DESIGN CONSIDERATIONS FOR DEEP RETAINED EXCAVATIONS IN OVER- CONSOLIDATED SEATTLE CLAYS

THE HARD CLAYS FOUND IN MANY PARTS OF THE SEATTLE AREA HAVE PRESENTED MAJOR PROBLEMS TO HIGHWAY ENGINEERS IN THE PAST 10 YEARS. DURING THIS PERIOD INTERSTATE FREEWAYS, STATE HIGHWAYS AND OTHER LOCAL CONSTRUCTION PROJECTS HAVE REQUIRED DEEP EXCAVATIONS AND STRUCTURES LOCATED WITHIN THE CLAY STRATA. IT WAS THE CONSTRUCTION OF INTERSTATE 5 THROUGH DOWNTOWN SEATTLE THAT CREATED THE MOST SERIOUS PROBLEMS AND RESULTED IN A UNIQUE RETAINING WALL SYSTEM. THE UNSTABLE SLOPES ON THIS PROJECT ALERTED DESIGN ENGINEERS TO THE POTENTIAL HAZARDS OF DEEP EXCAVATIONS IN THE HARD CLAYS. THIS PAPER DISCUSSES THE ORIGIN AND PHYSICAL CHARACTERISTICS OF THE CLAYS AND ILLUSTRATES HOW THESE CHARACTERISTICS ARE CONSIDERED IN THE DESIGN OF DEEP RETAINED EXCAVATIONS.

  • Supplemental Notes:
    • Proceedings, Workshop on Expansive Clays and Shales in Highway Design and Construction, Denver, Colorado, 1972. Available in 2 volumes from NTIS, PB-225842.
  • Corporate Authors:

    University of Wyoming, Laramie

    Wyoming Survey and Analysis Center, 710 Garfield
    Laramie, WY  USA  82070
  • Authors:
    • Strazer, R J
    • Wilson, S D
    • Bestwick, L K
  • Publication Date: 1973-5

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00236852
  • Record Type: Publication
  • Report/Paper Numbers: Workshop Proceedings
  • Files: TRIS
  • Created Date: Jul 31 1974 12:00AM