Water flows in a new 20cm diameter, 300m long ductile iron pipe between reservoirs A and B, as shown in Figure P4.2.1. The pipe is elevated at S, which is 150m downstream from reservoir A. The water surface difference between the two reservoirs is 25 m. Determine the head that should be provided by a booster pump 100 m downstream from reservoir A if Δs is 3 m and the pressure head at that location must be kept above -6m because of cavitation concerns. Sketch the EGL and the HGL for the pipeline. friction factor f as 18

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Storm Sewers and Detention

The storm drains system transports rainwater or stormwater and other runoff from roads, parking lots, and roof downpipes directly to nearby creeks, rivers, or the sea without any treatment.