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Home My WebLink About13-MM Culvert and Ditch CalculationsProject Description Worksheet Circular Channel- MM-C-1 Flow Element Circular Channel Method Manning's Formula Solve For Channel Depth Input Data Mannings Coefficient 0.024 Slope 0.020000 ft/ft Diameter 18 in Discharge 2.29 cfs Results Depth 0.55 ft Flow Area 0.6 ftz Wetted Perimeter 1.95 ft Top Width 1.44 ft Critical Depth 0.57 ft Percent Full 36.5 % Critical Slope 0.017021 ft/ft Velocity 3.92 ft/s Velocity Head 0.24 ft Specific Energy 0.79 ft Froude Number 1.09 Maximum Discharge 8.66 cfs Discharge Full 8.05 cfs Slope Full 0.001620 ft/ft Flow Type Supercritical 18 in 0.55 ft V:1 H:1 NTS Project Description Worksheet Circular Channel - MM-C-2 Flow Element Circular Channel Method Manning's Formula Solve For Channel Depth Input Data Mannings Coefficient 0.024 Slope 0.020000 ft/ft Diameter 18 in Discharge 0.66 cfs Results Depth 0.29 ft Flow Area 0.2 ft2 Wetted Perimeter 1.37 ft Top Width 1.19 ft Critical Depth 0.30 ft Percent Full 19.4 % Critical Slope 0.017196 ft/ft Velocity 2.75 ft/s Velocity Head 0.12 ft Specific Energy 0.41 ft Froude Number 1.08 Maximum Discharge 8.66 cfs Discharge Full 8.05 cfs Slope Full 0.000135 ft/ft Flow Type Supercritical 18 in 0.29 ft v:1 N H:1 NTS Project Description Worksheet Circular Channel - MM-C-3 Flow Element Circular Channel Method Manning's Formula Solve For Channel Depth Input Data Mannings Coefficient 0.024 Slope 0.020000 ft/ft Diameter 18 in Discharge 5.15 cfs Results Depth 0.87 ft Flow Area 1.1 ft2 Wetted Perimeter 2.60 ft Top Width 1.48 ft Critical Depth 0.87 ft Percent Full 58.2 % Critical Slope 0.019884 ft/ft Velocity 4.83 ft/s Velocity Head 0.36 ft Specific Energy 1.23 ft Froude Number 1.00 Maximum Discharge 8.66 cfs Discharge Full 8.05 cfs Slope Full 0.008193 ft/ft Flow Type Supercritical 18 in 0.87 ft v:1 N H:1 NTS Project Description Worksheet Circular Channel - MM-C-4 Flow Element Circular Channel Method Manning's Formula Solve For Channel Depth Input Data Mannings Coefficient 0.024 Slope 0.020000 ft/ft Diameter 24 in Discharge 9.53 cfs Results Depth 1.06 ft Flow Area 1.7 ft2 Wetted Perimeter 3.26 ft Top Width 2.00 ft Critical Depth 1.10 ft Percent Full 52.9 % Critical Slope 0.017457 ft/ft Velocity 5.65 ft/s Velocity Head 0.50 ft Specific Energy 1.55 ft Froude Number 1.08 Maximum Discharge 18.64 cfs Discharge Full 17.33 cfs Slope Full 0.006049 ft/ft Flow Type Supercritical VAN HA NTS Project Description Worksheet Circular Channel-MM-C-4A Flow Element Circular Channel Method Manning's Formula Solve For Channel Depth Input Data Mannings Coefficient 0.024 Slope 0.020000 ft/ft Diameter 18 in Discharge 0.67 cfs Results Depth 0.29 ft Flow Area 0.2 ft2 Wetted Perimeter 1.37 ft Top Width 1.19 ft Critical Depth 0.30 ft Percent Full 19.5 % Critical Slope 0.017175 ft/ft Velocity 2.76 ft/s Velocity Head 0.12 ft Specific Energy 0.41 ft Froude Number 1.08 Maximum Discharge 8.66 cfs Discharge Full 8.05 cfs Slope Full 0.000139 ft/ft Flow Type Supercritical 18 in 0.29 ft v:1 N H:1 NTS Project Description Worksheet Circular Channel - MM-C-5 Flow Element Circular Channel Method Manning's Formula Solve For Channel Depth Input Data Mannings Coefficient 0.024 Slope 0.020000 ft/ft Diameter 18 in Discharge 0.89 cfs Results Depth 0.34 ft Flow Area 0.3 ftz Wetted Perimeter 1.48 ft Top Width 1.25 ft Critical Depth 0.35 ft Percent Full 22.5 % Critical Slope 0.016885 ft/ft Velocity 3.00 ft/s Velocity Head 0.14 ft Specific Energy 0.48 ft Froude Number 1.09 Maximum Discharge 8.66 cfs Discharge Full 8.05 cfs Slope Full 0.000245 ft/ft Flow Type Supercritical 18 in J 0.34 ft v:1 N H:1 NTS Project Description Worksheet Circular Channel - MM-C-6 Flow Element Circular Channel Method Manning's Formula Solve For Channel Depth Input Data Mannings Coefficient 0.024 Slope 0.020000 ft/ft Diameter 18 in Discharge 0.84 cfs Results Depth 0.33 ft Flow Area 0.3 ft2 Wetted Perimeter 1.46 ft Top Width 1.24 ft Critical Depth 0.34 ft Percent Full 21.8 % Critical Slope 0.016907 ft/ft Velocity 2.95 ft/s Velocity Head 0.14 ft Specific Energy 0.46 ft Froude Number 1.08 Maximum Discharge 8.66 cfs Discharge Full 8.05 cfs Slope Full 0.000218 ft/ft Flow Type Supercritical 18 in 0.33 ft V:1 H:1 NTS Project Description Worksheet Circular Channel - MM-C-7 Flow Element Circular Channel Method Manning's Formula Solve For Channel Depth Input Data Mannings Coefficient 0.024 Slope 0.020000 ft/ft Diameter 18 in Discharge 0.65 cfs Results Depth 0.29 ft Flow Area 0.2 ft2 Wetted Perimeter 1.36 ft Top Width 1.18 ft Critical Depth 0.30 ft Percent Full 19.2 % Critical Slope 0.017239 ft/ft Velocity 2.73 ft/s Velocity Head 0.12 ft Specific Energy 0.40 ft Froude Number 1.08 Maximum Discharge 8.66 cfs Discharge Full 8.05 cfs Slope Full 0.000131 ft/ft Flow Type Supercritical 18 in 0.29 ft V:1 N HA NITS Project Description Worksheet Circular Channel - MM-C-8 Flow Element Circular Channel Method Manning's Formula Solve For Channel Depth Input Data Mannings Coefficient 0.024 Slope 0.020000 ft/ft Diameter 18 in Discharge 0.71 cfs Results Depth 0.30 ft Flow Area 0.3 ft2 Wetted Perimeter 1.39 ft Top Width 1.20 ft Critical Depth 0.31 ft Percent Full 20.1 % Critical Slope 0.017059 ft/ft Velocity 2.81 ft/s Velocity Head 0.12 ft Specific Energy 0.42 ft Froude Number 1.08 Maximum Discharge 8.66 cfs Discharge Full 8.05 cfs Slope Full 0.000156 ft/ft Flow Type Supercritical 18 in 0.30 ft V:1 HA NTS Project Description Worksheet Circular Channel - MM-C-9 Flow Element Circular Channel Method Manning's Formula Solve For Channel Depth Input Data Mannings Coefficient 0.024 Slope 0.020000 ft/ft Diameter 