Case Study

American Ductile Iron Pipe Weathers Magnitude 7.1 Earthquake Almost 30 Years After Installation In Alaska

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The dam at Campbell Lake was constructed in 1959. On the 125-acre lake are numerous homes with docks stretching into the water, many with float planes tied to them.

The year was 1989. The place was Anchorage, Alaska. The project was the installation of a gravity sewer line beneath Campbell Lake while it was drained for dam repairs. While this type of project and installation is unique in itself, the pipeline’s performance during a magnitude 7.1 earthquake more than 30 years after it was installed is equally remarkable.

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AMERICAN - American Cast Iron Pipe Company