Soil and Rock Logging, Classification, and Presentation
The Soil and Rock Logging, Classification, and Presentation Manual, which is included in the Geotechnical Manual, documents the Department’s standard of practice for describing and presenting soil and rock encountered during and after drilling investigations. The terminology, definitions, and formatting of soil and rock descriptions presented in these documents are used in all products (i.e., reports, correspondence, figures) produced by or for Caltrans.
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Current Version: Implementation Date - July 1, 2023
- Soil and Rock Logging, Classification, and Presentation Manual - 2022 Edition (PDF)
- All updates from the 2010 version are documented in the Revision Log (PDF)
Previous Version:
- Soil and Rock Logging, Classification, and Presentation Manual - 2010 Edition (PDF)
- Errata Sheet - April 2022 (PDF)
Border Sheets: