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VARIOUS PIPE JACKING PROJECTS

Client KiwiRail, Auckland Council, Watercare Services, Waitemata District Health Board
Project Value $500,000 - $3 Million

Description Pipe jacking projects include North Shore Hospital, Middlemore Hospital, Grafton Road, Hans Street, Godley Road, Subway Road, and Tram Valley Road. Pipe sizes ranged from 1050 - 1500mm diameter and drive lengths ranged from 50 - 200m.

Relevant features
 
Work undertaken included:
  
• Four of the above projects involved jacking under live railway lines with minimal settlement occurring.
• Variable ground conditions including fill with concrete obstructions, silts and sands, sandstone and basalt.
• Drill and blast technique used in basalt.
• Pipe grades ranged from 0.2% - 1.5% and pipe jacking carried out in both upstream and downstream directions.
• Jacking shafts ranged from 4m - 8m deep and generally constructed using sheet piles.

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CENTRAL CONNECTOR DRAINAGE SEAWALL AND OUTFALL
Client: Auckland City Council
Project Value: $6 million

This drainage project was part of Auckland City’s $40 million transport corridor project...

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JACOBSON'S TUNNEL REFURBISHMENT
Client: Watercare Services Ltd
Project Value: $1.3 Million

Jacobson’s Tunnel is located in the Waitekere Ranges and was constructed in the 1960’s...

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CARTWRIGHT ROAD STORMWATER UPGRADE
Client: Auckland Council
Project Value: $2 Million

Mobilised plant and labour within two days... including 100 tonnes of sheet piles in a commercial zone.