Laserfiche WebLink
Civil Software Design -- SEDCAD+ Version 3.1 <br />Copyright (C) 1987-1992. Pamela J. Schwab. All rights reserved. <br />Company Name: COLOWYO COAL COMPANY <br />Filename: C:\SEDCAD3\SEC11100 User: JUAN GARCIA <br />Date: 10-18-1995 Time: 10:11:56 <br />SECTION 11 POST MINING RIPRAP DRAINAGE DESIGN <br />Storm: 2.80 inches, 100 year-24 hour, SCS Type II <br />Hydrograph Convolution Interval: 0.1 hr <br />----------------------------------------- <br />----------------------------------------- <br />NON-POND STRUCTURE INPUT/OUTPUT TABLE <br />J1, B1, S1 <br />SECTION 11 DITCH <br />Drainage Area from J1, B1, S1, SWS(s)1: 36.8 acres <br />Total Contributing Drainage Area: 36.8 acres <br />MATERIAL: Rock Riprap <br />Trapezoidal Riprap Channel <br />Steep Slope Design - PARER Method <br />Design Bottom Manning's <br />Discharge Width ZLeft ZRight Slope n <br />7.23 12.0 2.0:1 2.0:1 19.6 0.047 <br />Top Hydraulic Froude <br />Depth Velocity Width Radius Number <br />(ft) (fps) (ft) <br />----------------------------------------------- <br />----------------------------------------------- <br />0:15 3.90 12.6 0.146 1.79 <br />w/ Freeboard: 0.45 13.8 <br />----DMax---- ----D50---- ----D10---- <br />(ft) (in) (ft) (in) (ft) (in) <br />------------------------------------------ <br />------------------------------------------ <br />0.16 1.88 0.13 1.50 0.04 0.50 <br />Runoff Peak <br />Volume Discharge <br />(ac-ft) (cfs) <br />----------------------------- <br />----------------------------- <br />IN/OUT 1.08 7.23 <br />C~ <br />