Draw the load and moment diagrams corresponding to the given shear diagram (V rises 0 → 900 lb over 4 ft; constant to 6 ft; drops 900 lb at 6 ft; zero to 10 ft; drops to −900 lb at 10 ft; falls to −1380 lb at 14 ft; jumps to +480 lb at 14 ft; falls to 0 at 18 ft).