Orange County NC Website
Browse       Search
50 <br /> TR55 Tc Worksheet <br /> Hydraflow Hydrographs Extension for AutoCAD®Civil 3D8 2011 by Autodesk, Inc.v8 <br /> Hyd. No. 2 <br /> Remaining Basin <br /> Description A B C Totals <br /> Sheet Flow <br /> Manning's n-value = 0.400 0.011 0.011 <br /> Flow length (ft) = 100.0 0.0 0.0 <br /> Two-year 24-hr precip. (in) = 3.60 0.00 0.00 <br /> Land slope (%) = 4.00 0.00 0.00 <br /> Travel Time (min) = 15.34 + 0.00 + 0.00 = 15.34 <br /> Shallow Concentrated Flow <br /> Flow length (ft) = 983.00 0.00 0.00 <br /> Watercourse slope (%) = 3.76 0.00 0.00 <br /> Surface description = Unpaved Paved Paved <br /> Average velocity (ft/s) =3.13 0.00 0.00 <br /> Travel Time (min) = 5.24 + 0.00 + 0.00 = 5.24 <br /> Channel Flow <br /> X sectional flow area (sqft) = 3.14 18.00 36.00 <br /> Wetted perimeter(ft) = 6.28 12.00 17.00 <br /> Channel slope (%) = 1.45 1.08 0.91 <br /> Manning's n-value = 0.015 0.050 0.050 <br /> Velocity (ft/s) =7.52 <br /> 4.06 <br /> 4.70 <br /> Flow length (ft) ({0})1660.0 2038.0 219.0 <br /> Travel Time (min) = 3.68 + 8.36 + 0.78 = 12.82 <br /> Total Travel Time, Tc 33.40 min <br />