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Engineering · Civil Engineering
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please answer the question clearly and with steps !(a) For the section shown in Figures 1, determine the location (from the bottom edge) of the horizontal neutral axis and the second moment of area, Ixx. The section has a hole of 80mm x 100mm as shown. (60%) (b) The section is used for a simply supported beam with a point load acting at mid-span. The maximum moment obtained at mid-span is 240 kNm. Determine the numerically maximum bending stress in the section. State whether it is a compressive or tensile stress and indicate where the maximum stress occurs in the section. (40%) 80 80 40 100 100 100 60 60 120 Figure 1 (All dimensions in mm)

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