CDS Installed 3.5km of 400mm to 630mm pipeline installed at flat grades (down to 0.13%) through varying ground conditions including rock. An unusually large number of unmarked service conflicts with proposed alignments were successfully mitigated by the engineering capabilities of the project team.
This project involved installing 300m of 450mm PE pipe through an existing 300mm reinforced concrete pipe using pipe bursting technologies.
CDS were contracted to install a single length 115m of 350mmØ gravity sewer to a grade of 0.3%. A technician from Highside Drilling Services® used a Paratrack location guidance system to achieve the required tight grade at depths reaching 25 m. Due to the entry location for this drill shot, CDS were required construct a…
For this project CDS installed approximately 3,000m of 800mm OD PE pipe in liquefied sands in Christchurch. The installations include drill shots ranging from 110m to 625m in length under open fields, roundabouts and main roads. This also included a 250m drill shot under the environmentally sensitive Avon River. CDS was able to successfully manage…
CDS installed 680m of 315mm PE pipe via slip lining inside and existing 350mm PVC pipe. This pipe was installed using our DitchWitch® JT4020 drill, in 2 separate drill shots.
This project involved installing 850m of wastewater rising main and a pump station. This included a 440m drill shot under the Mangawhai estuary. The drill shot was located at low tide using a Digitrack® F5 walkover locator to depths in excess of 6m. The DitchWitch® JT8020 drill was used for this drill shot accompanied by…
CDS was contracted to install 400m of 400mm Ø and 450mm Ø PE pipework by pipebursting the existing 300mm diameter stormwater pipe running under Franklin Road in downtown Auckland. The project was completed in 3 separate drill shots with a largest single drill shot of 180m. CDS completed these drill shots using its DitchWitch® JT8020…
This Watercare contract involved the upgrading of the wastewater network in 9 separate areas in the Howick and Pakuranga area in Auckland. The contract ran for two years and on completion in January 2017, CDS New Zealand Ltd finished ahead of programme and $1m under the contract value. Each of the 9 sites had their…
CDS successfully completed a stormwater outlet drill shot, installation of 200m of 630mm OD PE pipe down the middle of a busy St Heliers Road in a single shot and a complex 6m deep manhole and outlet structure for Auckland Council. Ground conditions in this area proved very complex and through CDS’s use of drilling…