FIBRE LINK INSTALLATION - HAAST TO HAWEA
Client: Ventia
Location: Haast to Hawea
Service: Optic Fibre Link Installation
Date started: September 2020
Date completed: November 2021
Challenges
The client chose Marais Laying NZ as its main contractor to install a new underground subduct along State Highway 6 to link the optic fibre between the West Coast and Central Otago.
The objectives where to finish the job in 18 months and to keep the footprint as low as possible while meeting NTZA’s expectations in terms of quality and safety.
Despite being a beautiful scenic drive for those passing by, the mountain range and the lakes between the two regions are a real challenge when it comes to any underground works and communication with the outside. In addition to this, the weather in this area is one of New Zealand's worst both in terms of rain-fall and freezing temperatures.
Solution
We selected different machines to address the different challenges coming our way. While the ST2 is ideal for trenching in the berm, we imported a TRS885 specially for this project to complete the section in the middle of the road.
Result
This project allowed the company to introduce a new range of solutions for the installation of underground services in difficult areas of the country while keeping the timeframe shorter and the footprint smaller than previous existing techniques.
Key facts:
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118km of trench
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3,000 premises connected to the fibre
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3 different trenchers
Key equipment used:
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Dynapac narrow compaction wheel
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24to Digger with pre-ripper and plough
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