Webinar instructions will be emailed before the date of the webinar.

Please log into the webinar 15 – 30 minutes before start time.

Log into Webinar
8:00 – 8:30 am CDT
Morning Session
8:30 – 11:45 am CDT
11:45 am – 12:15 pm CDT
Afternoon Session
12:15 – 3:30 pm CDT


Presented by
Antonios Vytiniotis Ph.D. P.E.
Seda Gokyer Erbis, Ph.D.

Slope Mechanics and Movements                                                                        A. Vytiniotis 
Types of slope movements
• Deep-seated
• Rockslides
• Mudflows
Slope stability considerations
• Soil and rock slopes
• Geologic conditions
• Topography
• Surface and groundwater conditions
• Natural and engineered slopes
Methods of slope stability analysis
• Strength selection for analysis
• Limit equilibrium methods
• Finite element analysis
• Limit analysis (upper and lower bound)
Slope instability case studies

Slope Stabilization                                                                                                S. Gokyer Erbis
General concepts of slope stabilization
Grading/modifying slope geometry
• Reducing reacting load
• Increasing resisting load
Soil strengthening
• Piles/soil nailing
• Chemical grouting
• Anchors
• Electro-osmosis
Retaining walls
• Gravity walls
• Sheet pile walls
• Anchored walls
Water mitigation
• Surface water drainage alteration
• Groundwater level reduction
Scour protection
Slope stabilization analysis
• Application of numerical analysis techniques


 Webinar Instructions

Each webinar session earns continuing education credit and can be registered for individually. All attendees must log-on through their own email – attendees may not watch together if they wish to earn continuing education credit. HalfMoon Education Inc. must be able to prove attendance if either the attendee or HalfMoon Education Inc. is audited.

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.

Webinars are presented via GoToWebinar, an easy-to-use application that can be run on most systems and tablets. Instructions and login information will be provided in an email sent close to the date of the webinar. It is highly recommended that you download, install and test the application before the webinar begins by clicking on the link in the email.

GoToWebinar App requirements:
Windows 7 – 10 or Mac OSX Mavericks (10.9) – macOS Catalina (10.15)

Web Browser:
The two most recent version of the following browsers:
Google Chrome, Mozilla Firefox, Apple Safari, Microsoft Edge
Internet Explorer v11 (or later) with Flash enabled

Internet connection: Minimum of 1Mbps       Hardware: 2GB RAM or more

For more information, visit the Support section at


Professional Engineers
6.0 PDHs

6.0 HSW CE Hours

Landscape Architects
6.0 HSW CE Hours

International Code Council
.6 CEUs (Sitework)

Floodplain Managers


Continuing Education Credit Information
This webinar is open to the public and offers 6.0 PDHs to professional engineers, 6.0 HSW continuing education hours to licensed architects, and 6.0 HSW continuing education hours to landscape architects in all states that allow this learning method. Please refer to specific state rules to determine eligibility.

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 and landscape architects via its registration with the American Institute of Architects Continuing Education System (Regulations of the Commissioner §68.14(i)(2), §69.6(i)(2) and §79-1.5(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|HSWs (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.

The International Code Council has approved this event for .6 CEUs in the specialty area of Sitework (Preferred Provider No. 1232).

This webinar has been approved by the Association of State Floodplain Managers for 6.0 CECs for floodplain managers.

Attendance will be monitored, and attendance certificates will be available after the webinar for those who attend the entire course and score a minimum 80% on the quiz that follows the course (multiple attempts allowed).


Seda Gokyer Erbis Ph.D.

Project Manager at Geocomp Consulting
Dr. Gokyer Erbis is a geotechnical engineer with 10 years of experience in research, development, and consulting in geotechnical earthquake engineering. She has been leading the technical efforts for one of Geocomp’s largest consulting projects on seismic assessment of coal ash impoundments. She has worked on various research and consulting projects that involved advanced field and laboratory testing for soil characterization. These projects include undrained behavior of coal combustion residuals, soil liquefaction and post-liquefaction behavior under different test conditions: cyclic triaxial, unidirectional and bidirectional direct simple shear, inducing partial saturation for liquefaction mitigation. She also has background in seismic instrumentation and numerical modeling. She has experience in using software tools to assess slope stability (GeoStudio), to conduct site response analysis (ProShake, DeepSoil), to analyze soil structure interaction (PYWall, Group), to model flow and transport in saturated/unsaturated porous media (SUTRA). She has authored and co-authored several publications in peer reviewed ASCE and ASTM journals and conference proceedings.

Antonios Vytiniotis, Ph.D. P.E.

Director – Group Lead, Massachusetts Consulting, Geocomp

 Antonios Vytiniotis is a member of the Geo-Institute’s Deep Foundation and Computation Geotechnics committees and a regional Director for the Society of Construction Law – North America.  He has background in structural and geotechnical engineering, geotechnical earthquake engineering, and numerical analysis. He has worked on numerous projects in more than 20 states and multiple countries, assisting project owners, law firms, insurance companies and developers. His analyses consist of assessing soil improvement, soil-structure interaction, dam safety, causation of MSE wall failures, effects of adjacent construction (such as vibrations or pile driving), soil heave or settlements, pipeline installation, water intrusion, and backfill quality. He is experienced in evaluating slope stability, performing mechanical and flow-through-porous media finite element analyses and soil-structure interaction using various software such as Plaxis, Flac, Geostudio, ABAQUS, LPILE, FEFLOW and GROUP. Additionally, Dr. Vytiniotis has experience in data analysis, signal processing and GIS.  Dr. Vytiniotis has performed research on the seismic response of pile-supported wharves, seismic slope stability, the effectiveness of prefabricated vertical drains (earthquake drains) and soil densification in reducing liquefaction risk, the effect of gravel drains in amplifying seismic accelerations, and numerical simulations of centrifuge experiments. In the past, Dr. Vytiniotis gained international experience in Greece and Switzerland, and was appointed lecturer at MIT.

AIA Info

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 ( 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: Slope Stabilization and Landslide Prevention

Delivery Method: Live Online

Course Description: This course examines methods to stabilize slopes to prevent failures, erosion and landslides.

Learning Objectives:

Learning Objective 1:
Learners will be able to identify types of slope movements, included deep-seated, rockslides, and mud flows.

Learning Objective 2:
Learners will be able to identify the types of slope stability conditions, including geologic conditions, topography, surface and groundwater conditions, and natural and engineered slopes.

Learning Objective 3:
Learners will be able identify and describe methods of slope stability analysis.

Learning Objective 4:
Learner will be able to identify and describe slope stabilization, including grading/modifying geometry, soil strengthening, retaining walls, water mitigation, and scour protection.

LUs: 6.0                                                                                              LU Type: LU|HSWs.

Prerequisites: Experience with site evaluations and development

Advance Preparation: None

Program Level: Intermediate

Course Expiration Date: 01/21/2024

Complaint Resolution Policy:

Complaints regarding this course can be emailed to 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.