Abstract
An introduction to techniques that have been pioneered in Northern America, that are new to not only New Zealand but pretty much the rest of the world. The main focus is on watermain pressure pipeline relining / rehabilitation and gives and explanation of the system, its benefits, development, how it is designed and installed. New Zealand and International case studies and learnings are also reviewed. Pipeline sleeve repair systems for both pressure and non-pressure applications are also discussed. These systems provide a full structural repair in all pipe materials and can be installed in live drains, even with severe infiltration. They can work in conjunction with CIPP lining providing a more robust solution. The diameter range that can be repaired is from 100mm to 3150mm including box and irregular shaped pipes & culverts.
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