Retaining Wall Design and Slope Stabilization Techniques
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Please log into the webinar 15 – 30 minutes before start time.
Monday, December 13, 2021
8:30 am – 4:15 pm CST (incl. a 60-min break)
James “Jay” A. McKelvey, III, P.E.,D.GE, F.ASCE
Types of Retaining Walls, Soil Mechanics Review, Earth Pressures on Walls
Types of retaining walls
• Cut walls
• Fill walls
Soil mechanics review
• Soil classification
• Physical properties
• Shear strength
• Deformation properties
• Lateral earth pressures
Earth pressures on walls
• Soil and hydrostatic pressures
• Surcharge loads
• Influence of slopes
Modes of Failure, Retaining Wall Theory and Design, Geosynthetic Design
Modes of failure
• External failure modes
• Internal failure modes
• Serviceability failure
Retaining wall theory and design
• Bearing capacity
• MSE walls and slopes
• Geosynthetic materials
• Allowable strength
• Anchorage capacity
• Geosynthetics in walls and slopes deformation
Retaining wall and slope software
Slope Stability and Slope Stabilization
• Circular failures
• Wedge failures
• Types of failures
• Drainage relief
• Geosynthetic reinforcement
• Soil nails and rock anchors
Stabilization of failed slope
MSE stabilization with soil nails
MSE stabilization with buttress wall
Slope stabilization with piles
Shotcrete walls with tiebacks
Slope stabilization with shotcrete and soil nails
Geosynthetic reinforced slope
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Certificates of completion can be downloaded in PDF form upon passing a short quiz. A link to the quiz will be sent to each qualifying attendee immediately after the webinar. The certificate can be downloaded from the Results page of the quiz upon scoring 80% or higher.
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6.0 HSW CE Hours
AIA: (AIA credits only available for attending live Webinar)
6.0 HSW CE Hours
LA CES: (LA CES credits only available for attending live Webinar)
6.0 HSW PDHs
6.0 ASFPM CECs
International Code Council:
.6 CEUs (Sitework)
Continuing Education Credit Information
Retaining Wall Design and Slope Stabilization Techniques
This webinar offers 6.0 PDHs to professional engineers and 6.0 HSW continuing education hours to architects licensed in all states.
HalfMoon Education is an approved continuing education sponsor for engineers in Florida (Provider No. 0004647), Indiana (License No. CE21700059), Maryland, New Jersey (Approval No. 24GP00000700) and North Carolina (S-0130). HalfMoon Education is deemed an approved continuing education sponsor for New York engineers and architects via its registration with the American Institute of Architects Continuing Education System (Regulations of the Commissioner §68.14(i)(2) and §69.6(i)(2)). Other states do not preapprove continuing education providers or courses.
The American Institute of Architects Continuing Education System has approved this course for 6.0 LU|HSW (Sponsor No. J885). Only full participation is reportable to the AIA/CES.
The Landscape Architecture Continuing Education System has approved this course for 6.0 HSW PDHs. Only full participation is reportable to the LA CES.
This webinar has been approved by the Association of State Floodplain Managers for 6.0 CECs for floodplain managers.
The International Code Council has approved this event for .6 CEUs in the specialty area of Sitework (Preferred Provider No. 1232).
Completion certificates will be awarded to participants who complete this event, respond to prompts and earn a passing score (80%) on the quiz that follows the presentation (multiple attempts allowed).
James “Jay” A. McKelvey III P.E. D.GE F.ASCE
Director- Geotechnical Design Division at Earth Engineering Inc.
Mr. McKelvey is the director of the Geotechnical Design Division at Earth Engineering Inc. in East Norriton, Pennsylvania. He is a registered professional engineer (P.E.) in California, Delaware, Maryland, New Jersey, Pennsylvania, Virginia and the District of Columbia. Mr. McKelvey is also a Diplomate (D.GE) of the Academy of Geo-Professionals and a Fellow of the American Society of Civil Engineers (F.ASCE).
Mr. McKelvey has extensive experience in geotechnical engineering including site assessment and field investigations; deep and shallow foundation design for buildings, bridges and other structures; retaining wall design; embankment stability; mechanically stabilized soil structures; and subsurface hydrology.
He also has significant experience in mitigating heavy construction claims and litigation support pertaining to impacted heavy construction projects. Mr. McKelvey has also handled construction support and construction quality assurance projects. His environmental engineering experience includes technical contributions to the remediation of many Superfund sites and over 50 landfill design projects.
Mr. McKelvey has published over 30 technical papers in journals, conference proceedings and trade magazines. He is the past chair for the Delaware Valley Geo-Institute (DVGI) and is a voting member in ASTM committees Soil and Rock (D18), and Geosynthetics (D35) and is an editorial board member of the Geotechnical Testing Journal. Mr. McKelvey also serves on two Geo-Institute committees, Earth Structures and Embankments and Dams, the latter of which he is a member of the subcommittee on landslide risk assessment.
AIA Provider Statement:
HalfMoon Education Inc. is a registered provider of AIA-approved continuing education under Provider Number J885. All registered AIA/CES Providers must comply with the AIA Standards for Continuing Education Programs. Any questions or concerns about this provider of learning program may be sent to AIA/CES (email@example.com or (800) AIA 3837, Option 3).
This learning program is registered with AIA/CES for continuing professional education. As such, it does not include content that may be deemed or construed to be an approval or endorsement by the AIA of any material of construction or any method or manner of handling, using, distributing, or dealing in any material or product.
AIA continuing education credit has been reviewed and approved by AIA/CES. Learners must complete the entire learning program to receive continuing education credit. AIA continuing education Learning Units earned upon completion of this course will be reported to AIA/CES for AIA members. Certificates of Completion for both AIA members and non-AIA members are available upon request.
Course Title: Retaining Wall Design and Slope Stabilization Techniques
Delivery Method: Live Online
Course Description: This course on retaining wall design and slope stabilization techniques covers the types of retaining walls, a review of soil mechanics, modes of failure, retaining wall theory and design, geosynthetic design, slope stability and stabilization, and case histories of stabilized slopes.
Learning Objective 1:
Learners will be able to identify the types of retaining walls and describe the various forms of earth pressures on walls.
Learning Objective 2:
Learners will be able to describe three modes of failure and explain retaining wall and geosynthetic design.
Learning Objective 3:
Learners will be able to identify and describe slope stabilization techniques, including drainage, geosynthetic reinforcement, soil nails and rock anchors.
Learning Objective 4:
Learners will be able to discuss and reference case histories of slope stabilization, MSE failures and stabilization with soil nails, buttressed walls, piles and tiebacks, and geosynthetics.
LUs: 6.5 LU Type: LU|HSWs.
Prerequisites: Experience with earthwork and site analysis
Advance Preparation: None
Program Level: Intermediate
Course Expiration Date: 09/24/2024
Complaint Resolution Policy:
Complaints regarding this course can be emailed to firstname.lastname@example.org or by calling (715) 835-5900. A HalfMoon Education representative will respond within 72 hours to resolve the complaint, which will include, but not limited to, access to another CE activity at no or reduced cost or a full or partial refund. Each instance will be resolved on a case-by-case situation.