U-section
<img src="https://eng-calculations.com/SVG/Roark(and39)s_formulas_for_Stress_and_Strain/Formulas_for_torsional_deformation_and_stress_(TABLE_10(and46)1)/U-section.svg" alt="U-section" title="U-section">
https://eng-calculations.com/SVG/Roark(and39)s_formulas_for_Stress_and_Strain/Formulas_for_torsional_deformation_and_stress_(TABLE_10(and46)1)/U-section.svg