Solve Problem 4.4.4 using the Hazen-Williams equation instead of the Darcy-Weisbach for friction losses. Let CHw = 120 for the concrete pipes.
Problem 4.4.4
An industrial water-distribution system is schematically shown in Figure P4.4.4. The demands on the system are currently at junctions D (0.550 m3/sec) and E (0.450 m3/sec). Water enters the system at junction A from a storage tank (surface elevation of 355.0 m). All pipes are concrete (e = 0.36 mm) with lengths and diameters provided in the table below. In addition, the elevations of the junctions are given in the table below. Calculate the flow rate in each pipe (initial estimated flows are provided). Also determine if the pressure at each junction exceeds 185 kPa, a requirement of the water company by the industrial park.

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QA し2 L. Pipe Flow (mIsec Length ( meter (m) elD Junction Elev. (m) 0.45 0.45 0.40 0.40 0.20 0.20 355.0 315.5 313.8 313.3 314.1 AB AC 0.500 0.500 0.530 0470 0.030 0.020 300 300 0,00080 0.00080 0.00090 0.00090 0.00180 0.00180 CE СВ ED 400 300 300