Abstract
Prestressed Concrete Cylinder Pipe (PCCP) is a rigid, pressure pipe, designed to take advantage of the compressive strength and corrosion-inhibiting properties of portland cement concrete and the tensile strength of steel. Principally used for the transmission and distribution of water in municipal systems, it was widely accepted and installed throughout the U.S. beginning in 1942. Numerous catastrophic failures across the nation have halted the use of PCCP by numerous water agencies throughout the U.S. Due to the large diameters and critical nature of these pipelines, the San Diego County Water Authority embarked on a 20-year plan to reline or replace nearly 112 km (70 mi) of large diameter PCCP. This paper describes the methods of manufacturing and installing the steel liner plates to reline existing PCCP. The project consists of relining sections of a 2438 mm (96 in.) and a 1753 mm (69 in.) pipeline. This paper describes the unique methods of collapsing the steel cans and the rapid installation requirements required by the owner. Cooperation between the agency, manufacturer, and contractor was essential for the completion of this project on slopes as great as 38%. The design and installation of this liner system allowed for a minimum reduction in hydraulic capacity.
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Published on 01/01/2004
Volume 2004, 2004
DOI: 10.1061/40745(146)64
Licence: CC BY-NC-SA license
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