This laboratory text has been written to introduce the basic essentials of the laboratory testing of soils, including methods of data collection, computations, and presentation of results. All of the illustrative data sheets contain actual soil test data, using metric equipment this laboratory text has been written to introduce the basic essentials of the laboratory testing of soils, including methods of data collection, computations, and presentation of results. All of the illustrative data sheets contain actual soil test data obtained by me or under my supervision, using metric equipment and not merely conversion of units.This third edition has been rewritten and updated as necessary to conform as close as practical to the ASTM and AASHTO standards for soil testing.