Type of stresses and strains; relation between stress and strain mechanical properties of materials; axial force; torsion; shear and bending moment diagrams; bending and shear stresses in beams; deflection of beams; combined stresses and principal stresses; Mohrs circle for plane stresses, buckling of columns; theories of failure; Applied theory strain energy: Composite and reinforced concrete beams, unsymmetrical bending, shear stresses in thin-walled members subjected to torsion