Q.4 A simply supported U beam is loaded as shown in Figure Q.4(a). Its cross section...

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Q.4 A simply supported U beam is loaded as shown in Figure Q.4(a). Its cross section is shown in Figure Q.4(b). w kN/m 8 m Figure Q.4(a) X yc XX 25 y 250 y ** 25 Figure Q.4(b) (All dimensions are in mm) 240 60 X (a) Calculate the distance (ye) between the neutral X-X axis and the bottom of the beam for the section as shown in Figure Q.4(b). (2 marks) (b) Determine its moment of inertia (Ixx) about the neutral X-X axis. (6 marks) (c) If the maximum bending stresses in the beam are 355 N/mm, determine the maximum uniformly distributed load w that the beam can carry. (9 marks) (d) Determine the maximum shear stress in the beam under the uniformly distributed load w obtained in part (c). (8 marks) Q.4 A simply supported U beam is loaded as shown in Figure Q.4(a). Its cross section is shown in Figure Q.4(b). w kN/m 8 m Figure Q.4(a) X yc XX 25 y 250 y ** 25 Figure Q.4(b) (All dimensions are in mm) 240 60 X (a) Calculate the distance (ye) between the neutral X-X axis and the bottom of the beam for the section as shown in Figure Q.4(b). (2 marks) (b) Determine its moment of inertia (Ixx) about the neutral X-X axis. (6 marks) (c) If the maximum bending stresses in the beam are 355 N/mm, determine the maximum uniformly distributed load w that the beam can carry. (9 marks) (d) Determine the maximum shear stress in the beam under the uniformly distributed load w obtained in part (c). (8 marks)

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Solutions Step 1 Explanation We will solve this problem by first calculating the distance yc between ... View the full answer