Geosynthetic Institute
Civil EngineeringPennsylvania, United States2-10 Employees
Geosynthetic Institute (GSI) is a small consortium of organizations focused on geosynthetics within civil engineering, encompassing a wide range of polymeric geosynthetic materials. Its membership includes federal and state agencies, facility owners, designers and consultants, QA/QC bodies, testing laboratories, resin and additive suppliers, manufacturers and their representatives, and installation contractors, totaling 71 member organizations with about half located outside the United States. The group is based in Folsom, Pennsylvania, and functions as a shared platform for coordination and knowledge exchange on geosynthetics. In March 2026, GSI announced the closure of its Philadelphia-area offices and relocation to Tech's campus.