Strength of Materials, 3rd Edition is ideal for students pursuing degrees in civil and mechanical engineering, as well as computer science, electronics, and instrumentation. Topics include combined stresses, centroid and the moment of inertia, shear forces and bending moments in beams, stresses in beams, the deflection of beams, torsion of circular members, springs, strain energy, the theory of elastic failure, buckling of columns, pressure vessels, and the analysis of framed structures. The general arrangement of the new edition of the book remains unchanged however the text has been thoroughly revised. Also, several new solved problems in the chapters have been added. It continues to provide students with a sound understanding of the fundamental concepts of civil structures, machine elements, and other components. A large number of New Solved Examples (about 50) have been added in the chapters such as 1, 2, 5, 6, 7, 10, and 13. Model Multiple Choice Questions (about 250) have been added at the end to test the understanding of students and to provide and approach for competitive examinations. A new chapter (Chapter 14) on Mechanical Testing of Materials has been introduced. The entire text has been thoroughly revised and updated to eliminate the possible errors left out in the previous editions of the book. The Third Edition is augmented by more than 100 pages and the scope of the book has been further increased.