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HomeMy WebLinkAbout16 Civil Engineering Report App C Bioswale CalculationsProposed SituationLand Use CommercialArea 1.18 AcresSlope1 %C=0.90Overland Flow Distance 300 ftTime of Concentration6minPercent Impervious100%Runoff Treatment Volume 2035 cf(RTV) 0.0467 acre-ftRunoff Treatment Flow Rate0.438 cfs(RTF)Curve Number 98(NRCS Runoff Curve Number)Q =0.475 in (runoff depth in watershed inches)Ia =0.041 in (initial abstraction)Ia/P =0.082 inqu =500cfs/mi2/inch (TR-55 Exhibit 4-1)Normal Depth 2.9 in (@ RTF)Bottom Width 5.54 ftDesign Velocity 0.27 ft/sec (@ RTF)Length 146 ftBASIN ABIOFILTRATION SWALE SIZINGL:\193190\Computations\ON-SITE STORM.xls Proposed SituationLand Use CommercialArea 0.83 AcresSlope1 %C=0.90Overland Flow Distance 260 ftTime of Concentration6minPercent Impervious100%Runoff Treatment Volume 1431 cf(RTV) 0.0329 acre-ftRunoff Treatment Flow Rate0.308 cfs(RTF)Curve Number 98(NRCS Runoff Curve Number)Q =0.475 in (runoff depth in watershed inches)Ia =0.041 in (initial abstraction)Ia/P =0.082 inqu =500cfs/mi2/inch (TR-55 Exhibit 4-1)Normal Depth 2.4 in (@ RTF)Bottom Width 5.44 ftDesign Velocity 0.24 ft/sec (@ RTF)Length 130 ftBASIN BBIOFILTRATION SWALE SIZINGL:\193190\Computations\ON-SITE STORM.xls Proposed SituationLand Use CommercialArea 1.19 AcresSlope1 %C=0.90Overland Flow Distance 300 ftTime of Concentration6minPercent Impervious100%Runoff Treatment Volume 2052 cf(RTV) 0.0471 acre-ftRunoff Treatment Flow Rate0.442 cfs(RTF)Curve Number 98(NRCS Runoff Curve Number)Q =0.475 in (runoff depth in watershed inches)Ia =0.041 in (initial abstraction)Ia/P =0.082 inqu =500cfs/mi2/inch (TR-55 Exhibit 4-1)Normal Depth 2.9 in (@ RTF)Bottom Width 5.60 ftDesign Velocity 0.27 ft/sec (@ RTF)Length 146 ftBASIN CBIOFILTRATION SWALE SIZINGL:\193190\Computations\ON-SITE STORM.xls Basin A - Bioswale Project Description Manning FormulaFriction Method Normal DepthSolve For Input Data 0.200Roughness Coefficient ft/ft0.010Channel Slope H:V3.000Left Side Slope H:V3.000Right Side Slope ft6.00Bottom Width cfs0.44Discharge Results in2.9Normal Depth ft²1.6Flow Area ft7.5Wetted Perimeter in2.6Hydraulic Radius ft7.46Top Width in0.7Critical Depth ft/ft1.556Critical Slope ft/s0.27Velocity ft0.00Velocity Head ft0.24Specific Energy 0.101Froude Number SubcriticalFlow Type GVF Input Data in0.0Downstream Depth ft0.0Length 0Number Of Steps GVF Output Data in0.0Upstream Depth N/AProfile Description ft0.00Profile Headloss ft/sInfinityDownstream Velocity ft/sInfinityUpstream Velocity in2.9Normal Depth in0.7Critical Depth ft/ft0.010Channel Slope ft/ft1.556Critical Slope Page 1 of 127 Siemon Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666 11/3/2022 FlowMaster [10.02.00.01] Bentley Systems, Inc. Haestad Methods Solution CenterUntitled1.fm8 Basin B - Bioswale Project Description Manning FormulaFriction Method Normal DepthSolve For Input Data 0.200Roughness Coefficient ft/ft0.010Channel Slope H:V3.000Left Side Slope H:V3.000Right Side Slope ft6.00Bottom Width cfs0.31Discharge Results in2.4Normal Depth ft²1.3Flow Area ft7.3Wetted Perimeter in2.2Hydraulic Radius ft7.19Top Width in0.5Critical Depth ft/ft1.677Critical Slope ft/s0.24Velocity ft0.00Velocity Head ft0.20Specific Energy 0.098Froude Number SubcriticalFlow Type GVF Input Data in0.0Downstream Depth ft0.0Length 0Number Of Steps GVF Output Data in0.0Upstream Depth N/AProfile Description ft0.00Profile Headloss ft/s0.00Downstream Velocity ft/s0.00Upstream Velocity in2.4Normal Depth in0.5Critical Depth ft/ft0.010Channel Slope ft/ft1.677Critical Slope Page 1 of 127 Siemon Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666 11/3/2022 FlowMaster [10.02.00.01] Bentley Systems, Inc. Haestad Methods Solution CenterUntitled1.fm8 Basin C - Bioswale Project Description Manning FormulaFriction Method Normal DepthSolve For Input Data 0.200Roughness Coefficient ft/ft0.010Channel Slope H:V3.000Left Side Slope H:V3.000Right Side Slope ft6.00Bottom Width cfs0.44Discharge Results in2.9Normal Depth ft²1.6Flow Area ft7.5Wetted Perimeter in2.6Hydraulic Radius ft7.46Top Width in0.7Critical Depth ft/ft1.556Critical Slope ft/s0.27Velocity ft0.00Velocity Head ft0.24Specific Energy 0.101Froude Number SubcriticalFlow Type GVF Input Data in0.0Downstream Depth ft0.0Length 0Number Of Steps GVF Output Data in0.0Upstream Depth N/AProfile Description ft0.00Profile Headloss ft/s0.00Downstream Velocity ft/s0.00Upstream Velocity in2.9Normal Depth in0.7Critical Depth ft/ft0.010Channel Slope ft/ft1.556Critical Slope Page 1 of 127 Siemon Company Drive Suite 200 W Watertown, CT 06795 USA +1-203-755-1666 11/3/2022 FlowMaster [10.02.00.01] Bentley Systems, Inc. Haestad Methods Solution CenterUntitled1.fm8