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

Day One: Monday, November 30, 2020
9:00 am – 1:30 pm PST (including a 30-min. break)

Day Two: Tuesday, December 1, 2020
9:00 am – 1:00 pm PST (including a 30-min. break)

(please log into the webinar 15 – 30 minutes before start time)

Presented by Curren E Mohney

Slope Stabilization and Landslide Prevention Day One
Monday, November 30, 2020 | 9:00 am – 1:30 pm PST (including a 30-min. break)

Slope Movement and Mechanisms

Types of slope movement and instability
• Rockfall and rockslides
• Translational and rotational failures
• Debris flows and rapidly moving landslides
Analyzing the stability of slopes
Slope stability concepts
• Reviewing geologic conditions
• Examining soils and topography
• Evaluating surface and groundwater conditions
A brief discussion of soil and rock mechanics
• The influence of water
Evaluating types of slopes
• Natural slopes
• Engineered slopes
Methods of slope stability analysis

Slope Stabilization Methods

Use of vegetation (bioengineering)
Surface protection
Unloading Buttressing
• Buttressing for streambank stabilization and environmental considerations
Installing earth retention structures
Rock slope stabilization

Slope Stabilization and Landslide Prevention Day Two 
Tuesday, December 1, 2020 | 9:00 am – 1:00 pm PST (including a 30-min. break)

Slope Stabilization Methods (continued)

Combining methods

Landslide Hazard and Risk Assessment

Definitions and elements of landslide hazard risk
Risk-reduction strategies (objectives for landslide mitigation)
Lifecycle cost analysis

Case Histories in Landslide Mitigation

Slope stabilization using retaining walls
Slope stabilization using combinations of methods
Rockfall mitigation
Slope stabilization using earthworks
• Shear keys and buttresses
• Unloading
Slope stabilization using drainage

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 will be provided for each webinar attended and will be sent via email in PDF form about five business days after the conclusion of the series.

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
7.5 PDHs

7.5 HSW CE Hours
7.5 AIA LU|HSW  (AIA credits only available for attending live Webinar.)

Landscape Architects
7.5 HSW CE Hours
7.5 LA CES HSW PDHs  (LA CES credits only available for attending live Webinar.)

Floodplain Managers

International Code Council
.75 CEUs (Sitework)

Continuing Education Credit Information

This webinar offers 7.5 PDHs to professional engineers and 7.5 HSW continuing education hours to architects in all states. It offers 7.5 HSW continuing education hours to landscape architects in most states. HalfMoon Education is not seeking landscape architect approval in Florida, New Jersey, or North Carolina.

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), North Carolina (S-0130), and North Dakota.HalfMoon Education is deemed an approved continuing education sponsor for New York engineers, architects, and landscape 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), §79-1.5(i)(2)). Courses approved by the AIA/CES qualify for Florida and New Jersey architects. Other states do not preapprove continuing education providers or courses.

This course has been approved by the American Institute of Architects Continuing Education System 7.5 LU|HSW (Sponsor No. J885) and the Landscape Architect Continuing Education System for 7.5 HSW PDHs. Only full participation is reportable to the AIA/CES and LA CES.

The Association of State Floodplain Managers has approved this event for 7.5 CECs for certified floodplain managers.

The International Code Council has approved this activity for .75 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).


Curran E. Mohney RG CEG

Engineering Geologist
Mr. Mohney is the Engineering Geology Program leader for the Oregon Department of Transportation (ODOT). The Engineering Geology Program at ODOT encompasses site characterization, subsurface exploration, slopes and embankments, geologic hazards, groundwater, geotechnical instrumentation, and planning and research activities. In this role, he also oversees the Unstable Slopes (landslide/rockfall) Program for ODOT. He is a registered geologist and a certified engineering geologist in Oregon with over 25 years of experience in Oregon and the western states. Mr. Mohney has been the Engineering Geology Program leader since 2004. Prior to this, he had been a staff and project-level geologist for consulting firms and the mining industry as well as for ODOT. He is a graduate of the Geology Program at Portland State University. During his professional career, Mr. Mohney has been involved in the investigation, design, and mitigation of hundreds of landslides and rockfalls.

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 Stablization and Landslide Prevention

Delivery Method: Live Online

Course Description: This live webinar presentation examines slope mechanics and movement, slope stabilization methods, landslide hazards and risk assessment, and case histories of landslide mitigation.

Learning Objective 1:
Learners will be able to identify and describe the types of slope movement and instability and discuss the influence of water in soil and rock mechanics.

Learning Objective 2:
Learners will be able to distinguish between natural slopes and engineered slopes and explain how geological conditions, soil types and topography, along with surface and groundwater conditions affects slope stability, all of which need to be evaluated for site development.

Learning Objective 3:
Learners will be able to describe how discuss how the stability of slopes is analyzed and how that information is used to determine which stabilization method is appropriate prior to development.

Learning Objective 4:
Learners will be able to identify the elements of landslide risk and the strategies used for landslide mitigation to reduce risk to property and human safety.

LUs: 7.5                                                                                              LU Type: LU|HSWs.

Prerequisites: Familiarity with earthwork and and building site development

Advance Preparation: None

Program Level: Intermediate

Course Expiration Date: 10/13/2023

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.

Streamable MP4/PDF Price: $279.00

Currently, our self-study products DO NOT qualify for AIA, ASLA, LACES or CLARB credit.

Streamable self-study formats are available approximately 1 week after the date of the live event.

The streamable self-study package includes an MP4 format video recording of a live webinar and a PDF of the manual that was distributed for the webinar. You will receive a PDF of the course manual. The manual contains written materials prepared by the seminar speaker(s).

Completion of an online follow-up quiz is required for those seeking continuing education credit. The acceptance of self-administered continuing education activities vary widely between states and professions. Before undertaking any self-study effort, you should review the rules of your licensing/certifying entity.

HalfMoon Education guarantees its products. The self-study products are recorded from a live seminar and there are circumstances where an audio recording is not available. HalfMoon will contact you and issue a full refund if the product you ordered is not available. If you are not happy with a product you receive, you can return the product for a full refund. However, refunds will not be issued if completion certificates are requested.

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