Seattle Public Utilities (SPU) has completed two projects using lining as a method for rehabilitating old pipelines. Less roadway restoration is a primary benefit. However, to make it work, there are other things that need to be considered: the installation of temporary watermains, traffic impacts, noise, and scheduling. All are a factor in overall project success. SPU will share their unforeseen challenges and lessons learned.
Learning Objectives:
1. Evaluate whether watermain relining is appropriate for different specific applications.
2. Include the considerations discussed in this presentation into the design and construction contract documents.
3. Prepare operations and maintenance staff on the implications for new taps and repairs of a lined watermain.
Contributor/Source
Aziz Alfi P.E. , PMP;Charles Oppelt P.E.;Shaunie Vail P.E., CCM, WDM4
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