18 in Discharge 3.75 cfs Results Depth 0.72 ft Flow Area 0.8 ftz Wetted Perimeter 2.30 ft Top Width 1.50 ft Critical Depth 0.74 ft Percent Full 48.0 % Critical Slope 0.018179 ft/ft Velocity 4.47 ft/s Velocity Head 0.31 ft Specific Energy 1.03 ft Froude Number 1.05 Maximum Discharge 8.66 cfs Discharge Full 8.05 cfs Slope Full 0.004344 ft/ft Flow Type Supercritical 18 in ft V:1 N HA NITS Project Description Worksheet Circular Channel - MM-C-10 Flow Element Circular Channel Method Manning's Formula Solve For Channel Depth Input Data Mannings Coefficient 0.024 Slope 0.020000 ft/ft Diameter 18 in Discharge 0.39 cfs Results Depth 0.22 ft Flow Area 0.2 ftz Wetted Perimeter 1.19 ft Top Width 1.07 ft Critical Depth 0.23 ft Percent Full 15.0 % Critical Slope 0.017923 ft/ft Velocity 2.35 ft/s Velocity Head 0.09 ft Specific Energy 0.31 ft Froude Number 1.05 Maximum Discharge 8.66 cfs Discharge Full 8.05 cfs Slope Full 0.000047 ft/ft Flow Type Supercritical 18 in 0.22 ft V:1 N H:1 NTS Project Description Worksheet Circular Channel - MM-C-11 Flow Element Circular Channel Method Manning's Formula Solve For Channel Depth Input Data Mannings Coefficient 0.024 Slope 0.020000 ft/ft Diameter 18 in Discharge 0.89 cfs Results Depth 0.34 ft Flow Area 0.3 ft2 Wetted Perimeter 1.48 ft Top Width 1.25 ft Critical Depth 0.35 ft Percent Full 22.5 % Critical Slope 0.016885 ft/ft Velocity 3.00 ft/s Velocity Head 0.14 ft Specific Energy 0.48 ft Froude Number 1.09 Maximum Discharge 8.66 cfs Discharge Full 8.05 cfs Slope Full 0.000245 ft/ft Flow Type Supercritical 18 in J 0.34 ft v:1 N H:1 NTS Project Description Worksheet Circular Channel - MM-C-12 Flow Element Circular Channel Method Manning's Formula Solve For Channel Depth Input Data Mannings Coefficient 0.024 Slope 0.020000 ft/ft Diameter 18 in Discharge 0.47 cfs Results Depth 0.25 ft Flow Area 0.2 ft2 Wetted Perimeter 1.25 ft Top Width 1.11 ft Critical Depth 0.25 ft Percent Full 16.4 % Critical Slope 0.017636 ft/ft Velocity 2.49 ft/s Velocity Head 0.10 ft Specific Energy 0.34 ft Froude Number 1.06 Maximum Discharge 8.66 cfs Discharge Full 8.05 cfs Slope Full 0.000068 ft/ft Flow Type Supercritical 18 in 0.25 ft v:1 N H:1 NTS Project Description Worksheet Circular Channel - MM-C-13 Flow Element Circular Channel Method Manning's Formula Solve For Channel Depth Input Data Mannings Coefficient 0.024 Slope 0.020000 ft/ft Diameter 18 in Discharge 0.93 cfs Results Depth 0.34 ft Flow Area 0.3 ftz Wetted Perimeter 1.50 ft Top Width 1.26 ft Critical Depth 0.36 ft Percent Full 23.0 % Critical Slope 0.016870 ft/ft Velocity 3.04 ft/s Velocity Head 0.14 ft Specific Energy 0.49 ft Froude Number 1.09 Maximum Discharge 8.66 cfs Discharge Full 8.05 cfs Slope Full 0.000267 ft/ft Flow Type Supercritical 18 in 0.34 ft V:1 H:1 NTS Project Description Worksheet Trapezoidal Channel - MM-D-1 Flow Element Trapezoidal Channel Method Manning's Formula Solve For Channel Depth Input Data Mannings Coefficient 0.020 Slope 0.129000 ft/ft Left Side Slope 0.50 V : H Right Side Slope 0.50 V : H Bottom Width 2.00 ft Discharge 2.29 cfs Results Depth 0.15 ft Flow Area 0.3 ft2 Wetted Perimeter 2.66 ft Top Width 2.59 ft Critical Depth 0.31 ft Critical Slope 0.009816 ft/ft Velocity 6.76 ft/s Velocity Head 0.71 ft Specific Energy 0.86 ft Froude Number 3.29 Flow Type Supercritical Velocity too High - Lining Required, Try: Straw w/net, 2-year storm event Project Description Worksheet Trapezoidal Channel - MM-D-1 Flow Element Trapezoidal Channel Method Manning's Formula Solve For Channel Depth Input Data Mannings Coefficient 0.165 Slope 0.129000 ft/ft Left Side Slope 0.50 V : H Right Side Slope 0.50 V : H Bottom Width 2.00 ft Discharge 1.47 cfs Results Depth 0.38 ft Flow Area 1.1 ft2 Wetted Perimeter 3.70 ft Top Width 3.52 ft Critical Depth 0.24 ft Critical Slope 0.715259 ft/ft Velocity 1.40 ft/s Velocity Head 0.03 ft Specific Energy 0.41 ft Froude Number 0.45 Flow Type Subcritical Determine shear stress: T = 62.4 X 0.38 X 0.129=3.06lb/ft2 Permissible shear stress 1.45lb/ft2 Shear Stress to High, Try Rip Rap Lining Project Description Worksheet Trapezoidal Channel - MM-D-1 Flow Element Trapezoidal Channel Method Manning's Formula Solve For Channel Depth Input Data Mannings Coefficient 0.104 Slope 0.129000 ft/ft Left Side Slope 0.50 V : H Right Side Slope 0.50 V : H Bottom Width 2.00 ft Discharge 2.29 cfs Results Depth 0.38 ft Flow Area 1.0 ft2 Wetted Perimeter 3.69 ft Top Width 3.51 ft Critical Depth 0.31 ft Critical Slope 0.265418 ft/ft Velocity 2.21 ft/s Velocity Head 0.08 ft Specific Energy 0.45 ft Froude Number 0.71 Flow Type Subcritical Determine shear stress: T = 62.4 X 0.38 XO.129=3.06 Ib/ft2 Permissible shear stress 4.Olb/ft2 Rip Rap Lining OK 0.3 ft 2.00 ft�- VA N H 2.0 NTS Project Description Worksheet Flow Element Method Solve For Trapezoidal Channel - MM-D-2 Trapezoidal Channel Manning's Formula Channel Depth Input Data Mannings Coefficient 0.020 Slope 0.038000 ft/ft Left Side Slope 0.50 V : H Right Side Slope 0.50 V : H Bottom Width 2.00 ft Discharge 0.66 cfs Results Depth 0.10 ft Flow Area 0.2 ft2 Wetted Perimeter 2.46 ft Top Width 2.41 ft Critical Depth 0.14 ft Critical Slope 0.012004 ft/ft Velocity 2.94 ft/s Velocity Head 0.13 ft Specific Energy 0.24 ft Froude Number 1.70 Flow Type Supercritical Velocity too High - Lining Required, Try: Straw w/net, 2-year storm event Project Description Worksheet Trapezoidal Channel - MM-D-2 Flow Element Trapezoidal Channel Method Manning's Formula Solve For Channel Depth Input Data Mannings Coefficient 0.065 Slope 0.038000 ft/ft Left Side Slope 0.50 V : H Right Side Slope 0.50 V : H Bottom Width 2.00 ft Discharge 0.43 cfs