A 3-span continuous steel beam of l-section is subjected to a uniformly distributed load w. Lateral displacement of the beam is restrained. Its shear force diagram, bending moment diagram, and the critical locations (point A, B, C, D, E, F, G) are shown in Figure 1(a). The beam cross-section is shown in Figure 1(b). The steel material has a yield strength of fy. a) Identify failure modes that could occur in the beam, and the possible failure locations in the beam. Explain the condition under which each failure mode occurs according to Eurocode 3, and the corresponding failure location in the beam. b) Explain how each of the identified failure modes can be prevented from occurring. 0.4L B D 0.6L C 0.5L 0.5L D Figure 1(a) B E B I t Figure 1(b) 0.6L 0.4L G