The 6 x 12 in timber beam has been strengthened by bolting

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The 6 x 12 in timber beam has been strengthened by bolting to it the 5 x ? in steel reinforcement shown. The modulus of elasticity for wood is 1.8 x 106 psi and for steel is 29 x 106 psi. The beam is bent about a horizontal axis by a couple M = 450 kip-in. What is the maximum stress in the wood? 

Reference no: EM13345212

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