Results Depth 0.16 ft Flow Area 0.4 ft2 Wetted Perimeter 2.71 ft Top Width 2.63 ft Critical Depth 0.11 ft Critical Slope 0.136855 ft/ft Velocity 1.17 ft/s Velocity Head 0.02 ft Specific Energy 0.18 ft Froude Number 0.56 Flow Type Subcritical Determine shear stress: T = 62.4 X 0.16 X 0.038=0.38lb/ft2 Permissible shear stress 1.45lb/ft2 Temporary Straw lining OK VR = 1.17 X (0.4/2.71) = 0.17 Manning's (Curve D, Fig. 805c) = 0.145 Project Description Worksheet Trapezoidal Channel - MM-D-2 Flow Element Trapezoidal Channel Method Manning's Formula Solve For Channel Depth Input Data Mannings Coefficient 0.145 Slope 0.038000 ft/ft Left Side Slope 0.50 V : H Right Side Slope 0.50 V : H Bottom Width 2.00 ft Discharge 0.66 cfs Results Depth Flow Area Wetted Perimeter Top Width Critical Depth Critical Slope Velocity Velocity Head Specific Energy Froude Number Flow Type Tall Fescue permissible velocity = 4.5 0.32 ft 0.8 ft2 3.43 ft 3.28 ft 0.14 ft 0.630957 ft/ft 0.78 ft/s 0.01 ft 0.33 ft 0.27 Subcritical (slopes 0-5%) Velocity of 0.78ft/s is OK 0. ft 2.00 ft� VA N H 2.0 NTS Project Description Worksheet Trapezoidal Channel - MM-D-3 Flow Element Trapezoidal Channel Method Manning's Formula Solve For Channel Depth Input Data Mannings Coefficient 0.020 Slope 0.125000 ft/ft Left Side Slope 0.50 V : H Right Side Slope 0.50 V : H Bottom Width 2.00 ft Discharge 5.15 cfs Results Depth 0.24 ft Flow Area 0.6 ft2 Wetted Perimeter 3.06 ft Top Width 2.95 ft Critical Depth 0.50 ft Critical Slope 0.008739 ft/ft Velocity 8.75 ft/s Velocity Head 1.19 ft Specific Energy 1.43 ft Froude Number 3.45 Flow Type Supercritical Velocity too High - Lining Required, Try: Straw w/net, 2-year storm event Project Description Worksheet Trapezoidal Channel - MM-D-3 Flow Element Trapezoidal Channel Method Manning's Formula Solve For Channel Depth Input Data Mannings Coefficient 0.065 Slope 0.125000 ft/ft Left Side Slope 0.50 V : H Right Side Slope 0.50 V : H Bottom Width 2.00 ft Discharge 3.32 cfs Results Depth 0.36 ft Flow Area 1.0 ftz Wetted Perimeter 3.61 ft Top Width 3.44 ft Critical Depth 0.38 ft Critical Slope 0.098181 ft/ft Velocity 3.39 ft/s Velocity Head 0.18 ft Specific Energy 0.54 ft Froude Number 1.12 Flow Type Supercritical Determine shear stress: T = 62.4 X 0.36 X 0.125=2.811b/ft2 Permissible shear stress 1.45lb/ft2 Shear Stress to High, Try Rip Rap Lining Project Description Worksheet Trapezoidal Channel - MM-D-3 Flow Element Trapezoidal Channel Method Manning's Formula Solve For Channel Depth Input Data Mannings Coefficient 0.104 Slope 0.125000 ft/ft Left Side Slope 0.50 V : H Right Side Slope 0.50 V : H Bottom Width 3.00 ft Discharge 5.15 cfs Results Depth 0.49 ft Flow Area 2.0 ft2 Wetted Perimeter 5.20 ft Top Width 4.96 ft Critical Depth 0.41 ft Critical Slope 0.239117 ft/ft Velocity 2.63 ft/s Velocity Head 0.11 ft Specific Energy 0.60 ft Froude Number 0.74 Flow Type Subcritical Determine shear stress: T = 62.4 X 0.49 XO.125= 3.82lb/ft2 Permissible shear stress 4.Olb/ft2 0. ft �3.00 ft� VA N H :2.0 NTS Project Description Worksheet Trapezoidal Channel - MM-D-4 Flow Element Trapezoidal Channel Method Manning's Formula Solve For Channel Depth Input Data Mannings Coefficient 0.020 Slope 0.030000 ft/ft Left Side Slope 0.50 V : H Right Side Slope 0.50 V : H Bottom Width 2.00 ft Discharge 5.04 cfs Results Depth 0.35 ft Flow Area 0.9 ftz Wetted Perimeter 3.57 ft Top Width 3.40 ft Critical Depth 0.49 ft Critical Slope 0.008765 ft/ft Velocity 5.32 ft/s Velocity Head 0.44 ft Specific Energy 0.79 ft Froude Number 1.78 Flow Type Supercritical Velocity too High - Lining Required, Try: Straw w/net, 2-year storm event Project Description Worksheet Trapezoidal Channel - MM-D-4 Flow Element Trapezoidal Channel Method Manning's Formula Solve For Channel Depth Input Data Mannings Coefficient 0.065 Slope 0.030000 ft/ft Left Side Slope 0.50 V : H Right Side Slope 0.50 V : H Bottom Width 2.00 ft Discharge 3.25 cfs Results Depth 0.52 ft Flow Area 1.6 ft2 Wetted Perimeter 4.34 ft Top Width 4.10 ft Critical Depth 0.38 ft Critical Slope 0.098483 ft/ft Velocity 2.03 ft/s Velocity Head 0.06 ft Specific Energy 0.59 ft Froude Number 0.57 Flow Type Subcritical Determine shear stress: T = 62.4 X 0.52 X 0.03=0.97lb/ft2 Permissible shear stress 1.45lb/ft2 Temporary Straw lining OK VR = 2.03 (1.6/4.34) = 0.37 Manning's (Curve D, Fig. 805c) = 0.095 Project Description Worksheet Trapezoidal Channel - MM-D-4 Flow Element Trapezoidal Channel Method Manning's Formula Solve For Channel Depth Input Data Mannings Coefficient 0.095 Slope 0.030000 ft/ft Left Side Slope 0.50 V : H Right Side Slope 0.50 V : H Bottom Width 2.00 ft Discharge 5.04 cfs Results Depth 0.80 ft Flow Area 2.9 ft2 Wetted Perimeter 5.58 ft Top Width 5.21 ft Critical Depth 0.49 ft Critical Slope 0.197762 ft/ft Velocity 1.75 ft/s Velocity Head 0.05 ft Specific Energy 0.85 ft Froude Number 0.41 Flow Type Subcritical Tall Fescue permissible velocity = 4.5 (slopes 0-5%) Velocity of 1.75ft/s is OK 0.80 ft �2.00 ft� VA N H :2.0 NTS Project Description Worksheet Trapezoidal Channel - MM-D-5 Flow Element Trapezoidal Channel Method Manning's Formula Solve For Channel Depth Input Data Mannings Coefficient 0.020 Slope 0.020000 ft/ft Left Side Slope 0.50 V : H Right Side Slope 0.50 V : H Bottom Width 2.00 ft Discharge 1.13 cfs Results Depth 0.17 ft Flow Area 0.4 ftz Wetted Perimeter 2.75 ft Top Width 2.67 ft Critical Depth 0.20 ft Critical Slope 0.010963 ft/ft Velocity 2.87 ft/s Velocity Head 0.13 ft Specific Energy 0.30 ft Froude Number 1.32 Flow Type Supercritical Velocity too High - Lining Required, Try: Straw w/net, 2-year storm event Project Description Worksheet