Torsional Properties of Steel Shapes

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This document provides essential formulas for calculating torsional section properties of structural steel shapes not included in the CISC Handbook of Steel Construction. It outlines methods for determining the St. Venant torsional constant (J), warping torsional constant (Cw), shear centre location (y₀), monosymmetry constant (βₓ), and the shear constant (CRT) for hollow structural sections. Simplified formulas and example calculations are provided to support practical use. While certain geometric complexities are excluded, references are included for those seeking more advanced derivations. This resource is intended to assist engineers in estimating section properties with clarity and efficiency.