This new revised edition of Strength of Materials is a textbook for all undergraduate and diploma courses in civil as well as mechanical engineering disciplines. It is an invaluable resource for professionals and practitioners alike as it offers crisp and precise explanation of concepts underlying the analysis and design of structures. UPSC aspirants can refer this book for good theoretical understanding as well as for solved problems from previous UPSC examinations. With two newly introduced chapters on curved bars and beams and stresses due to rotation, the book not only provides a wider coverage of the subject but it also delves deeper into the chapters through its additional application-oriented solved examples. The improved illustrations depicting all the 2D and 3D structures and their sections provide a better visual readability to the book. This edition is a rich and comprehensive resource for one and all.