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Open Channel Calculation - "V" Design <br /> Project: FOOTHILL SANITARY LANDFILL <br /> DESCRIPTION: PRELIMINARY CLOSURE DRAINAGE CALCULATIONS <br /> CALCS. ARE BASED ON MANNINGS FORMULA <br /> Notes: CAPACITY OF A "V" DITCH 1/2 ' DEEP, 20' TOP <br /> n VALUE: 0. 030 <br /> s (SLOPE) : 0 . 0600 <br /> s/s (RATIO TO 1) : 20. 00 <br /> DEPTH: 0. 50 Ft. <br /> BOTTOM WIDTH: 0. 00 Ft. <br /> Top Width: 20. 00 Ft. <br /> -------------------------------------------------------------------- <br /> Area: 5. 00 Sq. Ft. <br /> Wetted Perimeter: 20. 02 Ft. <br /> Hydraulic Radius: 0.2497 <br /> R^ (2/3) : 0.3965 <br /> Velocity: 4 .8108 fps <br /> Flow Quantity: 24 . 0541 cfs <br /> Design for East Ditch, Top of Landfill (Area N) <br />