuni Dam was finally resolved when Brian Perry Civil constructed four discrete cut-off walls in zones identified as containing the main fissure groups.

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This project involved widening and deepening 300m of an existing open drain to help reduce flooding caused by heavy rainfall and high tides within the coastal Gate Pa suburb of southern Tauranga.

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Brian Perry Civil performed essential structural reinforcing works to the Mangatawhiri Dam spillway channel, which had been at risk of major damage or collapse under an earthquake.

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Installation of sewer and stormwater lines around Orakei over the last century had resulted in connections between pipes, meaning wastewater was finding its way through outfalls into the Orakei Basin.

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The Fletcher Construction-McConnell Dowell joint venture that saw the unsightly 90-year-old sewer pipeline crossing Hobson Bay, in Auckland, replaced with a 3km long tunnel, has enabled the picturesque bay to be returned to its original marine environment.