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

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

Wednesday, July 13, 2022
10:00 am – 12:00 pm CDT


Presented by
Mahsa Hedayati, Ph.D., P.E.

Agenda Highlights:
Cantilever walls, their applications and components
Design processes of a cantilever retaining system
Cast in place VS precast cantilever retaining walls
Hydraulic pressure, effects on wall behavior and pressure relief systems
External and internal stability of a cantilever system
Field applications and examples
Case studies


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:
2.0 PDHs

2.0 HSW CE Hours

Landscape Architects:
2.0 HSW CE Hours
2.0 HSW PDHs

International Code Council:
.2 CEUs (Sitework)

Floodplain Managers:


Continuing Education Credit Information
See each course listing for the type and amount of each continuing education credit available. Individual courses for engineers and architects are not subject to preapproval. HalfMoon Education does not apply for land surveyor courses in NJ, MO, TN or NY unless expressly stated. The Florida DBPR Board of Landscape Architecture generally accepts courses approved by the Landscape Architecture Continuing Education System (LA CES). Landscape architects licensed in Florida are encouraged to review The 2021 Florida Statutes, 481.313(4) to determine course eligibility.

HalfMoon Education Certifying Entities
American Institute of Architects Continuing Education System (No. J885)
International Code Council (No. 1232)
Landscape Architect Continuing Education System
American Institute of Certified Planners (AICP)
Boards of Engineering: Florida (No. 0004647), Indiana (License No. CE21700059),
Maryland, New Jersey (Approval No. 24GP00000700), and North Carolina (No. S-0130).

Course-by-Course Providers:
Association of State Floodplain Managers
International Society of Arboriculture
Society of American Foresters

HalfMoon Education is deemed a New York-approved continuing education provider for 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), §69.6(i)(2), and §79-1.5(i)(2)). Only courses approved for AIA HSW credit offer credit to New York engineers and architects.

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).


Mahsa Hedayati Ph.D P.E.

Senior Geotechnical Engineer, Freese and Nichols, Inc.
Dr. Hedayati is a senior geotechnical engineer at Freese and Nichols, Inc and an adjunct faculty at the University of Texas at Arlington. Her experience with geotechnical engineering includes subsurface investigations, foundation analysis and design, slope stability and seepage analysis, numerical modeling, dam rehabilitation and redesign, levees, floodwalls and drainage structures design. As an adjunct faculty, she teaches courses on computational geotechnics and the geotechnical aspects of landfill design. Dr. Hedayati earned her B.Sc. degree in Civil Engineering from Amirkabir University of Technology (Tehran Polytechnic) and her M.Sc. degree from Tehran University, where she focused on polluted soils and decontamination methods. She earned her Ph.D. degree in Geotechnical Engineering from the University of Texas at Arlington.

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: How to Design and Construct a Cantilever Retaining Wall

Delivery Method: Live Online

Course Description: This two-hour presentation focuses on how to design and construct a cantilever retaining wall, starting with their components and applications. Design professionals will learn about the different kinds of cantilever retaining walls, the design process, and the pressure which is exerted on them, as well as examine field applications and case studies.

Learning Objectives:

Learning Objective 1:
Learners will be able to define cantilever walls, their applications and components and differentiate between cast-in-place and precast cantilever retaining walls.

Learning Objective 2:
Learners will be able to discuss the forces that act on cantilever retaining walls and the design processes that are aimed at withstanding these forces.

Learning Objective 3:
Learners will be able to discuss hydraulic pressure, the effects it has on wall behavior, and pressure relief systems.

Learning Objective 4:
Learners will be able to examine field applications and case studies to understand the best practices of cantilever retaining wall design and construction.

LUs: 2.0                                                                                           LU Type: LU|HSWs.

Prerequisites:  Familiarity with retaining walls

Advance Preparation: None

Program Level: Intermediate

Course Expiration Date: 05/04/2025

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.