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Use of soil engineering in highways is illustrated by a variety of examples from experience on turnpikes and interstate and overseas highways.
Various screening tests to supplement routine classification are suggested, as well as methods of indicating mica content and degree of nonplasticity.
Examples are presented illustrating weathering, intrusion, special considerations in compaction and pavement design, sand drains for slopes and acceleration of swelling, secondary consolidation, bearing capacity on slopes, stability of fissured clay, fills on soft soil and abutment displacement.
Problems of management and education are considered. Relation of soil to other materials is illustrated by grading requirements, shrinkage of asphalt, and swelling of masonry.
University of Maryland, College Park, Md.