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HomeMy WebLinkAboutSW3210701_Design Calculations (Veg. Conveyances)_20211214Project Name: Wicker Park Project Number: 2021210184 Channel Number: PD-1 I. FLOW CALCULATIONS Drainage Area = 2.29 acres SCS CN = 69 Rational C Tc = 5.00 min 12 = 6.74 in/hr 110 = 7.34 in/hr Q2 = 4.99 cfs Q10 = 6.39 cfs II. SWALE CALCULATIONS Proposed Channel Section ' MCADAMs PERMANENT CHANNEL DESIGN Date: Calculated By: 11/8/2021 SAB For newly graded areas, HSG'D' soils C=0.020x CN-1.0 Conservative assumption Calculated values are for the Raleigh -Durham area. For other areas, values will have to be input manually Longitudinal Slope 3.50% Left Sideslope H:V Right Sideslope = 3.00 H:V Maximum Vel. = 4.50 ft/s IFor established grass lined channel Bottom Width = 2.00 ft 10-Year Storm Calculations (for Permanent Liner) Match Manning's "n" to Calculated "n" and adjust Depth until Capacity matches Flow (Q10). Wetted Hydraulic Liner Description/ Velocity VR Flow (Q10) Manning's"n" Depth Flow Area Perimeter Radius Capacity Shear Stress Selection Calculate, [ft] [ft2] [ft] [ft] [ft/sec] [ftz/sec] [cfs] [cfs] [lb/ftA2] "n" 0.059 0.65 2.57 6.11 0.42 2.64 1.11 6.39 6.79 1.42 Tall Fescue 0.059 0.034 0.5 1.76 6.16 0.34 3.98 n/a 6.39 6.96 1.09 ERON ETP300 0.034 -------> NO PERMANENT LINER REQUIRED -------> VELOCITY IS OKAY -------> SHEAR STRESS IS OKAY Project Name: Wicker Park Project Number: 2021210184 Channel Number: PD-2 I. FLOW CALCULATIONS Drainage Area = 0.85 acres SCS CN = 72 Rational C Tc = 5.00 min 12 = 6.74 in/hr 110 = 7.34 in/hr Q2 = 2.16 cfs Q10 = 2.76 cfs II. SWALE CALCULATIONS Proposed Channel Section ' MCADAMs PERMANENT CHANNEL DESIGN Date: Calculated By: 11/8/2021 SAB For newly graded areas, HSG'D' soils C=0.020x CN-1.0 Conservative assumption Calculated values are for the Raleigh -Durham area. For other areas, values will have to be input manually Longitudinal Slope 4.40% Left Sideslope H:V Right Sideslope = 3.00 H:V Maximum Vel. = 4.50 ft/s IFor established grass lined channel Bottom Width = 0.50 ft 10-Year Storm Calculations (for Permanent Liner) Match Manning's "n" to Calculated "n" and adjust Depth until Capacity matches Flow (Q10). Wetted Hydraulic Liner Description/ Velocity VR Flow (Q10) Manning's"n" Depth Flow Area Perimeter Radius Capacity Shear Stress Selection Calculate, [ft] [ft2] [ft] [ft] [ft/sec] [ftz/sec] [Its] [cfs] [lb/ftA2] "n" 0.064 0.65 1.59 4.61 0.36 2.40 0.83 2.76 3.82 1.78 Tall Fescue 0.064 0.034 0.5 1.00 3.66 0.27 3.86 n/a 2.76 3.86 1.37 ERON ETP300 0.034 -------> NO PERMANENT LINER REQUIRED -------> VELOCITY IS OKAY -------> SHEAR STRESS IS OKAY Project Name: Wicker Park Project Number: 2021210184 Channel Number: PD-3 I. FLOW CALCULATIONS Drainage Area = 1.11 acres SCS CN = 69 Rational C Tc = 5.00 min 12 = 5.74 in/hr 110 = 7.34 in/hr Q2 = 2.42 cfs Q10 = 3.10 cfs II. SWALE CALCULATIONS Proposed Channel Section ' MCADAMs PERMANENT CHANNEL