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City of Los Angeles Pushing the Limits of CIPP Rehabilitation/Rehabilitating 1980 mm (78-Inch) Triple Siphon Barrels

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The City of Los Angeles (City) maintains the largest wastewater collection system in the United States. Many of the wastewater collection system pipes are old and in need of repair. In 2007 the City awarded a construction contract which included rehabilitating three (3) 1980 mm (78-inch) diameter 548 m (1,800-feet) long inverted Centinela Siphon Barrels using Cured-In-Place Pipe (CIPP) method. CIPP method involves installation of a flexible tube liner that has been impregnated with thermosetting resin into an existing pipe and then curing the resin to create a hardened corrosion resistant layer protecting the existing host pipe. Installing the CIPP into the siphon barrels presented many construction challenges due to the large size and long length of the barrels. However, the contractor and the Construction Management (CM) team were able to successfully navigate these challenges and complete the largest CIPP project in the history of the City of Los Angeles.
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Keywords: Cured-in-Place Pipe (CIPP); Liner; Pipe Rehabilitation; Siphon Barrel; Thermosetting Resin; Tube

Document Type: Research Article

Publication date: 2009-01-01

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