Workshop Trenchless Technology (Johannesburg, South Africa)

Pipe rehabilitation/improvement techniques can save communities millions of dollars. Historically, underground utility piping had to be installed by open cut excavation, or jack-and-bore operations. These techniques are disruptive to the environment, vehicular and pedestrian traffic. Construction zones or detour routes affect commerce and are costly from a fiscal, social and environmental perspective. While there is no zero-impact pipe installation method, more and more techniques are being developed to minimize disruption at affordable costs.

Cutting Edge Highlights:

• Installation of new pipes, e.g. horizontal directional drilling, micro-tunnelling, pipe ramming;
• Rehabilitation of existing pipes, e.g. pipe bursting, CIPP and other lining techniques, patch repairs, grouting and the rehabilitation of man-entry and pressure pipes.
• An overview of the various techniques available;
• Discuss the advantages and disadvantages of each technique, highlighting where the techniques are suitable and where they are not;
• Discuss the risks associated with each technique;
• Outline the investigation works that should be carried out before the commencement of construction works;
• Discuss the factors that should be considered in the design of projects involving trenchless technology;
• Review the issues that should be considered when selecting which trenchless technology technique to use and which contractor to engage;
• Discuss the items that should be considered when supervising the construction of trenchless technology works.

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