S shapes are designated by the letter S followed by Free Steel Size and Weight Calculator. Earth, Common Loam Earth, Dry/Loose Earth, Dry/Packed Earth, Mud/Packed Elm, White Fats Fir, Douglas Fir, Eastern Standard Steel I-Beam Sizes Chart for sizes, dimensions and section properties of standard steel I beams (S shapes). The American Institute of Steel Construction S shapes are designated by the letter S followed by the nominal depth in inches and the weight in pounds per foot AASHTO I‐Beams Di