A large diameter wastewater interceptor line failed during a moderate earthquake. Two sections of the line rose from one to three feet above its original grade. An investigation showed that the primary cause was liquefaction of the granular backfill in locations where drainage was inhibited. The ground motions generated by the earthquake were moderate, however there is a possibility that there was amplification of the ground motion in the immediate failure area.

  • Supplemental Notes:
    • This article is an excerpt from the Proceedings of the Fourteenth Annual Engineering Geology and Soils Engineering Symposium that was sponsored by Idaho Transportation Department, Division of Highways; University of Idaho, Department of Geology and Department of Civil Engineering; Idaho State University, Department of Geology and Department of Engineering; and Boise State University, Department of Geology, and Department of Physical Science and Engineering. This symposium was held at the Rodeway Inn, Boise, Idaho, and was hosted by Boise State University.
  • Corporate Authors:

    Idaho Department of Highways

    P.O. Box 7129
    Boise, ID  United States  83707
  • Authors:
    • Miller, E A
    • McMaster, E R
    • Bell, J M
  • Publication Date: 1976-4-9

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00142678
  • Record Type: Publication
  • Created Date: Feb 1 1977 12:00AM