DESIGN Date: Calculated By: 11/8/2021 SAB For newly graded areas, HSG'D' soils C=0.020x CN-1.0 Conservative assumption Calculated values are for the Raleigh -Durham area. For other areas, values will have to be input manually Longitudinal Slope 5.10% Left Sideslope H:V Right Sideslope = 3.00 H:V Maximum Vel. = 4.50 ft/s IFor established grass lined channel Bottom Width = 0.50 ft 10-Year Storm Calculations (for Permanent Liner) Match Manning's "n" to Calculated "n" and adjust Depth until Capacity matches Flow (Q10). Wetted Hydraulic Liner Description/ Velocity VR Flow (Q10) Manning's"n" Depth Flow Area Perimeter Radius Capacity Shear Stress Selection Calculate, [ft] [ft2] [ft] [ft] [ft/sec] [ftz/sec] [cfs] [cfs] [lb/ftA2] "n" 0.068 0.6 1.38 4.29 0.32 2.32 0.74 3.10 3.19 1.91 Tall Fescue 0.068 0.034 0.5 1.00 3.66 0.27 4.15 n/a 3.10 4.15 1.S9 ERON ETP300 0.034 -------> NO PERMANENT LINER REQUIRED -------> VELOCITY IS OKAY -------> SHEAR STRESS IS OKAY Project Name: Wicker Park Project Number: 2021210184 Channel Number: PD-4 Drainage Area =M500 acres SCS CN = Rational C = Tc = min 12 = 6.74 in/hr 110 = 7.34 in/hr Q2 = 3.67 cfs Q10 = 4.70 cfs II. SWALE CALCULATIONS Proposed Channel Section ' MCADAMs PERMANENT CHANNEL DESIGN Date: Calculated By: 11/8/2021 SAB For newly graded areas, HSG'D' soils C=0.020x CN-1.0 Conservative assumption Calculated values are for the Raleigh -Durham area. For other areas, values will have to be input manually Longitudinal Slope 4.10% Left Sideslope H:V Right Sideslope = 3.00 H:V Maximum Vel. = 4.50 ft/s IFor established grass lined channel Bottom Width = 2.00 ft 10-Year Storm Calculations (for Permanent Liner) Match Manning's "n" to Calculated "n" and adjust Depth until Capacity matches Flow (Q10). Wetted Hydraulic Liner Description/ Velocity VR Flow (Q10) Manning's"n" Depth Flow Area Perimeter Radius Capacity Shear Stress Selection Calculate, [ft] [ft2] [ft] [ft] [ft/sec] [ftz/sec] [cfs] [cfs] [lb/ftA2] "n" 0.059 0.6 2.28 6.79 0.39 2.14 1.08 4.70 6.24 1.54 Tall Fescue 0.059 0.034 0.5 1.76 6.16 0.34 4.30 n/a 4.70 7.53 1.28 ERON ET P300 1 0.034 -------> NO PERMANENT LINER REQUIRED -------> VELOCITY IS OKAY -------> SHEAR STRESS IS OKAY Project Name: Wicker Park Project Number: 2021210184 Channel Number: PD-4 Drainage Area =M500 acres SCS CN = Rational C = Tc = min 12 = 6.74 in/hr 110 = 7.34 in/hr Q2 = 1.46 cfs Q10 = 1.87 cfs II. SWALE CALCULATIONS Proposed Channel Section ' MCADAMs PERMANENT CHANNEL DESIGN Date: Calculated By: 11/8/2021 SAB For newly graded areas, HSG'D' soils C=0.020x CN-1.0 Conservative assumption Calculated values are for the Raleigh -Durham area. For other areas, values will have to be input manually Longitudinal Slope 3.82% Left Sideslope H:V Right Sideslope = 3.00 H:V Maximum Vel. = 4.50 ft/s IFor established grass lined channel Bottom Width = 1.50 ft 10-Year Storm Calculations (for Permanent Liner) Match Manning's "n" to Calculated "n" and adjust