Garry H. Gregory, Ph.D., P.E., S.E., BC.GE, Dist.M.ASCE, principal consultant with Gregory Geotechnical, has been honored with inclusion by ASCE in its 2026 class of distinguished members. He was selected for successfully combining theory and practice in limit equilibrium slope stability analyses, pioneering design and construction methods for slope stabilization using fiber-reinforced soil, and mentoring countless engineers in slope stability analysis, and geotechnical practice throughout his career.
ASCE will honor Gregory and the 2026 distinguished members at the 2026 OPAL Gala, Thursday, Oct. 15 in Reston, Virginia.
Gregory is eminent in the field of slope stability as it applies to dams, landslides, levees, highway embankments, and more. He developed his own software, GEOSTASE, to solve the slope stability problem by using limit equilibrium, and as a result is known worldwide for his problem-solving skills in slope stability.
He is also a pioneer in the use of fiber-reinforced soil for the stabilization of soil slopes and has designed more than 25 fiber-reinforced slopes, including the two largest in the U.S. He has been a mentor and consultant to many engineers on slope stability matters and geotechnical engineering practice and to many students during his time teaching as an adjunct full professor at Oklahoma State University.
Gregory has more than 50 years of experience as a practicing geotechnical engineer. He has been senior geotechnical consultant, principal in charge, project manager, or design engineer on many civil engineering projects involving the stability of embankment dams and heavy earthwork, heavy foundations, geotechnics of pipeline embedment and backfill and soil-pipe interaction, pavement design, and geosynthetics. High-profile projects in which Gregory has played a significant role include the Dallas Cowboys Stadium in Arlington, Texas; the Lake Ralph Hall Reservoir in North Texas; the Dow Harris Reservoir Expansion Project near Angleton, Texas; the Arbuckle Reservoir Seepage Rehabilitation Project in Wharton County, Texas; and the George Bush Turnpike in Carrollton, Texas. He was the executive project manager for a large portion of the World’s Fair construction in Knoxville, Tennessee.
He is the author of more than 60 technical papers that have been published in professional journals, conference proceedings, and lecture series. A longtime member of ASCE, he was the 2016-17 president of the Society’s Geo-Institute and has been an active member of the Embankments, Dams, and Slopes Committee for approximately 28 years as well as serving as committee chair from 2012-2014.
Gregory was selected as the Outstanding Oklahoma Geotechnical Engineer for 2016-17. He is also a full member of the Association of Environmental and Engineering Geologists, a member of the Deep Foundations Institute, or DFI, and an active member of the DFI Deep Foundations for Landslides/Slope Stabilization committee.
He is a licensed professional engineer in 12 states and is also a licensed structural engineer in Oklahoma. He has bachelor’s, master’s, and Ph.D. degrees in civil (geotechnical) engineering, and his doctoral degree was earned from Oklahoma State University. Gregory is an honor member of Chi Epsilon, the National Civil Engineering Honor Society.
Nominations for the 2027 class are due Dec. 15. Email [email protected] for more information.