Trapezoidal Channel - MM-D-5 Flow Element Trapezoidal Channel Method Manning's Formula Solve For Channel Depth Input Data Mannings Coefficient 0.065 Slope 0.020000 ft/ft Left Side Slope 0.50 V : H Right Side Slope 0.50 V : H Bottom Width 2.00 ft Discharge 0.73 cfs Results Depth 0.26 ft Flow Area 0.6 ft2 Wetted Perimeter 3.15 ft Top Width 3.03 ft Critical Depth 0.15 ft Critical Slope 0.124602 ft/ft Velocity 1.13 ft/s Velocity Head 0.02 ft Specific Energy 0.28 ft Froude Number 0.43 Flow Type Subcritical Determine shear stress: T = 62.4 X 0.26 X 0.02=0.32lb/ft2 Permissible shear stress 1.45lb/ft2 Temporary Straw lining OK VR = 1.13 X (0.6/3.15) = 0.22 Manning's (Curve D, Fig. 805c) = 0.131 Project Description Worksheet Trapezoidal Channel - MM-D-5 Flow Element Trapezoidal Channel Method Manning's Formula Solve For Channel Depth Input Data Mannings Coefficient 0.131 Slope 0.020000 ft/ft Left Side Slope 0.50 V : H Right Side Slope 0.50 V : H Bottom Width 2.00 ft Discharge 1.13 cfs Results Depth 0.48 ft Flow Area 1.4 ft2 Wetted Perimeter 4.16 ft Top Width 3.93 ft Critical Depth 0.20 ft Critical Slope 0.470327 ft/ft Velocity 0.79 ft/s Velocity Head 0.01 ft Specific Energy 0.49 ft Froude Number 0.23 Flow Type Subcritical Tall Fescue permissible velocity = 4.5 (slopes 0-5%) Velocity of 0.79ft/s is OK OA8 ft 2.00 ft� VAN H :2.0 NTS Project Description Worksheet Trapezoidal Channel - MM-D-6 Flow Element Trapezoidal Channel Method Manning's Formula Solve For Channel Depth Input Data Mannings Coefficient 0.020 Slope 0.180000 ft/ft Left Side Slope 0.50 V : H Right Side Slope 0.50 V : H Bottom Width 2.00 ft Discharge 0.66 cfs Results Depth 0.06 ft Flow Area 0.1 ft2 Wetted Perimeter 2.29 ft Top Width 2.26 ft Critical Depth 0.14 ft Critical Slope 0.012004 ft/ft Velocity 4.82 ft/s Velocity Head 0.36 ft Specific Energy 0.43 ft Froude Number 3.45 Flow Type Supercritical Velocity too High - Lining Required, Try: Straw w/net, 2-year storm event Project Description Worksheet Trapezoidal Channel - MM-D-6 Flow Element Trapezoidal Channel Method Manning's Formula Solve For Channel Depth Input Data Mannings Coefficient 0.065 Slope 0.180000 ft/ft Left Side Slope 0.50 V : H Right Side Slope 0.50 V : H Bottom Width 2.00 ft Discharge 0.43 cfs Results Depth 0.10 ft Flow Area 0.2 ftz Wetted Perimeter 2.45 ft Top Width 2.40 ft Critical Depth 0.11 ft Critical Slope 0.136856 ft/ft Velocity 1.95 ft/s Velocity Head 0.06 ft Specific Energy 0.16 ft Froude Number 1.13 Flow Type Supercritical Determine shear stress: T = 62.4 X 0.10 X 0.18=1.12lb/ft2 Permissible shear stress 1.45lb/ft2 Temporary Straw lining OK VR = 1.95 X (0.2/2.45) = 0.16 Manning's (Curve D, Fig. 805c) = 0.15 Project Description Worksheet Trapezoidal Channel - MM-D- 6 Flow Element Trapezoidal Channel Method Manning's Formula Solve For Channel Depth Input Data Mannings Coefficient 0.150 Slope 0.180000 ft/ft Left Side Slope 0.50 V : H Right Side Slope 0.50 V : H Bottom Width 2.00 ft Discharge 0.66 cfs Results Depth 0.21 ft Flow Area 0.5 ft2 Wetted Perimeter 2.94 ft Top Width 2.84 ft Critical Depth 0.14 ft Critical Slope 0.675250 ft/ft Velocity 1.30 ft/s Velocity Head 0.03 ft Specific Energy 0.24 ft Froude Number 0.54 Flow Type Subcritical Tall Fescue permissible velocity = 4.5 (slopes 0-5%) Velocity of 1.30ft/s is OK 0.20 ft 2.00 ft V:1N H :2.0 NTS Project Description Worksheet Trapezoidal Channel - MM-D-7 Flow Element Trapezoidal Channel Method Manning's Formula Solve For Channel Depth Input Data Mannings Coefficient 0.020 Slope 0.100000 ft/ft Left Side Slope 0.50 V : H Right Side Slope 0.50 V : H Bottom Width 2.00 ft Discharge 0.89 cfs Results Depth 0.09 ft Flow Area 0.2 ft2 Wetted Perimeter 2.41 ft Top Width 2.37 ft Critical Depth 0.17 ft Critical Slope 0.011405 ft/ft Velocity 4.46 ft/s Velocity Head 0.31 ft Specific Energy 0.40 ft Froude Number 2.71 Flow Type Supercritical Velocity too High - Lining Required, Try: Straw w/net, 2-year storm event Project Description Worksheet Trapezoidal Channel - MM-D-7 Flow Element Trapezoidal Channel Method Manning's Formula Solve For Channel Depth Input Data Mannings Coefficient 0.065 Slope 0.100000 ft/ft Left Side Slope 0.50 V : H Right Side Slope 0.50 V : H Bottom Width 2.00 ft Discharge 0.57 cfs Results Depth 0.14 ft Flow Area 0.3 ftz Wetted Perimeter 2.63 ft Top Width 2.56 ft Critical Depth 0.13 ft Critical Slope 0.130097 ft/ft Velocity 1.78 ft/s Velocity Head 0.05 ft Specific Energy 0.19 ft Froude Number 0.89 Flow Type Subcritical Determine shear stress: T = 62.4 X 0.14 X 0.1=0.87lb/ft2 Permissible shear stress 1.45lb/ft2 Temporary Straw lining OK VR = 1.78 X (0.3/2.63) = 0.11 Manning's (Curve D, Fig. 805c) = 0.19 Project Description Worksheet Trapezoidal Channel - MM-D-7 Flow Element Trapezoidal Channel Method Manning's Formula Solve For Channel Depth Input Data Mannings Coefficient 0.190 Slope 0.100000 ft/ft Left Side Slope 0.50 V : H Right Side Slope 0.50 V : H Bottom Width 2.00 ft Discharge 0.89 cfs Results Depth Flow Area Wetted Perimeter Top Width Critical Depth Critical Slope Velocity Velocity Head Specific Energy Froude Number Flow Type Tall Fescue permissible velocity = 4.5 0.33 ft 0.9 ft2 3.50 ft 3.34 ft 0.17 ft 1.029314 ft/ft 1.00 ft/s 0.02 ft 0.35 ft 0.34 Subcritical (slopes 0-5%) Velocity of 1ft/s is OK ------------- 0. ft 2.00 f� V:1� H :2.0 NTS Project Description Worksheet Trapezoidal Channel - MM-D-8 Flow Element Trapezoidal Channel Method Manning's Formula Solve For Channel Depth Input Data Mannings Coefficient 0.020 Slope 0.140000 ft/ft Left Side Slope 0.50 V : H Right Side Slope 0.50 V : H Bottom Width 2.00 ft Discharge 0.84 cfs Results Depth 0.08 ft Flow Area 0.2 ft2 