Bashar S. Qubain, Ph.D., P.E.
Eric J. Seksinsky, P.G., P.E.
Jianchao Li , P.E.


As president, chief engineer and founder of GeoStructures, Bashar S. Qubain, Ph.D., P.E. is responsible for all activities of the firm including: (1) supervising, reviewing and training of personnel; (2) maintaining high quality services and establishing goals; (3) providing technical expertise and overseeing engineering work; and (4) coordinating with clients and preparing proposals. Dr. Qubain’s areas of strength are: soil mechanics and foundations; geotechnical applications of the finite element method (FEM); and geosynthetics. With a strong background in both structural and geotechnical engineering, he brings unique insight into the solution of complex foundation problems. 


Dr. Qubain has nearly 20 years of professional experience in subsurface investigations for buildings, bridges, tunnels, earth dams and sensitive machines. Through his professional career, he developed considerable expertise in foundation analysis and design, soil-structure interaction, slope stability analysis, sinkhole evaluation and remediation, soil stabilization, and pavement and geosynthetic reinforcement design. He has served as the chief geotechnical engineer on many transportation projects for the Pennsylvania Turnpike, PennDOT, NJDOT, DelDOT and SEPTA as well as numerous commercial and industrial ones such as Wyeth Worldwide Headquarters in Collegeville, PA, Riverview Development along the Hudson River in North Bergen, NJ and Tinicum Hilton Hotel, just outside Philadelphia International Airport. On a recent open-end contract for the PA Turnpike, Dr. Qubain implemented a pilot program to evaluate all aspects of subgrade lime stabilization such as hydration, mixing, mellowing, stabilization depth/uniformity, compaction, and roller specifications.


In addition to professional practice, Dr. Qubain is active in research and teaching. He proposed a rational method for studying the fundamental aspects of the stress-deformation behavior of footing foundation systems on sand and developed a new constitutive model, which captures the single most important aspect of soil behavior: the increase in stiffness due to confinement. This unique property makes soil stronger under certain applied loads. The nonlinear stress-strain relationships of the proposed model were incorporated into a comprehensive finite element analysis for footing foundations. Dr. Qubain also participated and served as the principal investigator for several small business innovative research (SBIR) projects for the U.S. Department of Energy and PennDOT. He presented professional seminars on innovative underpinning and sinkholes. Dr. Qubain was an adjunct professor of geotechnical engineering at Drexel University and currently teaches at Temple University. He regularly serves on Ph.D. research committees. His advanced graduate course on constitutive modeling in geomechanics is attended by most research-oriented students. He authored or co-authored over a dozen technical publications and is actively involved in peer-reviewing journal and specialty conference papers as well as complex foundation problems.


Dr. Qubain is a registered professional engineer and a member of the American Society of Civil Engineers, the American Concrete Institute, the American Society of Highway Engineers, and the American Society for Testing and Materials. He also serves as a member of the Transportation Research Board (TRB) Committee on Chemical and Mechanical Stabilization of Soils (AFS90). He received his Bachelor’s degree in civil engineering (a 5 year program) from the University of Jordan and holds two masters degrees—one in structural mechanics from Widener University and one in geosynthetics and geotechnical engineering from Drexel University. In 1999, he completed his Ph.D. on soil-structure interaction at Drexel University with technical guidance from faculty at the University of Delaware.



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