Retaining Wall Basics
Thursday, December 14, 2017, 11:00 AM – 12:00 PM CST

   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, December 14, 2017, 12:30 – 2:30 PM CST

   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, December 15, 2017, 11:00 AM – 12:30 PM CST

   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, December 15, 2017, 1:00 – 2:30 PM CST

   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

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


     6.0 HSW Contact Hours

     6.0 HSW LUs

     6.0 PDHs

Continuing Education Credit Information

HalfMoon Education is an American Institute of Architects-approved continuing education sponsor (No. J885), and is deemed an approved 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 contact hours available. HalfMoon Education is an approved engineer continuing education provider in Florida, Indiana, Louisiana, 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). Please see the International Energy Conservation Code and the Seismic Design and Construction webinars for available CEUs. 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 credit approval.


Bill Simpson, P.E.

Geotechnical Structure Design Specialist at Gradelta Engineering

Mr. Simpson founded Gradelta Engineering in 2020 with the intent to help clients better understand the combination of geotechnical and structural engineering that he has worked with for the past 20 years. He earned his B.S.C.E. and M.S.C.E. degrees from Georgia Institute of Technology. He currently provides engineering services to contractors and fellow engineers for earth structure pricing, along with the plans and calculations needed for construction. He frequently consults with clients regarding the optimal structure type and location on the construction site to minimize risk and maximize useable space. He also works in the education sector providing not just seminars such as this one, but also acting as a subject matter expert creating study guide and test prep content for the NCEES Professional Civil Engineer exam. Mr. Simpson has also worked with lawyers and insurance companies during forensic investigation and lawsuits surrounding retaining walls and slope failures. His hope is that through the instructional services that he currently provides, slopes will remain stable and retaining wall failure will be eliminated.

There are 4 Courses in This Seminar

Retaining Wall Basics

Retaining Wall Basics

December 14, 2017 Webinar Bill Simpson
Geosynthetics and Retaining Walls

Geosynthetics and Retaining Walls

December 14, 2017 Webinar Bill Simpson
Slope Stability and Geosynthetics

Slope Stability and Geosynthetics

December 15, 2017 Webinar Bill Simpson
Slope and Retaining Wall Failures, Fixes and Prevention

Slope and Retaining Wall Failures, Fixes and Prevention

December 15, 2017 Webinar Bill Simpson