A weight W = 18 kN falls through a height h = 15 mm onto the midpoint of a simple beam of length L = 3 m (see figure). Assuming that the allowable bending stress in the beam is  = 125 MPa allow and E...

A weight W = 18 kN falls through a height h = 15 mm onto the midpoint of a simple beam of length L = 3 m (see figure).

Assuming that the allowable bending stress in the beam is
 = 125 MPa allow and E = 210 GPa, select the lightest wide-flange beam listed in Table F-1 in Appendix F that will be satisfactory