Geotechnical Manual

The Geotechnical Manual documents the Department's standards of practice for geotechnical investigations, design, and reporting.

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Table of Contents

Section Implementation Date  Revision Log
Introduction (PDF) January 2020
 PDF
Reporting Standards  
Foundation Reports for Bridges (PDF) August 2018  PDF
Foundation Reports for Earth Retaining Systems
June 2017   PDF
Foundation Reports for Buildings
January 2020
  PDF
Geotechnical Design Reports
January 2020
  PDF
Investigations  
Geotechnical Investigations (PDF) July 2017   PDF
Soil and Rock Logging
September 2019
  PDF
Borehole Location (PDF)
March 2012   PDF
Standard Plan Designs (PDF) November 2010   PDF
Soil Correlations (PDF)
March 2014   PDF
Design  
Standard Plan Designs
November 2010
  PDF
Sound Walls July 2010   PDF
Standard Plan Overhead and Changeable Message Signs (PDF) October 2014   PDF
Seismic  
Liquefaction Evaluation January 2020
  PDF
Fault Rupture (PDF) January 2017   PDF
Lateral Spreading   (Example)
January 2020
  PDF
Earth Retaining Systems
 
Conventional Retaining Walls (PDF)
April 2016   PDF
Mechanically Stabilized Embankments (Caltrans Pre-Designed) (PDF) June 2017   PDF
Mechanically Stabilized Embankments (Non-Standard Design)
January 2020
  PDF
Soil Nail Walls January 2020   PDF
Non-Gravity Cantilever Retaining Walls
January 2020
  PDF
Ground Anchor Retaining Walls
January 2020
  PDF
Seismic Design of Retaining Walls
January 2020   PDF
Structure Foundations
 
Driven Pile Foundations
June 2017   PDF
Cast-In-Drilled-Hole (CIDH) Pile Foundations June 2017   PDF
Design Data Documentation and Geotechnical Evaluation of Anomalous CIDH Concrete Piles December 2014   PDF
Downdrag
January 2020
  PDF
Micropiles January 2020   PDF
Vertical Ground Anchors January 2020    PDF
Earthwork  
Embankments (PDF) December 2014   PDF
Landslides January 2020
  PDF
Soil Cut Slopes
January 2020   PDF
Rock Cut Slopes (PDF)
June 2013   PDF
Rockfall July 2014   PDF
Ground Improvement (PDF) October 2014   PDF
Geosynthetics (PDF) June 2013   PDF
Emergency Response
January 2020
  PDF

Forms and Templates

  • Seismic Design Data Sheet – ARS Online V2

  • Seismic Design Data Sheet – ARS Online V3