September 9, 2020

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Robert Bachus to Present on Updates to AASHTO at the Geotechnical Engineering Seminar Series

Robert Bachus, Ph.D., P.E. (Georgia) will present "Standard of Practice Update AASHTO Subsurface Characterization Geotechnical Engineering Circular #5" at the Second Geotechnical Engineering Distinguished Seminar Series at the University of Nevada, Reno from 12:00-12:50 p.m. PDT on September 18, 2020.

Bob is a Senior Principal engineer based in Georgia with more than 30 years of professional experience focused on geotechnical engineering, geoenvironmental engineering, waste by-product characterization, and the permitting and design of waste containment facilities.

A well-rounded core curriculum combined with opportunities for students to specialize in a subfield of civil engineering gives graduates of the University of Nevada, Reno's Department of Civil and Environmental Engineering both breadth and depth of engineering knowledge. Additionally, a departmental emphasis on creating life-long learners who can communicate about technical, social, and ethical issues in engineering design prepares graduates to work well in interdisciplinary and team environments.


The (AASHTO Manual) was published by the American Association of State Highways Transportation Officials (AASHTO) in 1988 and since that time has been the "go-to" reference guide regarding the standard of practice for subsurface investigations, particularly those investigations focused on the transportation community. Over the past 30 years, subsurface geotechnical conditions may not have changed dramatically, but the techniques used by transportation agencies and their consultants for geotechnical investigation and interpretation have advanced significantly, due to improvements and reliance upon technology advancements. A similar recognition was made by the Federal Highway Administration (FHWA) with regard to its 2002 edition of Geotechnical Engineering Circular (GEC) No. 5 regarding soil and rock properties. Geosyntec Consultants (Geosyntec) was commissioned by the National Academies to prepare the revised AASHTO Manual and authored to original GEC#5. Updates to these seminal reference documents will be highlighted and discussed during the presentation.

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