The cross section of a steel beam is constructed of a W 18 x 71 wide-flange section with a 6 in x 1/2 in. cover plate welded to the top flange and a C 10 x 30 channel section welded to the bottom flange. This beam is subjected to a bending moment M having its vector at an angle θ to the z axis (see figure).
Determine the orientation of the neutral axis and calculate the maximum tensile stress σt and maximum compressive stress σc in the beam. Assume that θ = 30° and M = 75 k-in.

Transcribed Image Text:

Plate W 18 x 71 3 C 10 x 30