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Presenter: Bill Simpson, PE

Seminar Date:

Seminar Location: Online

This seminar is closed or full.


Retaining Wall Basics
Thursday, July 26, 2018, 11:00 AM - 12:00 PM CDT

   Retaining walls: What they do and how they do it

      - Identifying and quantifying forces acting on retaining walls

      - Weight of the wall

      - Pressure from retained soil

      - Pressure on foundation of wall

      - Characteristics of soil

      - Loads on retained soil

      - Impacts of water - liquid and frozen

      - Expansion/contraction

   Equations and examples

Geosynthetics and Retaining Walls
Thursday, July 26, 2018, 12:30 - 3:00 PM CDT

   Types of retaining walls


   Failure modes

   Design methodologies

   Calculations and software

   Learn to visually identify geosynthetics as to type, 
     method of manufacture, relative strength, and relative cost


Slope Stability and Geosynthetics
Friday, July 27, 2018, 11:00 AM - 12:30 PM CDT

   Slope stability concerns

      - What to look for

      - Causes of instability

   Stabilization techniques

      - Unloading

      - Drainage

      - Reinforcement

   Fundamental soil characteristics and slope instability

   Engineering mechanics underlying slope instability

   Geologic conditions and construction practices

   Field observations to distinguish types of instability

   Design methodologies

   Failure modes

   Exercise (unreinforced and reinforced)

Slope and Retaining Wall Failures, Fixes and Prevention
Friday, July 27, 2018, 1:00 - 3:00 PM CDT

   How to prevent a potential problem or failure

      - Before construction (design practices)

      - During construction

      - After construction

   How to recognize a potential problem or failure in the field

   Typical causes of problems or failures with geotechnical structures

   Case studies/examples of failures and repairs

   Construction practices to improve or restore stability

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 date of 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 system requirements:

Operating System:
Windows 7, Windows 8 or Windows 10 Mac OSX 10.9 (Mavericks) - 10.12 (Sierra)

Web Browser:
Chrome v34+, Firefox v34+, Internet Explorer 8+, Microsoft Edge v12+, Safari v6+

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

Credit Information:

Who Should Attend

  • Architects
  • Engineers

     7.0 HSW CE Hours

     7.0 HSW LUs

     7.0 PDHs

Continuing Education Credit Information

HalfMoon Education is an American Institute of Architects-approved continuing education sponsor (No. J885) and is deemed an approved continuing education sponsor for architects in New York. These webinars are not approved for Florida architects. Other states do not preapprove educators or courses. Check each webinar for the number of continuing education hours available. HalfMoon Education is an approved engineer continuing education provider in Florida, Indiana, Maryland, New Jersey (Approval No. 24GP00000700), New York (NYSED Sponsor No. 35), North Carolina, and North Dakota. Other states do not preapprove educators or courses. These webinars offer engineer continuing education credit in all states. Check each course listing for the number of PDHs available. HalfMoon Education is an International Code Council Preferred Provider (1232). Participation and knowledge retention will be verified for these webinar events, certificates of completion will be provided, and LUs will be reported to the AIA. Please see individual course listings for available credit approval.


Bill Simpson, PE

Engineered Earth Solutions, LLC

Mr. Simpson is a geotechnical structure design specialist at Engineered Earth Solutions, LLC. He has designed and reviewed shop drawings for construction and repair of earth structures in the public and private sectors in over 30 states, and he consistently works on more than 1,200 projects and 10 million square feet each year. He performs site visits for new project reconnaissance, construction verification, and construction assistance. Mr. Simpson manages, supervises, instructs, and mentors a team of staff engineers to ensure strict deadlines are met for construction schedules while maintaining design and analysis accuracy. He works with owners, site designers, and contractors to provide designs which are not only structurally sufficient but also financially responsible. Mr. Simpson earned his B.S.C.E. and M.S.C.E. degrees from Georgia Institute of Technology.

Tuition Costs:

Standard Tuition: $350.00
Online Tuition (pre-registration): $300.00

Each registration includes one copy of a manual prepared by the seminar speakers.