Wetted Perimeter 2.36 ft Top Width 2.32 ft Critical Depth 0.17 ft Critical Slope 0.011517 ft/ft Velocity 4.87 ft/s Velocity Head 0.37 ft Specific Energy 0.45 ft Froude Number 3.14 Flow Type Supercritical Velocity too High - Lining Required, Try: Straw w/net, 2-year storm event Project Description Worksheet Trapezoidal Channel - MM-D-8 Flow Element Trapezoidal Channel Method Manning's Formula Solve For Channel Depth Input Data Mannings Coefficient 0.065 Slope 0.140000 ft/ft Left Side Slope 0.50 V : H Right Side Slope 0.50 V : H Bottom Width 2.00 ft Discharge 0.54 cfs Results Depth 0.12 ft Flow Area 0.3 ftz Wetted Perimeter 2.55 ft Top Width 2.49 ft Critical Depth 0.13 ft Critical Slope 0.131349 ft/ft Velocity 1.95 ft/s Velocity Head 0.06 ft Specific Energy 0.18 ft Froude Number 1.03 Flow Type Supercritical Determine shear stress: T = 62.4 X 0.12 X 0.14=0.1.04lb/ftz Permissible shear stress 1.45lb/ft2 Temporary Straw lining OK VR = 1.95 X (0.3/2.55) = 0.23 Manning's (Curve D, Fig. 805c) = 0.129 Project Description Worksheet Trapezoidal Channel - MM-D-8 Flow Element Trapezoidal Channel Method Manning's Formula Solve For Channel Depth Input Data Mannings Coefficient 0.129 Slope 0.140000 ft/ft Left Side Slope 0.50 V : H Right Side Slope 0.50 V : H Bottom Width 2.00 ft Discharge 0.84 cfs Results Depth Flow Area Wetted Perimeter Top Width Critical Depth Critical Slope Velocity Velocity Head Specific Energy Froude Number Flow Type Tall Fescue permissible velocity = 4.5 0.24 ft 0.6 ft2 3.06 ft 2.95 ft 0.17 ft 0.479129 ft/ft 1.43 ft/s 0.03 ft 0.27 ft 0.57 Subcritical (slopes 0-5%) Velocity of 1.43ft/s is OK 0.214 ft 2.00 ft-----� V:1 H :2.0 NTS Project Description Worksheet Trapezoidal Channel - MM-D-BA Flow Element Trapezoidal Channel Method Manning's Formula Solve For Channel Depth Input Data Mannings Coefficient 0.020 Slope 0.130000 ft/ft Left Side Slope 0.50 V : H Right Side Slope 0.50 V : H Bottom Width 2.00 ft Discharge 0.65 cfs Results Depth 0.07 ft Flow Area 0.2 ft2 Wetted Perimeter 2.31 ft Top Width 2.28 ft Critical Depth 0.14 ft Critical Slope 0.012036 ft/ft Velocity 4.33 ft/s Velocity Head 0.29 ft Specific Energy 0.36 ft Froude Number 2.97 Flow Type Supercritical Velocity too High - Lining Required, Try: Straw w/net, 2-year storm event Project Description Worksheet Trapezoidal Channel - MM-D-BA Flow Element Trapezoidal Channel Method Manning's Formula Solve For Channel Depth Input Data Mannings Coefficient 0.015 Slope 0.130000 ft/ft Left Side Slope 0.50 V : H Right Side Slope 0.50 V : H Bottom Width 2.00 ft Discharge 0.42 cfs Results Depth 0.05 ft Flow Area 0.1 ft2 Wetted Perimeter 2.20 ft Top Width 2.18 ft Critical Depth 0.11 ft Critical Slope 0.007319 ft/ft Velocity 4.40 ft/s Velocity Head 0.30 ft Specific Energy 0.35 ft Froude Number 3.71 Flow Type Supercritical Determine shear stress: T = 62.4 X 0.05 X 0.13=0.411b/ft2 Permissible shear stress 1.45lb/ft2 Temporary Straw lining OK VR = 4.40 X (0.1/2.20) = 0.05 Manning's (Curve D, Fig. 805c) = 0.2 Project Description Worksheet Trapezoidal Channel - MM-D-BA Flow Element Trapezoidal Channel Method Manning's Formula Solve For Channel Depth Input Data Mannings Coefficient 0.200 Slope 0.130000 ft/ft Left Side Slope 0.50 V : H Right Side Slope 0.50 V : H Bottom Width 2.00 ft Discharge 0.65 cfs Results Depth 0.27 ft Flow Area 0.7 ft2 Wetted Perimeter 3.20 ft Top Width 3.07 ft Critical Depth 0.14 ft Critical Slope 1.203577 ft/ft Velocity 0.95 ft/s Velocity Head 0.01 ft Specific Energy 0.28 ft Froude Number 0.36 Flow Type Subcritical Tall Fescue permissible velocity = 4.5 (slopes 0-5%) Velocity of 0.95ft/s is OK 0.47 ft 2.00 ft-----� V:1 H :2.0 NTS Project Description Worksheet Trapezoidal Channel - MM-D-9 Flow Element Trapezoidal Channel Method Manning's Formula Solve For Channel Depth Input Data Mannings Coefficient 0.020 Slope 0.126000 ft/ft Left Side Slope 0.50 V : H Right Side Slope 0.50 V : H Bottom Width 2.00 ft Discharge 0.65 cfs Results Depth 0.07 ft Flow Area 0.2 ft2 Wetted Perimeter 2.32 ft Top Width 2.28 ft Critical Depth 0.14 ft Critical Slope 0.012036 ft/ft Velocity 4.28 ft/s Velocity Head 0.29 ft Specific Energy 0.36 ft Froude Number 2.93 Flow Type Supercritical Velocity too High - Lining Required, Try: Straw w/net, 2-year storm event Project Description Worksheet Trapezoidal Channel - MM-D-9 Flow Element Trapezoidal Channel Method Manning's Formula Solve For Channel Depth Input Data Mannings Coefficient 0.065 Slope 0.126000 ft/ft Left Side Slope 0.50 V : H Right Side Slope 0.50 V : H Bottom Width 2.00 ft Discharge 0.42 cfs Results Depth 0.11 ft Flow Area 0.2 ft2 Wetted Perimeter 2.49 ft Top Width 2.44 ft Critical Depth 0.11 ft Critical Slope 0.137441 ft/ft Velocity 1.72 ft/s Velocity Head 0.05 ft Specific Energy 0.16 ft Froude Number 0.96 Flow Type Subcritical Determine shear stress: T = 62.4 X 0.11 X 0.126=0.86lb/ft2 Permissible shear stress 1.45lb/ft2 Temporary Straw lining OK VR = 1.72 X (0.2/2.49) = 0.08 Manning's (Curve D, Fig. 805c) = 0.2 Project Description Worksheet Trapezoidal Channel - MM-D-9 Flow Element Trapezoidal Channel Method Manning's Formula Solve For Channel Depth Input Data Mannings Coefficient 0.200 Slope 0.126000 ft/ft Left Side Slope 0.50 V : H Right Side Slope 0.50 V : H Bottom Width 2.00 ft Discharge 0.65 cfs Results Depth Flow Area Wetted Perimeter Top Width Critical Depth Critical Slope Velocity Velocity Head Specific Energy Froude Number Flow Type Tall Fescue permissible velocity = 4.5 0.27 ft 0.7 ft2 3.21 ft 3.08 ft 0.14 ft 1.203580 ft/ft 0.94 ft/s 0.01 ft 0.28 ft 0.35 Subcritical (slopes 0-5%) Velocity of 0.94ft/s is OK 0.47 ft 2.00 ft-----� V:1 H :2.0 NTS Project