Depth until Capacity matches Flow (Q10). Wetted Hydraulic Liner Description/ Velocity VR Flow (Q10) Manning's"n" Depth Flow Area Perimeter Radius Capacity Shear Stress Selection Calculate, [ft] [ft2] [ft] [ft] [ft/sec] [ftz/sec] [cfs] [cfs] [lb/ftA2] "n" 0.073 0.5 1.11 4.66 0.32 1.87 0.60 1.87 2.80 1.19 Tall Fescue 0.073 0.034 0.5 1.600.32 4.01 n/a 1.87 6.02 1.19 ERON ETP300 0.034 -------> NO PERMANENT LINER REQUIRED -------> VELOCITY IS OKAY -------> SHEAR STRESS IS OKAY Project Name: Wicker Park Project Number: 2021210184 Channel Number: PD-6 I. FLOW CALCULATIONS Drainage Area = 0.70 acres SCS CN = 76 Rational C Tc = 5.00 min 12 = 5.74 in/hr 110 = 7.34 in/hr Q2 = 2.09 cfs Q10 = 2.67 cfs II. SWALE CALCULATIONS Proposed Channel Section ' MCADAMs PERMANENT CHANNEL DESIGN Date: Calculated By: 11/8/2021 SAB For newly graded areas, HSG'D' soils C=0.020x CN-1.0 Conservative assumption Calculated values are for the Raleigh -Durham area. For other areas, values will have to be input manually Longitudinal Slope 1.40% Left Sideslope H:V Right Sideslope = 3.00 H:V Maximum Vel. = 4.50 ft/s IFor established grass lined channel Bottom Width = 1.00 ft 10-Year Storm Calculations (for Permanent Liner) Match Manning's "n" to Calculated "n" and adjust Depth until Capacity matches Flow (Q10). Wetted Hydraulic Liner Description/ Velocity VR Flow (Q10) Manning's"n" Depth Flow Area Perimeter Radius Capacity Shear Stress Selection Calculate, [ft] [ft2] [ft] [ft] [ft/sec] [ftz/sec] [cfs] [cfs] [lb/ftA2] "n" 0.073 0.8 2.72 6.06 0.45 1.41 0.63 2.67 3.84 0.70 Tall Fescue 0.073 0.034 0.5 1.25 4.16 0.30 2.32 n/a 2.67 2.90 0.44 ERON ET P300 1 0.034 -------> NO PERMANENT LINER REQUIRED -------> VELOCITY IS OKAY -------> SHEAR STRESS IS OKAY Project Name: Wicker Park Project Number: 2021210184 Channel Number: PD-7 I. FLOW CALCULATIONS Drainage Area = 0.45 acres SCS CN = 79 Rational C Tc = 5.00 min 12 = 6.74 in/hr 110 = 7.34 in/hr Q2 = 1.47 cfs Q10 = 1.88 cfs II. SWALE CALCULATIONS Proposed Channel Section ' MCADAMs PERMANENT CHANNEL DESIGN Date: Calculated By: 11/8/2021 SAB For newly graded areas, HSG'D' soils C=0.020x CN-1.0 Conservative assumption Calculated values are for the Raleigh -Durham area. For other areas, values will have to be input manually Longitudinal Slope 2.86% Left Sideslope H:V Right Sideslope = 3.00 H:V Maximum Vel. = 4.50 ft/s IFor established grass lined channel Bottom Width = 0.50 ft 10-Year Storm Calculations (for Permanent Liner) Match Manning's "n" to Calculated "n" and adjust Depth until Capacity matches Flow (Q10). Wetted Hydraulic Liner Description/ Velocity VR Flow (Q10) Manning's"n" Depth Flow Area Perimeter Radius Capacity Shear Stress Selection Calculate, [ft] [ft2] [ft] [ft] [ft/sec] [ftz/sec] [cfs] [cfs] [lb/ftA2] "n" 0.068 0.7 1.82 4.93 0.37 1.90 J. 1.88 3.46 1.26 Tall Fescue 0.068 0.034 0.5 1.00 :16 0.27 3.11 n/a 1.88 3.11 0.89 ERON ETP300 0.034 -------> NO PERMANENT LINER REQUIRED -------> VELOCITY IS OKAY -------> SHEAR STRESS IS OKAY Project Name: Wicker Park Project Number: 2021210184 Channel Number: PD-8 I. FLOW CALCULATIONS Drainage Area =M500 acres SCS CN = Rational C = Tc = min 12 = 6.74 in/hr 110 = 7.34 in/hr Q2 = 2.32 cfs Q10 = 2.97 cfs II. SWALE CALCULATIONS Proposed Channel Section ' MCADAMs PERMANENT CHANNEL DESIGN Date: Calculated By: 11/8/2021 SAB For newly graded areas, HSG'D' soils C=0.020x CN-1.0 Conservative assumption Calculated values are for the Raleigh -Durham area. For other areas, values will have to be input manually Longitudinal Slope 1.96% Left Sideslope H:V Right Sideslope = 3.00 H:V Maximum Vel. = 4.50 ft/s IFor established grass lined channel Bottom Width = 1.00 ft 10-Year Storm Calculations (for Permanent Liner) Match Manning's "n" to Calculated "n" and adjust Depth until Capacity matches Flow (Q10). Wetted Hydraulic Liner Description/ Velocity VR Flow (Q10) Manning's"n" Depth Flow Area Perimeter Radius Capacity Shear Stress Selection Calculate, [ft] [ft2] [ft] [ft] [ft/sec] [ftz/sec] [Its] [cfs] [lb/ftA2] "n" 0.073 0.7 2.17 6.43 0.40 1.56 0.62 2.97 3.36 0.86 Tall Fescue 0.073 0.034 0.5 1.26 4.16 0.30 2.74 n/a 2.97 3.43 0.61 ERON ETP300 0.034 -------> NO PERMANENT LINER REQUIRED -------> VELOCITY IS OKAY -------> SHEAR STRESS IS OKAY Project Name: Wicker Park Project Number: 2021210194 Channel Number: PD-9 I. FLOW CALCULATIONS Drainage Area = 0.94 acres SCS CN = 76 Rational C Tc = 5.00 min 12 = 5.74 in/hr 110 = 7.34 in/hr Q2 = 2.75 cfs Q10 = 3.52 cfs II. SWALE CALCULATIONS Proposed Channel Section ' MCADAMs PERMANENT CHANNEL DESIGN Date: Calculated By: 11/8/2021 SAB For newly graded areas, HSG'D' soils C=0.020x CN-1.0 Conservative assumption Calculated values are for the Raleigh -Durham area. For other areas, values will have to be input manually Longitudinal Slope 3.03% Left Sideslope H:V Right Sideslope = 3.00 H:V Maximum Vel. = 4.50 ft/s IFor established grass lined channel Bottom Width = 1.00 ft 10-Year Storm Calculations (for Permanent Liner) Match Manning's "n" to Calculated "n" and adjust Depth until Capacity matches Flow (Q10). Wetted Hydraulic Liner Description/ Velocity VR Flow (Q10) Manning's"n" Depth Flow Area Perimeter Radius Capacity Shear Stress Selection Calculate, [ft] [ft2] [ft] [ft] [ft/sec] [ftz/sec] [Its] [cfs] [lb/ftA2] "n" 0.064 0.7 2.17 5.43 0.40 2.19 0.88 3.52 4.76 1.32 Tall Fescue 0.064 0.034 0.5 1.25 4.16 0.30 3.41 n/a 3.52 4.26 0.95 ERON ETP300 0.034 -------> NO PERMANENT LINER REQUIRED -------> VELOCITY IS OKAY -------> SHEAR STRESS IS OKAY Project Name: Wicker Park Project Number: 2021210194 Channel Number: PD-9 I. FLOW CALCULATIONS Drainage Area = 0.48 acres SCS CN = 76 Rational C Tc = 5.00 min 12 = 5.74 in/hr 110 = 7.34 in/hr Q2 = 1.41 cfs Q10 = 1.80 cfs II. SWALE CALCULATIONS Proposed Channel Section ' MCADAMs PERMANENT CHANNEL DESIGN Date: Calculated By: 11/8/2021 SAB For newly graded areas, HSG'D' soils C=0.020x