5.40 The beam carries a concentrated load W and a uniformly distributed load that totals 4W. Determine the largest allowable value of W if the working stresses are 60 MPa in tension and 100 MPa in compression. A W B 4W (total) 2 m 4 m I-75 x 106 mm² 84 mm ΝΑ D 116 mm FIG. P5.40