Subsurface Investigation
This technical area provides method and procedural guidance concerning selection, planning, executing, contracting, quality assurance/quality control, inspection, interpretation, and report preparation for subsurface explorations involving transportation applications. The subsurface characterization techniques covered includes the in situ testing, the geophysical testing, and the laboratory test selection used to establish appropriate soil and rock design and construction parameters.
Guidance
- Checklist and Guidelines for Review of Geotechnical Reports and Preliminary Plans and Specifications (February, 2003)
- Subsurface Exploration - Geotechnical Site Characterization (May, 2002)
- Geotechnical Engineering Circular No. 5 - Evaluation of Soil and Rock Properties (April, 2002)
- Geotechnical Guideline No. 15 - Geotechnical "Differing Site Conditions" (05/02/1998)
- Differing Site Conditions (10/09/1996)
Training & Workshops
- NHI 132012 Soils and Foundations Workshop
- NHI 132041 Geotechnical Instrumentation
- NHI 132079 Subsurface Investigation Qualification
- All training