A textbook addressing the subject of soil mechanics as it relates to the behavior of unsaturated soils, or, more specifically, addressing that class of problems where the soils have a matric suction or where the pore-water pressure is negative. The text starts by introducing the breadth of unsaturated soil mechanics problems. It then presents material related to the volume-mass properties, stress state variables, flow behavior, and pore pressure parameters for unsaturated soils. It then goes on to present material on the shear strength and volume change behavior of unsaturated soils. The latter part of the text concludes with material on the transient processes of interest to geotechnical engineering. Annotation copyright Book News, Inc. Portland, Or.