A new stormwater outfall to be constructed at Army Bay near Whangaparaoa north of Auckland will be a construction first for New Zealand.
McConnell Dowell will be installing the 2km onshore section of the 3km outfall pipe using Direct Pipe, a construction methodology never before used in the country.
Direct Pipe is relatively new trenchless technology which combines the advantages of micro-tunnelling and HDD to install prefabricated steel pipe strings 120m at a time. The pipeline is installed well below the ground surface, and poses a much lower environmental risk than other methodologies. (Watch a video of direct pipe here)
McConnell Dowell adds this latest project to our extensive track record in offshore pipe installation, including marine outfalls at Rosedale, Pegasus Bay, Clandeboye and Tahuna, marine works at Taharoa, and the successful use of Direct Pipe by McConnell Dowell on the 4th Parallel pipeline in Thailand.
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