1. The beam loaded as presented below, has also a cross-section as shown below. You are required to determine the following: (20 pts.) (a). The reactions RAR and a (b). Draw the shear and the bending moment diagrams; (c). The centroidal distance and the moment of inertia; (d). The maximum normal stress using the flexure formula, f=where: f=the normal stress; M -the maximum moment; Y the distance from the bottom fiber to N.A.; and I-the section's moment of inertia. tw- 0.450" d= 18.35" 27 kips/it b= 7.590" 3'-0" BAY Figure 1 2(a). For the beam loaded as shown if Figure 2, solve for the reactions at A and B; (10 pts.) 344 Figure 2 2(b). Locate the centroidal x-axis for the beam cross section shown in Figure 3; (10 pts.) T 12.5 -0.441" -S 200 x 34 A-6.77 in Figure 3 W310 x 52 A = 10.3 In