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SEDCAD 4.0 <br />Rnrnminh4 1 OOR P~mch 1 Crh..nh <br />• <br />Table 4.2-13 Culvert & Ditch Sizing Calcuations - <br />Collector Ditch Steep Section 15% <br />Material: Riprap <br />Trapezoids/ Channel <br />Bottom i_eft ', Right Freeboard Freeboard freeboard <br />Sideslope Sideslope Slope'.(%) <br />Width (ft) Ratio ' Ratio Mult. x <br />,Depth (ft) °/d of Depth <br /> (VxD) <br />2.00 1.5:1 1.5:1 15.0 1.35 <br />Simons/OSM Method -Steep Slope Design <br />• <br /> w/o„Freeboard w/ Freeboard <br />Design Discharge: 4.60 cfs <br />Depth: 0.15 ft 1.50 ft <br />Top Width: 2.44 ft 6.49 ft <br />velocity*: <br />X-Section Area: 0.33 sq ft <br />Hydraulic Radius: 0.129 <br />Froude Number*: <br />Manning's n*: <br />Dmin: 4.00 in <br />D50: 12.00 in <br />Dmax: 15.00 in <br />Velocity and Manning's n calculations may not apply for this method. <br />Plate collector ditch diversion with 12" riprap to a point immediately southeast of the <br />topsoil stockpile, a length of approximately 240 feet. <br />o°~'® ~~G j'~~ <br />7'®©0@Otlejg9~a~ ~~ <br />6 ~ €°C ~t.L~'V-moo ~ <br />Q ®~ 9 ~.r's'?4'4 °'1~ 8 <br />}~ ® 0 8'v' <br />~~ ~e tl ~ ~l d~9 ~~~ <br />® °4 , ~~ ~ 4 <br />~~~trF~~l ~-'p® <br />~4amav <br />• <br />SEDCAD Utility Run Printed 11-28-2007 <br />Mc Vol I - MR-44 Page 3 11/07 <br />