Problem 5: Energy Grade Line (EGL) and Hydraulic Grade Line (HGL) A small pipe discharges into a big pipe as sketched below. The head loss per length for the small pipe is 0.5 ft head per 1.0 ft length, or høL = 0.5. The head loss in the big pipe is negligible. There is 1.0 ft of head loss associated with the transition from the small pipe to the big pipe. Which of the following sketches most accurately describes the hydraulic grade line (HGL), shown dashed, and the energy grade line (EGL), shown solid? Choose (a)-(d), re-sketch, and explain your choice.

Fig: 1

Fig: 2

Fig: 3