It is the responsibility of the manual user to use the current version. Downloadable updates will be posted on this website and revision notices will be sent to ODOT staff and other users. All GDM manual documents are printable Adobe .pdf versions.
November 2015 Geotechnical Design Manual (GDM)
Chapter 1 Introduction
Chapter 2 Project Geotechnical Planning
Chapter 3 Field Investigation
Chapter 4 Soil and Rock Classification and Logging
Chapter 5 Engineering Properties of Soil and Rock
Chapter 6 Seismic Design
Chapter 12 Rock Cuts - Analysis, Design and Mitigation
Chapter 13 Landslide Investigation and Mitigation
Chapter 14 Geosynthetic Design
Chapter 15 Retaining Structures
Chapter 16 Foundation Design for Signs Signals, Luminaires, Sound Walls and Buildings
Chapter 17 Culverts and Trenchless Technology Design
Chapter 18 Construction Recommendations and Report
September 2013 Geotechnical Design Manual
Updates to the GDM are planned to be issued yearly. Changes and suggestions are to be submitted using the process described in Chapter 1 of the manual. A list of the updates are shown below as they are posted. GDM Updates Summary April 2012 GDM Updates Summary April 2011 GDM Updates Summary April 2010 GDM Updates Summary December 2009 GDM Updates Summary June 2009
GDM Updates Summary November 2008 GDM Update Summary April 2008
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