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INSTRUCTORS:
Kelly Cabal M.ASCE
Joseph Bindner
Tom Westover, PE, MBA
Charles D. Hubbard, PE, PG
Nathan Villeneuve, CEG
Purpose and Background
These presentations were recorded at the Geo-Institute Web Conference 2025.
Site Investigation Tools of the Future (25 minutes)
This presentation explores emerging and next-generation tools that are transforming geotechnical site investigations. It discusses advancements in sensor technologies, automation, remote sensing, and data integration that improve subsurface characterization. The session highlights how real-time data collection, digital twins, and machine learning are being incorporated into modern investigation workflows. Comparisons are made between traditional investigation methods and innovative approaches that enhance accuracy and efficiency. The presentation also addresses challenges related to data interpretation, standardization, and implementation in practice. Case examples illustrate how future tools can reduce uncertainty and improve design decisions. The talk concludes with a discussion on how these technologies may reshape geotechnical engineering practice.
Particle Size Effects on Large-Diameter Penetrometers (26 minutes)
This presentation examines how soil particle size influences measurements obtained from large-diameter penetrometers. It explains the interaction between probe geometry and coarse-grained soils, highlighting differences from conventional cone penetration testing. The speaker discusses scale effects, stress distribution, and penetration resistance in sands, gravels, and mixed soils. Experimental and field data are used to demonstrate how particle size can bias strength and stiffness interpretations. The limitations of standard correlations are reviewed when applied to large-diameter devices. Practical implications for site characterization and foundation design are emphasized. Recommendations are provided for improving data interpretation in coarse-grained soils.
Evaluation and Stabilization of the Dakota-Federal 42X-36 Well Pad, Dunn County, North Dakota (31 minutes)
This presentation presents a detailed case study of the evaluation and stabilization of an oil and gas well pad in North Dakota. It describes the geotechnical challenges encountered, including weak subgrade conditions and construction-induced distress. The investigation methods used to assess soil conditions and performance are discussed in detail. Various stabilization alternatives are evaluated based on constructability, cost, and performance. The selected ground improvement and stabilization measures are explained along with construction considerations. Performance monitoring results are presented to demonstrate the effectiveness of the solution. Lessons learned are shared to guide similar projects in energy-sector developments.
Setting the Foundation: Key Advantages of Early Geotechnical Investigation in a Bi-State Bridge Project (Without State Agency Oversight) (21 minutes)
This presentation highlights the value of conducting early geotechnical investigations for a major bi-state bridge project delivered without direct state agency oversight. It explains how proactive subsurface exploration informed foundation selection and structural design decisions. The presentation discusses coordination challenges among stakeholders and the role of geotechnical data in managing project risk. Examples are provided showing how early investigation reduced design changes and construction delays. The impact of timely subsurface information on cost control and schedule certainty is emphasized. The presentation also contrasts this approach with traditional phased investigation practices. Key lessons learned are offered for complex infrastructure projects.
Benefits and Learning Outcomes
Upon completion of these sessions, you will be able to:
- Describe emerging site investigation tools and their potential benefits for subsurface characterization.
- Explain how particle size affects penetration resistance measurements from large-diameter penetrometers.
- Discuss key evaluation and stabilization strategies used to address well pad performance issues.
- Identify the advantages of conducting early geotechnical investigations on complex bridge projects.
Assessment of Learning Outcomes
Learning outcomes are assessed and achieved through passing a 10 multiple-choice question post-test with at least a 70%.
Who Should Attend?
- Geotechnical Engineers
- Engineering Geologists
- Road Designers
- Practitioners
- Geosynthetic Manufacturers
- Contractors
- Graduate Students
How to Earn your CEUs/PDHs and Receive Your Certificate of Completion
This course is worth 0.2 CEU/2 PDHs. To receive your certificate of completion, you will need to complete a short post-test online and receive a passing score of 70% or higher within 365 days of course purchase.
How do I convert CEUs to PDHs?
1.0 CEU = 10 PDHs [Example: 0.1 CEU = 1 PDH]