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<br />SEDCAD 4 for Windows <br />Copynght 1998 Pamela J. Schwab <br />Civil Software Design <br />Structure Detai/; <br />Structure #2 (Silt Fence) <br />Silt Fence Inputs: <br />Fence Flow Width along land Slope Tie-back <br />Rate contour (R) Height (ft) (%) distance (R) <br />(gpm/sq R) <br />5.6 22.0 2.5 17.00 14.7 <br />*Sediment Storage: 0.00 ac-R <br />*Sediment capacity based on Average Annual R of7L0 for 1 year(s) <br />Silt Fence Results: <br />Peak Fence Stage: 2.45 R <br />Peak Water Sage: 1.76 ft <br />Dewater Time: 0.50 days <br />Trap Efficiency: 37.97 <br />Dewatering time is calculated from peak stage to lowest spit/way <br /> <br />• <br />Stage-Capacity-Discharge Table <br />Fence Stage <br /> <br />(R) Wa[er Stage <br /> <br />(ft) Area <br /> <br />(ac) fapacity <br /> <br />(ac-ft) Discharge <br /> <br />(c~) oewater <br />Time <br />(hrs) <br />0.00 0.000 0.000 <br />0.10 0.000 0.000 <br />0.20 0.001 0.000 <br />0.30 0.001 0.000 <br />0.40 0.001 0.000 <br />0.50 0.001 0.000 <br />0.69 0.00 0.002 0.000 0.000 Top of Sediment <br />0.79 0.10 0.000 0.000 0.028 0.10 <br />0.89 0.20 0.001 0.000 0.062 8.45 <br />0.99 0.30 0.001 0.000 0.103 1.95 <br />1.09 0.40 0.001 0.000 0.151 0.55 <br />1.19 0.50 0.001 0.000 0.206 0.45 <br />1.29 0.60 0.002 0.001 0.267 0.05 <br />1.39 0.70 0.002 0.001 0.336 0.40 <br />1.49 0.80 0.002 0.001 0.411 <br />1.59 0.90 0.003 0.001 0.493 0.05 <br />1.69 1.00 0.003 0.002 0.582 <br />1.79 1.10 0.003 0.002 0.677 <br />1.89 1.20 0.004 0.002 0.780 <br />Filename: drillpadSAERev3.sc4 <br />6 <br />Printed 03-06-2001 <br />