Laserfiche WebLink
SEDCAD 4.0 <br />r .:..n~ .uua c.....i. i c+.~...n <br />Reclamation Ditch Design Though Reclaimed B-Seam <br />Portal <br />Bottom Left Right Freeboard Freeboard Freeboard <br />Width (R) Sideslope Sideslope Slope (%) ° <br />- ~ - Mult x <br />Ratio Ratio ~ <br />~ of <br />p~ (ft) Depth (VxD) <br />4.00 1.5:1 1.5:1 35.0 1.00 <br />Simons/OSM Method -Steep Slope Design <br />• <br /> w/o Freeboard w/ Freeboard <br />Design Discharge: 17.05 ds <br />Depth: 0.14 ft 1.14 ft <br />Top Width: 4.43 R 7.43 R <br />velocity*: <br />X-Section Area: 0.61 sq ft <br />Hydraulic Radius: 0.135 <br />Froude Number: <br />Manning's n*: <br />Dmin: 6.00 in <br />D50: 18.00 in <br />Dmax: 22.50 in <br />velocity and Manning's n calculations may not appty for this method. <br />• <br />This design is for a post mining drainage channel that will be constructed in the ephemeral <br />channel after the B-Seam portal area is restored to approximate original contour. See Map 18 <br />Post Mining Contours. Two flow values were considered for the channel design. The first was <br />the flow rate for ditch B-6 (2.63 cfs) and the second was the 10-year flow event for Pond B <br />(17.05 cfs).- There was very little difference in the required channel configuration because of <br />the steep slope design method. Therefore, the channel will be designed using the ultra <br />conservative 17.05 cfs flow. The results are shown above. <br />The calculations and infci~c~t+gi7 p~es~~e~-i this page were prepared by me during the <br />month of April 2002, an~~iformation~~if2s~ited is true and correct to the best of my <br />knowledge and belief. ~*pl j~;?3 ~ ~~*~ ~ v <br />s.~,.St~~i+P. E. <br />legis RA~f~si5nal Engineer <br />State of Colorado No, 19230 <br />Material: Riprag <br />Trapezoids/ Channe/ <br />SEDCAD Utility Run <br />PR-07 ,A yPRovE~ <br />s ~+11a3 <br />ExhB - 190 - <br />Printetl 04-21-2003 <br />4/03 <br />