Textbook in PDF format

Intended as an introductory text in soil mechanics, the eighth edition of Das, Principles of Geotechnical Engineering offers an overview of soil properties and mechanics together with coverage of field practices and basic engineering procedure. Background information needed to support study in later design-oriented courses or in professional practice is provided through a wealth of comprehensive discussions, detailed explanations, and more figures and worked out problems than any other text in the market.
Contents
Geotechnical Engineering – A Historical Perspective.
Origins of Soil and Grain Size.
Weight-Volume Relationships.
Plasticity and Structure of Soil.
Classification of Soil.
Soil Compaction.
Permeability.
Seepage.
In Situ Stresses.
Stresses in a Soil Mass.
Compressibility of Soil.
Shear Strength of Soil.
Lateral Earth Pressure: At-Rest, Rankine, and Coulomb.
Lateral Earth Pressure: Curved Failure Surface.
Slope Stability.
Soil-Bearing Capacity for Shallow Foundations.
Subsoil Exploration.
Appendix A. A Generalized Case for Rankine Active and Passive Pressure – Granular Backfill