Simple Torsion theory - Torsion of hollow shaft - Uses of springs and spring deflection - Geometric forms and classification of beams - Concept of Shear force and bending moment in beams - Illustrative problems - Couple and Eccentric loads - Point of Contra-flexure - Derivation of elastic flexural formula - Illustrative Problems - Shearing stress distribution - Bending of composite or flitched beams - Methods for finding the deflection - Illustrative Examples - Macaulays Methods - Equivalent Torque - Theories of elastic failure - Elastic Stability of Columns - Comparison of Euler theory with experimental results - Energy Methods - Strain Energy in bending - Illustrative Problems