a) The steel composite section consists of a 400x10 mm thick steel plate which is placed on the top flange of a Universal Beam (UB) Section 2 (See Table 1). They are bolted together to form the composite section as shown below. The universal beam sectional properties are given in the table below. The modulus of elasticity for steel is 200 GPa. Steel plate (a) Section a-a (dimensions not to scale) Y (b) UB Section Figure 1 Table 1 Ixe lyo A dbf t Section tw (x106 (x106 mm mm mm mm mm mm4) mm4) 1 610UB125 16000 612 229 19.6 11.9 986 39.3 2 610UB113 3 14500 607 228 17.3 11.2 610UB101 13000 602 228 14.8 10.6 875 34.3 761 29.3 4 530UB92.4 11800 533 209 15.6 10.2 554 23.8 5 530UB82 10500 528 209 13.2 9.6 477 20.1 Determine the location of the centroid with respect to the point P; y = mm a) Determine the location of the centroid with respect to the point P; y = mm b) Determine the moment of inertia I., with respect to the centroidal axes. xx = x106 mm4