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Anchored Earth Retention
A joint ADSC-DFI committee of industry-wide professionals who design, construct and supply equipment for temporary and permanent support of retaining structures using ground anchor techniques, such as tiebacks and soil nails. Through the use of education, training, seminars, research, specifications, and other means, this committee works with public and private owners, contractors and suppliers to increase the use, understanding, quality and economy of earth retention structures that use ground anchor techniques.
Committee Chairs

Co-Chair
Jeff Segar, P.E., S.E.
GeoStabilization International
After two decades as a consultant, Jeff Segar, P.E., S.E., joined GeoStabilization International (GSI) where he is a deputy chief engineer. Segar has been the engineer of record and is responsible for project related design and the production of construction documents for many types of structures and geostructures. He currently provides geostructural engineering services for support of excavation, slope stabilization, soil nailing and micropiles. Segar currently serves on the Board of Directors for the International Association of Foundation Drilling (ADSC).

Co-Chair
Vaughn J. Godet is a vice president with Berkel & Company Contractors, Inc. and has over 20 years in geotechnical engineering and design-build construction. He is a licensed professional engineer in several states. Godet previously served as vice chair of DFI’s Anchored Earth Retention committee for 12 years.
Fundamentals
Our fundamentals lay the deep foundations for all our work.
- FHWA Geotechnical Engineering Circular No. 7 Soil Nail Walls – Reference Manual
- FHWA Geotechnical Engineering Circular No. 4 Ground Anchors and Anchored Systems
- Post Tensioning Institute, Recommendations for Prestressed Rock and Soil Anchors
- GeoConstructability – An Owner’s Guide to Obtaining Essential Geotechnical Information for Construction