Condition assessment
The tools used to assess the condition of underground infrastructure, such as underground water or sewer networks include destructive and non-destructive methods, such as acoustic leak detection, closed circuit television (CCTV) for visual inspection, and electromagnetic inspection for wall thickness measurement.
We qualify which method is the best fit for a specific project by reviewing the data collected from the condition assessment and recommend a plan of action that maximizes rehabilitation of the pipeline in question, taking into consideration timelines, budget, and our findings.
Feasibility and conceptual studies
WSP conducts feasibility studies, as well as design and specifications for various trenchless technologies, including:
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Microtunelling
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Horizontal directional drilling (HDD)
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Pipe ramming
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Cured-in- place-pipe (CIPP) lining
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Slip-lining
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Swage-lining
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Carbon fibre reinforced polymer
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Pipe bursting
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Spray-on liners
This has led to several new technologies for new pipes to be installed, or for existing pipes to be rehabilitated using trenchless technologies.
Micro-tunnelling
Micro-Tunnelling is a trenchless solution for constructing small diameter tunnels that is used especially for projects that require the tunnel to cross under dense traffic roads, railways, or rivers. This method minimizes disruptions on the surface during the tunnel construction in comparison with traditional open trench method, and there is no requirement for personnel to be inside the tunnel during construction operations.
Micro-tunnelling can be utilized in a variety of soft-ground or hard-rock ground conditions and the cutterhead is designed for the specific geology anticipated at the site. This technique installs typically concrete, steel or FRP jacking pipes using a pushing or jacking frame within the launch shaft.
WSP has expertise to cover all areas and ground conditions where micro-tunnelling is employed.