A cantilever beam AB of length L = 6.5 ft supports a trapezoidal distributed load of peak intensity q, and minimum intensity q/2, that includes the weight of the beam (see figure). The beam is a steel W 12 x 14 wide-flange shape (see Table E-1(a), Appendix E).
Calculate the maximum permissible load q based upon (a) an allowable bending stress σallow x 18 ksi and (b) an allowable shear stress τallow = 7.5 ksi.

Transcribed Image Text:

4 W 12 x 14 L= 6.5 ft