Problem 1 The structure shown in Fig. 1.1 is made with a steel bar that has a rectangular cross-section 5 cm tall and 10 cm wide. y A 2m m 750

N/m 1.5 m 2 m E B 1m 750 N/m 4 m 1500 N Fig 1.1. Frame supporting point and distributed loads Given the geometry, loads and supports in the structure draw the bending moment diagrams for segments A-C and D-E of the structure. Then, use the diagrams to find the critical section and calculate the maximum bending stress in segment AC.