This interim report presents the additional field data observed from November 1974, through June, 1977 at the reinforced earth wall on Route 39 in Los Angeles County. The field instrumentation was installed between August and October, 1972 for a previous research project. The additional data collected since November, 1974 indicated that the south wing of the reinforced earth wall has moved continuously outward. The strains in some of the steel strips have also increased continuously and now exceed the proportional limit. It is believed that this excessive straining is related to the following factors: additional load from the continous deposit of slide debris on top of and behind the wall, additional seepage pressure behind the wall because the subsurface drainage system may have been disrupted due to large vertical and horizontal movements of the foundation slide debris and percolation of surface runoff from behind the wall directly through the fill rather than the cross drain, and portions of the toe berm for the south wing of the reinforced earth wall and the embankment slope below the wall have been eroded by several winter storms. /FHWA/

  • Supplemental Notes:
    • This study was conducted in cooperation wiht the Department of Transportation Federal Highway Administration. Research project: Continue Monitoring the Field Instrumentation in the Reinforced Earth Fill on Route 39 (Type B Study).
  • Corporate Authors:

    California Department of Transportation

    Transportation Laboratory
    5900 Folsom Boulevard
    Sacramento, CA  United States  95819
  • Authors:
    • Chang, J C
  • Publication Date: 1978-2

Media Info

  • Pagination: 75 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00185288
  • Record Type: Publication
  • Source Agency: Federal Highway Administration
  • Report/Paper Numbers: FHWA-CA-TL-78-05 Intrm Rpt., FCP 40S8-812
  • Contract Numbers: D-4-143
  • Created Date: Mar 14 1979 12:00AM