Beer & Johnston — Stress and Strain—Axial Loading: Problem 2.131

2.131 The steel rods $BE$ and $CD$ each have a 16-mm diameter ($E = 200 \text{ GPa}$); the ends of the rods are single-threaded with a pitch of 2.5 mm. Knowing that after being snugly fitted, the nut at $C$ is tightened one full turn, determine (a) the tension in rod $CD$, (b) the deflection of point $C$ of the rigid member $ABC$.