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Question 3 1) Consider Beam ACB in Figure Q3(1), determine the maximum positive moment at point C (mid-point of span AB) of the beam and show the corresponding locations of the moving loads. A moment rendering the beam bottom tension is considered positive. (14 marks) 8 kN 4 kN 6 kN 5 m Figure Q3(1) 2) Consider the cantilever shown in Figure Q3(2), draw the influence lines for (a) the moment at Support A, and (b) the shear force at Point B. Assume Support A is fixed. (6 marks) 1.5 m 1.5 m ta毗 144 1

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