Though determining plastic modulus of section assuming the section to consist of rectangular parts are within the reach of a design engineer, but as Indian Rolled Steel Sections consist of sloping flanges, fillets at junctions and rounded edges are slightly complex. The authors have considered all the complexities in the shapes of Rolled Steel Sections and have determined Plastic Modulus of Steel Sections for I-beams, Channels, Tee-sections, Equal and Unequal Angle sections, I-beams with cover plates on both flanges and I-beams with Channel section on the upper compression flange (for Gantry Girders). Besides this buckling class of the sections in bending and axial compression are also provided.