6-193. Determine the largest uniformly distributed load w that can be supported so that the bending stress in the beam is within the allowable limit. -5. The wood beam has a rectangular cross-section in the proportion shown. Determine its required dimension b if the allowable bending stress is alow = 10 MPa. 500 N/m 1.5h 0.5 m 1 m 75 mm 150 mm 6-83. Determine the absolute maximum bending stress in the tubular shaft if d1 = 160 mm and d2 = 200 mm. 15 kN/m F6-18. If the beam is subjected to a bending moment of M = 10 kNm, determine the maximum bending stress in the beam. 60 kN·m 0 m 150 mm 100 mm m^2