The 150-mm pipeline shown below conducts water from the reservoir and discharges at a lower elevation through a nozzle with a discharge diameter of 50 mm. The water surface in reservoir 1 is at an elevation of 30 m, the pipe intake 2 and 3 at an elevation of 25 m, and the nozzle 4 and 5 at elevation 0. The head losses are: from 1 to 2, 0; from 2 to 3, 0.6 m; from 3 to 4, 9 m; from 4 to 5, 3 m. Compute the pressure head at point 4 in m.

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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.