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(Solved): Part a: Shown in Figure 1 is the cross section of a beam. Determine: - The distance of the neutral ...



Part a:
Shown in Figure 1 is the cross section of a
beam. Determine:
- The distance of the neutral axis from the bottom edge

Part a: Shown in Figure 1 is the cross section of a beam. Determine: - The distance of the neutral axis from the bottom edge and - The second moment of area about this neutral axis. [8 Marks] Part b: If a beam of this cross section were simply supported over a span of 12 metres. Determine the maximum bending moment in the beam due to its own weight \( \left(\rho=7800 \mathrm{~kg} / \mathrm{m}^{3}\right) \). What will be the maximum tensile and compressive stresses induced in the beam. [8 Marks] Part c: Calculate the maximum concentrated load which may be supported at the mid-point of the beam if the maximum bending stress is not to exceed \( 80 \mathrm{MN} / \mathrm{m}^{2} \). [4 Marks]


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