CN-1.0 Conservative assumption Calculated values are for the Raleigh -Durham area. For other areas, values will have to be input manually Longitudinal Slope 2.76% Left Sideslope H:V Right Sideslope = 3.00 H:V Maximum Vel. = 4.50 ft/s IFor established grass lined channel Bottom Width = 1.00 ft 10-Year Storm Calculations (for Permanent Liner) Match Manning's "n" to Calculated "n" and adjust Depth until Capacity matches Flow (Q10). Wetted Hydraulic Liner Description/ Velocity VR Flow (Q10) Manning's"n" Depth Flow Area Perimeter Radius Capacity Shear Stress Selection Calculate, [ft] [ft2] [ft] [ft] [ft/sec] [ftz/sec] [cfs] [cfs] [lb/ftA2] "n" 0.010 0.6 1.11 4.79 0.35 1.53 0.54 1.80 2.58 1.03 Tall Fescue 0.080 0.034 0.5 1.25 4.16 0.30 3.26 n/a 1.80 4.07 0.86 ERON ETP300 0.034 -------> NO PERMANENT LINER REQUIRED -------> VELOCITY IS OKAY -------> SHEAR STRESS IS OKAY Project Name: Wicker Park Project Number: 2021210184 Channel Number: PD-11 I. FLOW CALCULATIONS Drainage Area = 0.73 acres SCS CN = 88 Rational C Tc = 5.00 min 12 = 5.74 in/hr 110 = 7.34 in/hr Q2 = 3.18 cfs Q10 = 4.07 cfs II. SWALE CALCULATIONS Proposed Channel Section ' MCADAMs PERMANENT CHANNEL DESIGN Date: Calculated By: 11/8/2021 SAB For newly graded areas, HSG'D' soils C=0.020x CN-1.0 Conservative assumption Calculated values are for the Raleigh -Durham area. For other areas, values will have to be input manually Longitudinal Slope 1.36% Left Sideslope H:V Right Sideslope = 3.00 H:V Maximum Vel. = 4.50 ft/s IFor established grass lined channel Bottom Width = 1.00 ft 10-Year Storm Calculations (for Permanent Liner) Match Manning's "n" to Calculated "n" and adjust Depth until Capacity matches Flow (Q10). Wetted Hydraulic Liner Description/ Velocity VR Flow (Q10) Manning's"n" Depth Flow Area Perimeter Radius Capacity Shear Stress Selection Calculate, [ft] [ft2] [ft] [ft] [ft/sec] [ftz/sec] [cfs] [cfs] [lb/ftA2] "n" 0.068 0.9 3.33 6.69 0.50 1.60 0.80 4.07 5.33 0.76 Tall Fescue 0.068 0.034 0.5 1.25 4.16 0.30 2.29 n/a 4.07 2.86 0.42 ERON ETP300 0.034 -------> NO PERMANENT LINER REQUIRED -------> VELOCITY IS OKAY -------> SHEAR STRESS IS OKAY Project Name: Wicker Park Project Number: 2021210184 Channel Number: PD-12 I. FLOW CALCULATIONS Drainage Area = 1.94 acres SCS CN = 88 Rational C Tc = 5.00 min 12 = 5.74 in/hr 110 = 7.34 in/hr Q2 = 8.46 cfs Q10 = 10.82 cfs II. SWALE CALCULATIONS Proposed Channel Section ' MCADAMs PERMANENT CHANNEL DESIGN Date: Calculated By: 11/8/2021 SAB For newly graded areas, HSG'D' soils C=0.020x CN-1.0 Conservative assumption Calculated values are for the Raleigh -Durham area. For other areas, values will have to be input manually Longitudinal Slope 1.13% Left Sideslope H:V Right Sideslope = 3.00 H:V Maximum Vel. = 4.50 ft/s IFor established grass lined channel Bottom Width = 3.00 ft 10-Year Storm Calculations (for Permanent Liner) Match Manning's "n" to Calculated "n" and adjust Depth until Capacity matches