This well-established book, now in its Fourth Edition, includes the positive feedback and constructive suggestions received from academics and students alike on the third edition. While retaining the major contents of the earlier editions, this edition incorporates a new chapter on the significance and impacts of Climate Change on the practice of Geotechnical Engineering. Some of these impacts are direct, e.g., desertification, flooding. Others are indirect, e.g., population migration, agriculture. Geotechnical engineers have to be prepared with plans to mitigate the impacts of these aspects. Case histories have been included to illustrate how advance preparedness may greatly help in providing relief and rehabilitation to the people in affected regions. The text skillfully integrates theory and practice and is suitable as a textbook for undergraduate students of civil engineering. Logical organization and presentation of topics makes the book interesting and easily accessible. This textbook fully covers the requirements of geotechnical courses at undergraduate level prescribed in various universities. The book can also be used, by a judicious choice of topics, by the polytechnic students. KEY FEATURES Contains plenty of worked-out numerical examples Provides a large number of objective type questions and exercises Analyzes field problems and case histories TARGET AUDIENCE BE/B.Tech (Civil Engineering) Diploma courses in Civil Engineering