고체역학 (Beer) — Shearing Stresses in Beams: Problem 6.14

6.13 Two steel plates of \( 12 \times 200\)-mm rectangular cross section are welded to the W310 \(\times\) 52 beam as shown. Determine the largest allowable vertical shear if the shearing stress in the beam is not to exceed 90 MPa. 6.14 Solve Prob. 6.13 assuming that the two steel plates are (a) replaced by \( 8 \times 200\)-mm plates, (b) removed.