GREGORY GEOTECHNICAL SOFTWARE is a division of GREGORY GEOTECHNICAL.  Over the years, Dr. Gregory has developed numerous computer programs for geotechnical applications for his own project use. GREGORY GEOTECHNICAL SOFTWARE was established as a Division of GREGORY GEOTECHNICAL to offer a variety of these custom geotechnical engineering programs to the engineering community. Dr. Gregory’s broad experience in geotechnical engineering applications has resulted in practical, engineering-oriented geotechnical programs at reasonable prices. Dr. Gregory provides technical support for the programs and is available by special arrangement to provide training on use of the programs.

View and Print Order Forms for GEOSTASE (See brief description below):

USA Order Form

USA Academic Order Form

International (Outside USA) Order Form

USA Network Order Form

GEOSTASE®

Slope Stability Analysis Software

Version 4.30.32 (Released October 2023)
GEOSTASE® is a 2-D and 3D limit equilibrium slope stability analysis software program developed by Dr. Garry H. Gregory, Ph.D., P.E., S.E., BC.GE, Principal Consultant with GREGORY GEOTECHNICAL (GREGEO). The name GEOSTASE® is an acronym for General Equilibrium Options for STability Analysis of Slopes and Embankments. The name is a United States Registered Trademark (Registration No. 4,000,187) owned by Dr. Gregory. The program was written in Visual Fortran (double precision) using the Fortran 95 and later language versions. The program was developed for the Microsoft Windows® operating system and explicitly accommodates either English or SI units. GEOSTASE® version 4.30.32 is a 64 bit program and is compatible with Windows 7, 8, 10, and 11. GEOSTASE was originally released in January 2018. Dr. Gregory has been using the program on all his slope stability analyses for more than 10 years prior to the initial release, involving hundreds of complex analyses.

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