Description Worksheet Trapezoidal Channel - MM-D-10 Flow Element Trapezoidal Channel Method Manning's Formula Solve For Channel Depth Input Data Mannings Coefficient 0.020 Slope 0.126000 ft/ft Left Side Slope 0.50 V : H Right Side Slope 0.50 V : H Bottom Width 2.00 ft Discharge 0.61 cfs Results Depth 0.07 ft Flow Area 0.1 ftz Wetted Perimeter 2.31 ft Top Width 2.27 ft Critical Depth 0.14 ft Critical Slope 0.012170 ft/ft Velocity 4.19 ft/s Velocity Head 0.27 ft Specific Energy 0.34 ft Froude Number 2.91 Flow Type Supercritical Velocity too High - Lining Required, Try: Straw w/net, 2-year storm event Project Description Worksheet Trapezoidal Channel - MM-D- 10 Flow Element Trapezoidal Channel Method Manning's Formula Solve For Channel Depth Input Data Mannings Coefficient 0.065 Slope 0.126000 ft/ft Left Side Slope 0.50 V : H Right Side Slope 0.50 V : H Bottom Width 2.00 ft Discharge 0.39 cfs Results Depth 0.11 ft Flow Area 0.2 ft2 Wetted Perimeter 2.47 ft Top Width 2.42 ft Critical Depth 0.10 ft Critical Slope 0.139319 ft/ft Velocity 1.68 ft/s Velocity Head 0.04 ft Specific Energy 0.15 ft Froude Number 0.96 Flow Type Subcritical Determine shear stress: T = 62.4 X 0.11 X 0.126=0.86lb/ft2 Permissible shear stress 1.45lb/ft2 Temporary Straw lining OK VR = 1.68 X (0.2/2.47) = 0.14 Manning's (Curve D, Fig. 805c) = 0.165 Project Description Worksheet Trapezoidal Channel - MM-D-10 Flow Element Trapezoidal Channel Method Manning's Formula Solve For Channel Depth Input Data Mannings Coefficient 0.165 Slope 0.126000 ft/ft Left Side Slope 0.50 V : H Right Side Slope 0.50 V : H Bottom Width 2.00 ft Discharge 0.61 cfs Results Depth Flow Area Wetted Perimeter Top Width Critical Depth Critical Slope Velocity Velocity Head Specific Energy Froude Number Flow Type Tall Fescue permissible velocity = 4.5 0.23 ft 0.6 ft2 3.05 ft 2.94 ft 0.14 ft 0.828326 ft/ft 1.06 ft/s 0.02 ft 0.25 ft 0.42 Subcritical (slopes 0-5%) Velocity of 1.06ft/s is OK 0 2P ft 2.00 ft-----� V:1 H :2.0 NTS Project Description Worksheet Trapezoidal Channel - MM-D-11 Flow Element Trapezoidal Channel Method Manning's Formula Solve For Channel Depth Input Data Mannings Coefficient 0.020 Slope 0.020000 ft/ft Left Side Slope 0.50 V : H Right Side Slope 0.50 V : H Bottom Width 2.00 ft Discharge 2.03 cfs Results Depth 0.24 ft Flow Area 0.6 ft2 Wetted Perimeter 3.05 ft Top Width 2.94 ft Critical Depth 0.29 ft Critical Slope 0.009996 ft/ft Velocity 3.48 ft/s Velocity Head 0.19 ft Specific Energy 0.42 ft Froude Number 1.38 Flow Type Supercritical Velocity too High - Lining Required, Try: Straw w/net, 2-year storm event Project Description Worksheet Trapezoidal Channel - MM-D-11 Flow Element Trapezoidal Channel Method Manning's Formula Solve For Channel Depth Input Data Mannings Coefficient 0.065 Slope 0.020000 ft/ft Left Side Slope 0.50 V : H Right Side Slope 0.50 V : H Bottom Width 2.00 ft Discharge 1.31 cfs Results Depth 0.36 ft Flow Area 1.0 ftz Wetted Perimeter 3.60 ft Top Width 3.43 ft Critical Depth 0.22 ft Critical Slope 0.113056 ft/ft Velocity 1.35 ft/s Velocity Head 0.03 ft Specific Energy 0.39 ft Froude Number 0.45 Flow Type Subcritical Determine shear stress: T = 62.4 X 0.36 X 0.02=0.45lb/ft2 Permissible shear stress 1.45lb/ft2 Temporary Straw lining OK VR = 1.35 X (1/3.60) = 0.28 Manning's (Curve D, Fig. 805c) = 0.113 Project Description Project Description Worksheet Trapezoidal Channel - MM-D-11 Flow Element Trapezoidal Channel Method Manning's Formula Solve For Channel Depth Input Data Mannings Coefficient 0.113 Slope 0.020000 ft/ft Left Side Slope 0.50 V : H Right Side Slope 0.50 V : H Bottom Width 2.00 ft Discharge 2.03 cfs Results Depth Flow Area Wetted Perimeter Top Width Critical Depth Critical Slope Velocity Velocity Head Specific Energy Froude Number Flow Type Tall Fescue permissible velocity = 4.5 0.61 ft 2.0 ft2 4.73 ft 4.44 ft 0.29 ft 0.319095 ft/ft 1.03 ft/s 0.02 ft 0.63 ft 0.27 Subcritical (slopes 0-5%) Velocity of 1.03ft/s is OK 0.61 ft 2.00 ft� V:1 H :2.0 NTS Project Description Worksheet Trapezoidal Channel - MM-D-12 Flow Element Trapezoidal Channel Method Manning's Formula Solve For Channel Depth Input Data Mannings Coefficient 0.020 Slope 0.030000 ft/ft Left Side Slope 0.50 V : H Right Side Slope 0.50 V : H Bottom Width 2.00 ft Discharge 1.27 cfs Results Depth 0.16 ft Flow Area 0.4 ft2 Wetted Perimeter 2.72 ft Top Width 2.64 ft Critical Depth 0.22 ft Critical Slope 0.010757 ft/ft Velocity 3.42 ft/s Velocity Head 0.18 ft Specific Energy 0.34 ft Froude Number 1.61 Flow Type Supercritical Velocity too High - Lining Required, Try: Straw w/net, 2-year storm event Project Description Worksheet Trapezoidal Channel - MM-D-12 Flow Element Trapezoidal Channel Method Manning's Formula Solve For Channel Depth Input Data Mannings Coefficient 0.065 Slope 0.030000 ft/ft Left Side Slope 0.50 V : H Right Side Slope 0.50 V : H Bottom Width 2.00 ft Discharge 0.81 cfs Results Depth 0.24 ft Flow Area 0.6 ft2 Wetted Perimeter 3.09 ft Top Width 2.97 ft Critical Depth 0.16 ft Critical Slope 0.122400 ft/ft Velocity 1.34 ft/s Velocity Head 0.03 ft Specific Energy 0.27 ft Froude Number 0.52 Flow Type Subcritical Determine shear stress: T = 62.4 X 0.24 X 0.03=0.45lb/ft2 Permissible shear stress 1.45lb/ft2 Temporary Straw lining OK VR = 1.34 X (0.6/3.09) = 0.19 Manning's (Curve D, Fig. 805c) = 0.14 Project Description Worksheet Trapezoidal Channel - MM-D-12 Flow Element Trapezoidal Channel Method Manning's Formula Solve For Channel Depth Input Data Mannings Coefficient 0.140 Slope 0.030000 ft/ft Left Side Slope 0.50 V : H Right Side Slope 0.50 V : H Bottom Width 2.00 ft Discharge 1.27 cfs Results Depth 0.48 ft Flow