Presenting both classical and state-of-the-art design and analysis techniques for earthen structures, this book provides the fundamentals of foundation engineering. It covers basic soil mechanics, and soil and groundwater modeling concepts, along with the latest research results. This new edition adds a chapter on retaining walls, new coverage of seismic bearing capacities for footings, and extensive updates to the existing chapters. The text addresses isolated and shallow footings, retaining structures, and modern methods of pile construction monitoring, as well as stability analysis and ground improvement methods.