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Open Channel Calculation - Trapesoidal Design <br /> ssssssssssssss:ssss:sssssssss:sssssssssssssssssssssssssssssssssss:ss <br /> Project: HARNEY LANE LANDFILL <br /> DESCRIPTION: CLOSURE DRAINAGE CALCULATIONS <br /> CALLS. ARE BASED ON MANNINGB FORMULA <br /> Notes: CAPACITY OF V-DITCH 1 ' DEEP & 10' TOP <br /> n VALUE: 0.030 <br /> s (SLOPE) : 0.0030 <br /> a/c (RATIO TO 1 ) : 4.00 <br /> DEPTH: 1.25 Ft. <br /> BOTTOM WIDTH: 0.00 Ft. <br /> Top Widths 10.00 Ft. <br /> AML -------------------------------------------------------------------- <br /> rea: 6.25 S . Ft. <br /> Wetted Perimeter: 10.31 Ft. <br /> Hydraulic Radius: 0.6063 <br /> R' (2/3) : 0.7164 <br /> Velocity : 1.9435 fps <br /> Flow Quantity: 12.1472 cfe <br /> 31 <br />