Area 1.4 ft2 Wetted Perimeter 4.14 ft Top Width 3.91 ft Critical Depth 0.22 ft Critical Slope 0.527091 ft/ft Velocity 0.90 ft/s Velocity Head 0.01 ft Specific Energy 0.49 ft Froude Number 0.26 Flow Type Subcritical Tall Fescue permissible velocity = 4.5 (slopes 0-5%) Velocity of 0.90ft/s is OK OAS ft L2.00 ft� V:1 H:2.0 NTS Project Description Worksheet Trapezoidal Channel - MM-D-13 Flow Element Trapezoidal Channel Method Manning's Formula Solve For Channel Depth Input Data Mannings Coefficient 0.020 Slope 0.115000 ft/ft Left Side Slope 0.50 V : H Right Side Slope 0.50 V : H Bottom Width 2.00 ft Discharge 0.89 cfs Results Depth 0.09 ft Flow Area 0.2 ftz Wetted Perimeter 2.39 ft Top Width 2.35 ft Critical Depth 0.17 ft Critical Slope 0.011405 ft/ft Velocity 4.67 ft/s Velocity Head 0.34 ft Specific Energy 0.43 ft Froude Number 2.89 Flow Type Supercritical Velocity too High - Lining Required, Try: Straw w/net, 2-year storm event Project Description Worksheet Trapezoidal Channel - MM-D-13 Flow Element Trapezoidal Channel Method Manning's Formula Solve For Channel Depth Input Data Mannings Coefficient 0.065 Slope 0.115000 ft/ft Left Side Slope 0.50 V : H Right Side Slope 0.50 V : H Bottom Width 2.00 ft Discharge 0.57 cfs Results Depth 0.13 ft Flow Area 0.3 ft2 Wetted Perimeter 2.60 ft Top Width 2.54 ft Critical Depth 0.13 ft Critical Slope 0.130096 ft/ft Velocity 1.86 ft/s Velocity Head 0.05 ft Specific Energy 0.19 ft Froude Number 0.94 Flow Type Subcritical Determine shear stress: T = 62.4 X 0.13 X 0.115=0.93lb/ft2 Permissible shear stress 1.45lb/ft2 Temporary Straw lining OK VR = 1.86 X (0.3/2.60) = 0.12 Manning's (Curve D, Fig. 805c) = 0.18 Project Description Worksheet Trapezoidal Channel - MM-D-13 Flow Element Trapezoidal Channel Method Manning's Formula Solve For Channel Depth Input Data Mannings Coefficient 0.180 Slope 0.115000 ft/ft Left Side Slope 0.50 V : H Right Side Slope 0.50 V : H Bottom Width 2.00 ft Discharge 0.89 cfs Results Depth Flow Area Wetted Perimeter Top Width Critical Depth Critical Slope Velocity Velocity Head Specific Energy Froude Number Flow Type Tall Fescue permissible velocity = 4.5 0.31 ft 0.8 ft2 3.40 ft 3.25 ft 0.17 ft 0.923796 ft/ft 1.09 ft/s 0.02 ft 0.33 ft 0.38 Subcritical (slopes 0-5%) Velocity of 1.09ft/s is OK 0 31, ft +2.00 ft- - - - - V:1 H :2.0 NTS Project Description Worksheet Trapezoidal Channel - MM-D- 13A Flow Element Trapezoidal Channel Method Manning's Formula Solve For Channel Depth Input Data Mannings Coefficient 0.020 Slope 0.060000 ft/ft Left Side Slope 0.50 V : H Right Side Slope 0.50 V : H Bottom Width 2.00 ft Discharge 0.36 cfs Results Depth 0.06 ft Flow Area 0.1 ft2 Wetted Perimeter 2.28 ft Top Width 2.25 ft Critical Depth 0.10 ft Critical Slope 0.013387 ft/ft Velocity 2.73 ft/s Velocity Head 0.12 ft Specific Energy 0.18 ft Froude Number 1.98 Flow Type Supercritical Velocity too High - Lining Required, Try: Straw w/net, 2-year storm event Project Description Worksheet Trapezoidal Channel - MM-D- 13A Flow Element Trapezoidal Channel Method Manning's Formula Solve For Channel Depth Input Data Mannings Coefficient 0.065 Slope 0.060000 ft/ft Left Side Slope 0.50 V : H Right Side Slope 0.50 V : H Bottom Width 2.00 ft Discharge 0.23 cfs Results Depth 0.10 ft Flow Area 0.2 ft2 Wetted Perimeter 2.43 ft Top Width 2.38 ft Critical Depth 0.07 ft Critical Slope 0.153891 ft/ft Velocity 1.10 ft/s Velocity Head 0.02 ft Specific Energy 0.11 ft Froude Number 0.65 Flow Type Subcritical Determine shear stress: T = 62.4 X 0.10 X 0.06=0.37lb/ft2 Permissible shear stress 1.45lb/ft2 Temporary Straw lining OK VR = 1.10 X (0.2/2.43) = 0.09 Manning's (Curve D, Fig. 805c) = 0.2 Project Description Worksheet Trapezoidal Channel - MM-D- 13A Flow Element Trapezoidal Channel Method Manning's Formula Solve For Channel Depth Input Data Mannings Coefficient 0.200 Slope 0.060000 ft/ft Left Side Slope 0.50 V : H Right Side Slope 0.50 V : H Bottom Width 2.00 ft Discharge 0.36 cfs Results Depth Flow Area Wetted Perimeter Top Width Critical Depth Critical Slope Velocity Velocity Head Specific Energy Froude Number Flow Type Tall Fescue permissible velocity = 4.5 0.24 ft 0.6 ft2 3.07 ft 2.96 ft 0.10 ft 1.338647 ft/ft 0.61 ft/s 0.01 ft 0.24 ft 0.24 Subcritical (slopes 0-5%) Velocity of 0.61ft/s is OK 0. ft L2.00 ft--------------- v:1 N H :2.0 NTS Project Description Worksheet Trapezoidal Channel - MM-D-14 Flow Element Trapezoidal Channel Method Manning's Formula Solve For Channel Depth Input Data Mannings Coefficient 0.020 Slope 0.040000 ft/ft Left Side Slope 0.50 V : H Right Side Slope 0.50 V : H Bottom Width 2.00 ft Discharge 0.39 cfs Results Depth 0.07 ft Flow Area 0.2 ft2 Wetted Perimeter 2.33 ft Top Width 2.29 ft Critical Depth 0.10 ft Critical Slope 0.013190 ft/ft Velocity 2.47 ft/s Velocity Head 0.09 ft Specific Energy 0.17 ft Froude Number 1.66 Flow Type Supercritical Velocity too High - Lining Required, Try: Straw w/net, 2-year storm event Project Description Worksheet Trapezoidal Channel - MM-D-14 Flow Element Trapezoidal Channel Method Manning's Formula Solve For Channel Depth Input Data Mannings Coefficient 0.065 Slope 0.040000 ft/ft Left Side Slope 0.50 V : H Right Side Slope 0.50 V : H Bottom Width 2.00 ft Discharge 0.25 cfs Results Depth 0.11 ft Flow Area 0.3 ft2 Wetted Perimeter 2.51 ft Top Width 2.45 ft Critical Depth 0.08 ft Critical Slope 0.151465 ft/ft Velocity 0.99 ft/s Velocity Head 0.02 ft Specific Energy 0.13 ft Froude Number 0.54 Flow Type Subcritical Determine shear stress: T = 62.4 X 0.11 X 0.04=0.27lb/ft2 Permissible shear stress 1.45lb/ft2 Temporary Straw lining OK VR = 0.99 X (0.3/2.51) = 0..11 Manning's (Curve