California Department of Transportation


Geotechnical Manual

The Geotechnical Manual documents the Department’s standards of practice for geotechnical investigations, design, reporting, quality management, and other geotechnical business practices.  Geotechnical Services staff and consultants performing work on behalf of the Department must adhere to the requirements in the Geotechnical Manual.

Introduction   June 2012
Geotechnical Manual Program Delivery Plan   December 2013
Quality Management Program   May 2012
Project Management   June 2013
Geotechnical Archive   May 2013
Consultant Oversight   August 2013
Task Order Initiation   February 2017
Communication and Reporting   September 2014
  December 2009
  February 2017
  August 2015
  May 2013
  January 2006
Geotechnical Investigations   December 2014
  January 2015
  January 2015
  December 2014
  March 2012
  May 2013
  November 2014
  November 2014
  September 2010
Standard Plan Designs   November 2010
Soil Correlations   March 2014
ARS Online   January 2013
Liquefaction Evaluation   December 2014
Fault Rupture   January 2017
Conventional Retaining Walls   April 2016
Standard Plan Overhead and Changeable Message Signs   October 2014
Design Data Documentation and Geotechnical Evaluation of Anomalous CIDH Concrete Piles   December 2014
Sound Walls   July 2010
Embankments   December 2014
Rock Cut Slope Design   June 2013
Rockfall   July 2014
Ground Improvement   October 2014
Geosynthetics   June 2013
Forms and Templates    

A discussion forum titled Geotechnical Manual has been placed on the GS Discussion Board for staff to post their questions or comments.