The Structural Engineer > Archive > Volume 43 (1965) > Issues > Issue 7 > A Procedure for Calculating the Plastic Collapse of I-Sections under Bending and Torsion
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A Procedure for Calculating the Plastic Collapse of I-Sections under Bending and Torsion

A simple design procedure is outlined for calculating the bending moment and torque which will cause a plastic hinge to form in an I-section member. The effect of restraint of warping of the cross-section on the torque carrying capacity is taken into account. Experiments on the torsional strength of I-sections with warping restraint and on the combined action of bending and torsion show the proposed design method to be safe and suitable for the design of I-section members under these conditions. K.S. Dinno and W. Merchant