Flow (Q10). Wetted Hydraulic Liner Description/ Velocity VR Flow (Q10) Manning's"n" Depth Flow Area Perimeter Radius Capacity Shear Stress Selection Calculate, [ft] [ft2] [ft] [ft] [ft/sec] [ftz/sec] [cfs] [cfs] [lb/ftA2] "n" 0.059 1 6.00 9.32 0.64 2.00 1.28 10.82 11.97 0.71 Tall Fescue 0.059 0.034 0.5 2.25 6.16 0.37 2.37 n/a 10.82 5.34 0.35 ERON ET P300 0.034 -------> NO PERMANENT LINER REQUIRED -------> VELOCITY IS OKAY -------> SHEAR STRESS IS OKAY Project Name: Wicker Park Project Number: 2021210184 Channel Number: PD-13 I. FLOW CALCULATIONS Drainage Area = 1.40 acres SCS CN = 70 Rational C Tc = 5.00 min 12 = 5.74 in/hr 110 = 7.34 in/hr Q2 = 3.21 cfs Q10 = 4.11 cfs II. SWALE CALCULATIONS Proposed Channel Section ' MCADAMs PERMANENT CHANNEL DESIGN Date: Calculated By: 11/8/2021 SAB For newly graded areas, HSG'D' soils C=0.020x CN-1.0 Conservative assumption Calculated values are for the Raleigh -Durham area. For other areas, values will have to be input manually Longitudinal Slope 1.00% Left Sideslope H:V Right Sideslope = 3.00 H:V Maximum Vel. = 4.50 ft/s IFor established grass lined channel Bottom Width = 1.00 ft 10-Year Storm Calculations (for Permanent Liner) Match Manning's "n" to Calculated "n" and adjust Depth until Capacity matches Flow (Q10). Wetted Hydraulic Liner Description/ Velocity VR Flow (Q10) Manning's"n" Depth Flow Area Perimeter Radius Capacity Shear Stress Selection Calculate, [ft] [ft2] [ft] [ft] [ft/sec] [ftz/sec] [Its] [cfs] [lb/ftA2] "n" 0.073 0.9 3.33 6.69 0.50 1.28 0.64 4.11 4.26 0.56 Tall Fescue 0.073 0.034 0.5 1.25 4.16 0.30 1.96 n/a 4.11 2.45 0.1, ERON ETP300 0.034 -------> NO PERMANENT LINER REQUIRED -------> VELOCITY IS OKAY -------> SHEAR STRESS IS OKAY Project Name: Wicker Park Project Number: 2021210184 Channel Number: PD-14 Drainage Area =M500 acres SCS CN = Rational C = Tc = min 12 = 6.74 in/hr 110 = 7.34 in/hr Q2 = 1.08 cfs Q10 = 1.38 cfs II. SWALE CALCULATIONS Proposed Channel Section ' MCADAMs PERMANENT CHANNEL DESIGN Date: Calculated By: 11/8/2021 SAB For newly graded areas, HSG'D' soils C=0.020x CN-1.0 Conservative assumption Calculated values are for the Raleigh -Durham area. For other areas, values will have to be input manually Longitudinal Slope 2.00% Left Sideslope H:V Right Sideslope = 3.00 H:V Maximum Vel. = 4.50 ft/s IFor established grass lined channel Bottom Width = 0.50 ft 10-Year Storm Calculations (for Permanent Liner) Match Manning's "n" to Calculated "n" and adjust Depth until Capacity matches Flow (Q10). Wetted Hydraulic Liner Description/ Velocity VR Flow (Q10) Manning's"n" Depth Flow Area Perimeter Radius Capacity Shear Stress Selection Calculate, [ft] [ft2] [ft] [ft] [ft/sec] [ftz/sec] [cfs] [cfs] [lb/ftA2] "n" 0.068 0.8 2.32 6.66 0.42 1.73 0.72 1.38 4.00 1.00 Tall Fescue 0.068 0.034 0.5 1.00 3.66 0.27 2.60 n/a 1.38 2.60 0.62 ERON ETP300 0.034 -------> NO PERMANENT LINER REQUIRED -------> VELOCITY IS OKAY -------> SHEAR STRESS IS OKAY