ENGR 112 Mechanics of Materials Fall 2018 Dr. Eric V. Monzon E-020. Two axial members are used to support a load P applied at joint B. Member (1) has a cross- sectional area of 3,080 mm² and allowable normal stress of 180 MPa. Member (2) has a cross- sectional area of 4,650 mm² and allowable normal stress of 75 MPa. Determine the maximum load P that may be supported without exceeding either allowable normal stresses. 5.0 m 2.0 m B 4.3 m (2) (1) E-021. The rigid beam BC shown in the figure is supported by rods (1) and (2) that have diameters of 0.875 in, and 1.125 in., respectively. For a uniformly distributed load of w = 4,200 lb/ft,