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If the Earth Moves, This Flexible Iron Pipe Moves Too

Earthquake-resistant ductile iron pipe sections vary in length from roughly 6.5 ft to nearly 13.3 ft. (Image courtesy of the Metropolitan Water District of Southern California)The American Society of Civil Engineers recently highlighted the technology being used for the Casa Loma Siphon Barrel No. 1, which is being retrofitted by the Metropolitan Water District of Southern California. The utility is performing a seismic retrofit of a 1,200-foot section of the 148-inch diameter Colorado River Aqueduct with welded steel pipe and dual 104-inch earthquake-resistant ductile iron pipelines at the Casa Loma fault crossing.

Carollo provided preliminary design and final design for the project, as well as engineering services during construction.

The upgraded pipelines are designed for 12.8 feet of fault displacement, were backfilled with a soft expanded polystyrene geofoam at the fault crossing and will be the largest installation of earthquake-resistant ductile iron pipe (ERDIP) in the United States.

Click this link to read the article from ASCE: