Gere & Goodno — Stresses in Beams (Basic Topics): Problem 5.6-24

5.6-24 A retaining wall (Fig. a) is constructed using steel IPN shape columns and concrete panel infill (Fig. b). Each column is subjected to lateral soil pressure with peak intensity \( q_0 \) (Figs. b and c). The tensile and compressive strength of the beam is 600 MPa. Select the most economical IPN section from Table F-2 based on safety factor of 3.0. (Given in Figure (c): \( L = 4 \text{ m} \), \( q_0 = 80 \text{ kN/m} \))