"Geotechnical Testing, Observation, and Documentation" is an in-depth field manual for soil technicians and field engineers. Designed to be a reference guide during the investigation, grading, and construction phases of geotechnical projects, Tim Davis' book has helped thousands of readers understand common laboratory and field tests, classify soil accurately, interpret project recommendations, and document the entire construction monitoring process. This updated and expanded edition offers much new material on topics such as deep foundations, asphalt, concrete, and loss prevention. Commonly asked questions appear at the end of every chapter, and a comprehensive case study presents each step of a sample project, from site investigation and lab work through construction and documentation. A quick reference chapter summarizes current tools and references, explains survey and grading stakes, evaluates compaction equipment, and presents frequently used formulas and equations. In the appendixes, the glossary has been significantly expanded, an answer key to chapter questions is provided, and a collection of sample forms and diagrams is available for immediate use." Geotechnical Testing, Observation, and Documentation, Second Edition", is valuable useful for training new technicians and providing a refresher for veterans. Soil technicians contemplating the NICET or ICC certification exams will find this book an essential test preparation aid.