The shape factor of an I-section is

Question

Question

This question was previously asked in

UKPSC AE Civil 2013 Official Paper I

Answer 1

Explanation:

Shape factor

It is defined as the ratio of the plastic moment to yield moment.
It is a function of cross-section or shape and is represented by ' f '.
\(f = \frac{{{M_P}}}{{{M_y}}} = \frac{{{f_y}{Z_{Pz}}}}{{{f_y}{Z_{ez}}}} = \frac{{{Z_{Pz}}}}{{{Z_{ez}}}}\)

Shape factor for different cross-sectional shapes: