Ground Improvement

Leading the use of column-supported embankments on load transfer platforms in the United States


TCG has performed forensic analysis and provided expert testimony in over 100 geotechnical failures over the last 30 years


Performing product evaluations


Certified NHI Instructor


View a sample of our projects

Licensed Professional Engineer:  AL, AK, CT, DC, FL, GA, ID, IL, KS, MA, MD, MN, MS, MT, NC, ND, NJ, NY, NH, OH, PA, TN, UT, VA, WV, WI

Dr. Collin founded The Collin Group, Ltd. in 1995. The firm specializes in soil-structure interaction, numerical modeling, earth retaining structure design, ground improvement, geosynthetics, mechanically stabilized earth and reinforced soil slopes, soil nailing, and forensic evaluation of geotechnical structures.


James G. Collin

Ph.D., PE, D.GE., F. ASCE

Our mission is to use our skills and experience to provide our clients with the right solution for their project