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Civil Software Design -- SEDCAD+ Version 3.1 <br />Copyright (C) 1987 -1992. Pamela J. Schwab. All rights reserved. <br />• Company Name: Peabody Coal Company <br />Filename: C: \SEDCAD3 \SEN2 \BYDITCHI User: TJW <br />Date: 11 -18 -1992 Time: 11:24:25 <br />BONE YARD DITCH (10yr -24hr Precip Event) <br />Storm: 1.60 inches, 10 year -24 hour, SCS Type II <br />Hydrograph Convolution Interval: 0.1 hr <br />NON -POND STRUCTURE INPUT /OUTPUT TABLE <br />J1, B1, S1 <br />DITCH DESIGN <br />Drainage Area from J1, B1, S1, SWS(s)1: 894.0 acres <br />Total Contributing Drainage Area: 894.0 acres <br />MATERIAL: TALL FESCUE <br />Trapezoidal Vegetated Channel <br />Limiting Variable: Velocity = 7.000 fps <br />Design Bottom <br />Discharge Width ZLeft ZRight Slope <br />(cfs) (ft) (_%) <br />1.25 5.0 3.0:1 3.0:1 4.0 <br />L J <br />Retardance <br />Depth <br />Class <br />(ft) <br />Stability B <br />0.42 <br />Capacity B <br />0.42 <br />w/ Freeboard + B <br />0.42 <br />Runoff Peak <br />Volume Discharge <br />(ac -ft) (cfs) <br />iI T <br />IN /OUT 0.76 1.25 <br />7- 6 -3 -13 All, <br />Top <br />Manning's <br />Hydraulic <br />Froude <br />Velocity <br />Width <br />N <br />Radius <br />Number <br />(fps) <br />(ft) <br />0.47 <br />7.5 <br />0.310 <br />0.341 <br />0.14 <br />0.47 <br />7.5 <br />0.310 <br />0.341 <br />0.14 <br />7.5 <br />Runoff Peak <br />Volume Discharge <br />(ac -ft) (cfs) <br />iI T <br />IN /OUT 0.76 1.25 <br />7- 6 -3 -13 All, <br />