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.
December 2009 Geotechnical Design Manual (GDM) - (Printable Adobe .PDF Version)
Volume 1 - Chapter 1 - 14 Volume 2 - Chapter 15 Retaining Structures Volume 3 - Chapter 16 - 22
June 2009 Geotechnical Design Manual (GDM) - (Printable Adobe .PDF Version)
November 2008 Geotechnical Design Manual (GDM) - (Printable Adobe .PDF Version)
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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