GREGORY GEOTECHNICAL (GREGEO) was formed by Garry H. Gregory, Ph.D., P.E. in April 1998, in Fort Worth, Texas. Our offices were relocated to Stillwater, Oklahoma in August 2002. At the time GREGEO was established, Dr. Gregory had more than 32 years of civil/geotechnical engineering and construction management experience, and had been in key positions with major geotechnical and civil engineering firms. His past employment included positions as Principal with the firm of Freese and Nichols, Inc., and Vice President and Senior Geotechnical Consultant with Fugro-McClelland, Inc. Our offices were relocated to Stillwater, Oklahoma to be more centrally located to our National service area and client base, while remaining within easy access of our Texas service area.

GREGEO was established to provide high-level geotechnical engineering and consulting on complex and specialized projects to a broad range of clients on a National basis. Texas remains one of our most active service areas, with numerous major projects ongoing in the Dallas-Fort Worth and Austin areas. GREGEO has provided professional services on projects in 9 states, to date. GREGEO provides both full service geotechnical engineering (field exploration, laboratory testing, and analyses) and specialty geotechnical consulting services. We have our own advanced geotechnical engineering laboratory at our Stillwater facility. GREGEO has a network of field drilling subcontractors who are familiar with performing field exploration services to GREGEO’s specifications and standards. A GREGEO representative (senior technician or geologist) accompanies the drill crews to coordinate the drilling activities, log the soil borings, and collect samples for transportation to our laboratory. We are experienced in installation and monitoring of geotechnical instrumentation such as settlement cells, vibrating wire piezometers, and slope inclinometers.

GREGEO has a full complement of the latest geotechnical engineering software including software for performing slope stability analysis, finite-element seepage analysis, generation of computer soil boring logs and test reports, settlement analysis, stress analysis in soil masses, finite-element soil-pipe interaction analysis, finite-element stress-strain analysis for tunnels and embankments, pavement analysis and design, and the latest office support software.