7. The structure shown in Fig. 7 is pinned at A, rests on a roller at D and carries a horizontal load W at C. Joint B is rigid. Evaluate the horizontal displacements at C and D, the vertical displacement at the midspan of BD and the rotation of joint B. C El constant throughout a a B A Fig. 7 W L 5. For the simply supported beam with overhangs loaded as shown in Fig. 5, calculate the displacements at A and E. Also sketch the BMD and the deflected shape, indicating clearly the curvatures and any points of contraflexure. EI = 4500 kN.m throughout. 12 kN 12 kN B A C 2 m 2 m 6 m Fig. 5 D E 2 m 6. For the simply supported beam loaded as shown in Fig. 6, evaluate Mo so that the vertical deflection at B is zero. Hence evaluate the slope at B. El is constant throughout. W Mo B C A L/2 L/2 Fig. 6