Across the country, water distribution and wastewater collection systems are reaching the end of their asset life, and creative solutions are needed to restore capacities and rehabilitate the structures cost-effectively and efficiently. Several rehabilitation tools are available such as pipe bursting, spray-on liners, and liner inserts that can be used for system rehabilitation. As many of these existing utilities are in areas that have developed greatly since their original installation, the selection of rehabilitation techniques must consider factors including access, traffic volumes, potential service disruptions to customers, impacts on the community, and cost/benefit considerations. In many instances, the familiar dig-and-replace is no longer a viable option, leaving trenchless and near trench methods as the remaining viable options.
Contributor/Source
Robbie Bald, PE;Kenneth Orie;Damon Dequenne
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