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This webinar will present the fourth panel in DFI's Software Discussion series for DFI's S3: Slopes, Slides and Stabilization conference.  This event will feature a live Software Discussion and Panel Webinar on Wednesday, August 5, 2020 from 11:00 AM - 2:00 PM Eastern (US) time.  This webinar series was developed to further industry understanding of the use of software for slope stabilization problems.  Providers of commonly used software packages will discuss, analyze and present solutions for the a real-world slope stabilization problem, discuss how the software was used to prepare various solutions, and provide tips on using packages to produce and validate solutions.  The presentation will be followed by a facilitated Q&A discussion. View the Full Conference Program Here.

Dr. Ben Turner, P.E., Dan Brown and Associates, PC will lead off the software discussion with his presentation, Incorporating Deep Foundations in Limit-Equilibrium Slope Stability Analyses: Revisiting Fundamentals and Seismic Applications.

Deep foundations are commonly used to prevent or stabilize existing landslides, deriving resistance to slope movement through embedment in bearing material below the slide plane.  A variety of design methods are used in practice to incorporate piles into limit-equilibrium method slope stability analysis, some of which fail to adequately capture the pile resistance mechanism or correctly identify the critical pile failure mode, leading to false interpretation of factors of safety.  Of particular concern is the common practice of assigning the shear strength of the pile material, e.g., the shear strength of concrete or steel multiplied by the cross sectional area of the pile, as a resisting force in slope stability analyses.  Without performing separate laterally-loaded pile analyses, this approach fails to identify whether shear failure is in fact the controlling pile mechanism; more often than not, analyses show that the pile would actually fail in flexure prior to shear.  As a result, the shear strength approach may drastically overestimate the pile contribution to stability, inflating the calculated factor of safety.

The following providers will analyze the problem using a variety of methods, present the solutions, and engage the audience in a detailed Q&A session.

  • Rocscience
  • Itasca
  • Bentley/Soilvision/Plaxis
  • GREGORY GEOTECHNICAL

Recordings of past software discussions in this webinar series are posted on DFI's YouTube channel.

S3 Lead Committee Chairs

Information About PDHs

Professional Development Hours

An increasing number of professional engineering licensing organizations require members to pursue professional development on a formal basis. DFI is pleased to provide a general Certificate of Participation for all its technical programs. This certificate is accepted by most licensing boards and serves as documentation of your pursuit of continuing education credits. There are some states that may not accept the general DFI certificate. Attendees are responsible for determining whether or not DFI PDHs are accepted by their respective licensing boards. The number of general PDHs for this conference is 3.

NEW! For New York State Licensed Engineers:

The New York State Educational Department now certifies the PDHs earned by attendees at DFI’s conferences, seminars and workshops.