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AASHTO updates subsurface investigations guide
October 10th, 2022
The American Association of State Highway and Transportation Officials recently published Manual on Subsurface Investigations, 2nd Edition, which supersedes the first edition issued in 1988. Above graphic courtesy of AASHTO. This manual describes the elements, considerations, investigation tools and techniques, and reporting requirements for geotechnical subsurface investigations for transportation facilities. This second edition features updates addressing advancements […]