DFI A-Wall Study

A-walls are a slope stabilization technique involving a series of deep foundation elements installed in a failing or marginally stable slope using an A-shaped pattern of alternating inclinations. A-walls have been used to successfully stabilize several noteworthy slopes, but analysis of the walls is complicated by several complex load-transfer mechanisms. These complications have dissuaded engineers from using the promising approach. The Deep Foundations Institute (DFI) has funded a study by the University of Missouri to improve analysis techniques for A-walls using computer code developed by the university. The MTC effort will be used to develop improved design practices for A-walls, which will be valuable for transportation agencies that face significant risks and costs associated with slope instability. The objective of this project is to develop improved design guidance for A-walls, which will be a valuable tool for departments of transportation (DOTs).


  • English


  • Status: Active
  • Contract Numbers:


  • Sponsor Organizations:

    Midwest Transportation Center

    Iowa State University
    2711 S Loop Drive, Suite 4700
    Ames, IA  United States  50010-8664

    Office of the Assistant Secretary for Research and Technology

    University Transportation Centers Program
    Department of Transportation
    Washington, DC  United States  20590

    University of Missouri, Columbia

    Department of Civil Engineering
    Columbia, MO  United States  65211

    Deep Foundations Institute

    326 Lafayette Avenue
    Hawthorne, New Jersey  United States  07506
  • Managing Organizations:

    Iowa State University, Ames

    Institute for Transportation
    2711 South Loop Drive, Suite 4700
    Ames, Iowa  United States  50010-8664
  • Performing Organizations:

    University of Missouri, Columbia

    Department of Civil Engineering
    Columbia, MO  United States  65211
  • Principal Investigators:

    Loehr, Erik

    Boeckmann, Andrew

  • Start Date: 20160401
  • Expected Completion Date: 20161231
  • Actual Completion Date: 0

Subject/Index Terms

Filing Info

  • Accession Number: 01618247
  • Record Type: Research project
  • Source Agency: Midwest Transportation Center
  • Contract Numbers: DTRT13-G-UTC37
  • Files: UTC, RiP
  • Created Date: Dec 1 2016 9:58AM