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) and Double channel laced or battened columns.