Developed from the author s lectures and years of teaching experience, this book presents the principles behind the methods of solving problems on material behavior when subjected to different types of loads. It elucidates the subject in simple language to enable students to comprehend the principles involved. Each chapter presents definitions, analysis of problems involved, derivations, and applications. The book contains more than 380 worked examples as well as exercises at the end of each chapter for practice. SI units have been adopted throughout the book.