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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 (l0yr-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 />----------------------------------------- <br />----------------------------------------- <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 <br />(cfs) (ft) <br />1.25 5.0 <br />Retardance Depth Velocity <br />Class (ft) (fps) <br />--------------------------------- <br />--------------------------------- <br />Stability B 0.42 0.47 <br />Capacity B 0.42 0.47 <br />w/ Freeboard + B 0.42 <br />2Left ZRight <br />--------------- <br />3.0:1 3.0:1 <br />Top Manning's <br />Width N <br />(ft) <br />Slope <br />(~) <br />4.0 <br />Hydraulic Froude <br />Radius Number <br />7.5 0.310 0.341 0.14 <br />7.5 0.310 0.341 0.14 <br />7.5 <br />u <br />• <br />Runoff Peak <br />volume Discharge <br />(ac-f t) <br />----------------- <br />------- <br />------- (cfs) <br />------------ <br />------------ <br />--- <br />IN/OUT 0.76 1.25 <br />******~t**********,t******t~***~**~***~~*~**********~~*~*************~***~~~***~ <br />• <br />7-6-3-13 <br />