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A concrete bridge girder with a span of 45m is to be installed in summer with temperature of 25C. The temperature in winter is expected

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A concrete bridge girder with a span of 45m is to be installed in summer with temperature of 25"C. The temperature in winter is expected to be -30 0 Cakulate the thermal movement of the bridge girder. (TONY 21 if this thermal movement is restrained due to the malfunction of bearing pad, calculate the thermal stress in the bridge girder, (10N)

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