Problem 1.57* A 40-kg platform is attached to the end B of a 50-kg wooden beam AB, which is supported as shown by a pin at A and by a slender steel rod BC with a 12-kN ultimate load. (a) Using the Load and Resis¬tance Factor Design method with a resistance factor ? = 0.90 and load factors ?D = 1.25 and ?L = 1.6, determine the largest load that can be safely placed on the platform. (b) What is the corresponding conventional factor of safety for rod BC?
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