(15%) Problem 3 (Pro 8.15 Textbook modified): The cross-section of the rough-cut timber beam shown is loaded with (W) over six feet of the span. Determine the maximum value of (W

#/ft.) if the allowable bending stress is Fb = 1,600 psi and the allowable shear stress is Fv = 85 psi. 6" A = 72 in.? Ir = ((123) 12 c = 6" 12" 864in Ix864in.4 sz=-= - = 144in_3 6in. 늘 뽈 =10' MMAX = WL² LOAD WL 기 다 M'