AW12 ( 14 wide-flange beam (see Table E-1(a), Appendix E) is simply supported with a span length of 120 in. (see figure). The beam supports two anti-symmetrically placed concentrated loads of 7.5 k each.
At a cross section located 20 in. from the right-hand support, determine the principal stresses (1 and (2 and the maximum shear stress tmax at each of the following locations: (a) the top of the beam, (b) the top of the web, and (c) the neutral axis.

Transcribed Image Text:

7.5 k 7.5 k W 12 x 14 20 in. 20 in 120 in.