CE444-APPLIED HYDRAULICS
FALL 2009
SECOND MIDTERM
NOVEMBER 16, 2009, 0730-0845

Name: ______________________ Red ID __________________ Grade: _________

Instructions: Closed book, closed notes. Use engineering paper. When you are finished, staple your work in sequence (1 to 4), and return this sheet with your work.

  1. (25%) Calculate the discharge Q (cfs) for an asphalted cast-iron pipe of diameter D = 10 in and head loss per unit of length hf/L = 0.008. The water temperature is 65oF.

  2. (25%) Using an explicit equation, calculate the pipe diameter D (m) for the following conditions: Q = 0.075 m3/s, head loss per unit of length hf/L = = 0.008, pipe roughness ks = 0.00012 m, and water temperature T = 18oC.

  3. (25%) Determine the diameter of a pipe to conduct a Q = 2.5 m3/s between two reservoirs A and B. Reservoir A is at elevation 520 m, and reservoir B at elevation 390 m. The distance between the reservoirs is 4200 m. Neglect all minor losses. Assume f = 0.015 and T = 20oC.

  4. (25%) What is the change in head (of water) for a 0.7-m diameter orifice in a 1-m diameter pipe carrying a discharge of 2 m3/s of water? Assume T = 20oC.