Answer Happy

Table 1 n Mean values of the Manning coefficient n for water flow in open channels From Chow (1959). Wall Material A. Artificially lined channels Glass Brass Steel, smooth Steel, painted Steel, riveted Cast iron Concrete, finished Concrete, unfinished Wood, planed Wood, unplaned Clay tile Brickwork Asphalt Corrugated metal Rubble masonry B. Excavated earth channels Clean Gravelly Weedy Stony, cobbles 0.010 0.011 0.012 0.014 0.015 0.013 0.012 0.014 0.012 0.013 0.014 0.015 0.016 0.022 0.025 0.022 0.025 0.030 0.035
Water is flowing in a wide rectangular brick open channel uniformly. The range of flow depth in the channel is classified as 'steep'. Prove that the statement is true. Given the slope of the channel S0 = tan0.4º and the roughness of the wetted surface of the channel are constant along the channel. Use the attached table to find your Manning's n value.