D, Fig. 805c) = 0.19 Project Description Worksheet Trapezoidal Channel - MM-D-14 Flow Element Trapezoidal Channel Method Manning's Formula Solve For Channel Depth Input Data Mannings Coefficient 0.190 Slope 0.040000 ft/ft Left Side Slope 0.50 V : H Right Side Slope 0.50 V : H Bottom Width 2.00 ft Discharge 0.39 cfs Results Depth 0.27 ft Flow Area 0.7 ft2 Wetted Perimeter 3.22 ft Top Width 3.09 ft Critical Depth 0.10 ft Critical Slope 1.190391 ft/ft Velocity 0.56 ft/s Velocity Head 4.91e-3 ft Specific Energy 0.28 ft Froude Number 0.21 Flow Type Subcritical Tall Fescue permissible velocity = 4.5 (slopes 0-5%) Velocity of 0.56ft/s is OK 0 .47 ft �2.00 ft-------------- VA N H 2.0 NTS Project Description Worksheet Trapezoidal Channel - MM-D- 14A Flow Element Trapezoidal Channel Method Manning's Formula Solve For Channel Depth Input Data Mannings Coefficient 0.020 Slope 0.050000 ft/ft Left Side Slope 0.50 V : H Right Side Slope 0.50 V : H Bottom Width 2.00 ft Discharge 0.41 cfs Results Depth 0.07 ft Flow Area 0.2 ftz Wetted Perimeter 2.32 ft Top Width 2.28 ft Critical Depth 0.11 ft Critical Slope 0.013069 ft/ft Velocity 2.70 ft/s Velocity Head 0.11 ft Specific Energy 0.18 ft Froude Number 1.85 Flow Type Supercritical Velocity too High - Lining Required, Try: Straw w/net, 2-year storm event Project Description Worksheet Trapezoidal Channel - MM-D- 14A Flow Element Trapezoidal Channel Method Manning's Formula Solve For Channel Depth Input Data Mannings Coefficient 0.065 Slope 0.050000 ft/ft Left Side Slope 0.50 V : H Right Side Slope 0.50 V : H Bottom Width 2.00 ft Discharge 0.26 cfs Results Depth 0.11 ft Flow Area 0.2 ft2 Wetted Perimeter 2.49 ft Top Width 2.43 ft Critical Depth 0.08 ft Critical Slope 0.150324 ft/ft Velocity 1.08 ft/s Velocity Head 0.02 ft Specific Energy 0.13 ft Froude Number 0.60 Flow Type Subcritical Determine shear stress: T = 62.4 X 0.11 X 0.05=0.34lb/ft2 Permissible shear stress 1.45lb/ft2 Temporary Straw lining OK VR = 1.08 X (0.2/2.49) = 0.08 Manning's (Curve D, Fig. 805c) = 0.2 Project Description Worksheet Trapezoidal Channel - MM-D- 14A Flow Element Trapezoidal Channel Method Manning's Formula Solve For Channel Depth Input Data Mannings Coefficient 0.200 Slope 0.050000 ft/ft Left Side Slope 0.50 V : H Right Side Slope 0.50 V : H Bottom Width 2.00 ft Discharge 0.41 cfs Results Depth 0.27 ft Flow Area 0.7 ft2 Wetted Perimeter 3.21 ft Top Width 3.08 ft Critical Depth 0.11 ft Critical Slope 1.306946 ft/ft Velocity 0.60 ft/s Velocity Head 0.01 ft Specific Energy 0.28 ft Froude Number 0.22 Flow Type Subcritical Tall Fescue permissible velocity = 4.5 (slopes 0-5%) Velocity of 0.60ft/s is OK 0.47 ft 2.00 ft-----� V:1 H :2.0 NTS Project Description Worksheet Trapezoidal Channel - MM-D-15 Flow Element Trapezoidal Channel Method Manning's Formula Solve For Channel Depth Input Data Mannings Coefficient 0.020 Slope 0.096000 ft/ft Left Side Slope 0.50 V : H Right Side Slope 0.50 V : H Bottom Width 2.00 ft Discharge 0.92 cfs Results Depth 0.09 ft Flow Area 0.2 ft2 Wetted Perimeter 2.42 ft Top Width 2.38 ft Critical Depth 0.18 ft Critical Slope 0.011342 ft/ft Velocity 4.46 ft/s Velocity Head 0.31 ft Specific Energy 0.40 ft Froude Number 2.67 Flow Type Supercritical Velocity too High - Lining Required, Try: Straw w/net, 2-year storm event Project Description Worksheet Trapezoidal Channel - MM-D-15 Flow Element Trapezoidal Channel Method Manning's Formula Solve For Channel Depth Input Data Mannings Coefficient 0.065 Slope 0.096000 ft/ft Left Side Slope 0.50 V : H Right Side Slope 0.50 V : H Bottom Width 2.00 ft Discharge 0.59 cfs Results Depth 0.15 ft Flow Area 0.3 ft2 Wetted Perimeter 2.65 ft Top Width 2.58 ft Critical Depth 0.13 ft Critical Slope 0.129305 ft/ft Velocity 1.78 ft/s Velocity Head 0.05 ft Specific Energy 0.19 ft Froude Number 0.87 Flow Type Subcritical Determine shear stress: T = 62.4 X 0.15 X 0.096=0.89lb/ft2 Permissible shear stress 1.45lb/ft2 Temporary Straw lining OK VR = 1.78 X (0.3/2.65) = 0.20 Manning's (Curve D, Fig. 805c) = 0.135 Project Description Worksheet Trapezoidal Channel - MM-D-15 Flow Element Trapezoidal Channel Method Manning's Formula Solve For Channel Depth Input Data Mannings Coefficient 0.135 Slope 0.096000 ft/ft Left Side Slope 0.50 V : H Right Side Slope 0.50 V : H Bottom Width 2.00 ft Discharge 0.92 cfs Results Depth 0.28 ft Flow Area 0.7 ft2 Wetted Perimeter 3.27 ft Top Width 3.14 ft Critical Depth 0.18 ft Critical Slope 0.516764 ft/ft Velocity 1.26 ft/s Velocity Head 0.02 ft Specific Energy 0.31 ft Froude Number 0.46 Flow Type Subcritical Tall Fescue permissible velocity = 4.5 (slopes 0-5%) Velocity of 1.26ft/s is OK 0.2p ft L2.00 ft-------------- VA N H 2.0 NTS Project Description Worksheet Trapezoidal Channel - MM-D-16 Flow Element Trapezoidal Channel Method Manning's Formula Solve For Channel Depth Input Data Mannings Coefficient 0.020 Slope 0.168000 ft/ft Left Side Slope 0.50 V : H Right Side Slope 0.50 V : H Bottom Width 2.00 ft Discharge 0.47 cfs Results Depth 0.05 ft Flow Area 0.1 ftz Wetted Perimeter 2.24 ft Top Width 2.21 ft Critical Depth 0.12 ft Critical Slope 0.012748 ft/ft Velocity 4.16 ft/s Velocity Head 0.27 ft Specific Energy 0.32 ft Froude Number 3.25 Flow Type Supercritical Velocity too High - Lining Required, Try: Straw w/net, 2-year storm event Project Description Worksheet Trapezoidal Channel - MM-D-16 Flow Element Trapezoidal Channel Method Manning's Formula Solve For Channel Depth Input Data Mannings Coefficient 0.065 Slope 0.168000 ft/ft Left Side Slope 0.50 V : H Right Side Slope 0.50 V : H Bottom Width 2.00 ft Discharge 0.30 cfs Results Depth 0.08 ft Flow Area 0.2 ft2 Wetted Perimeter 2.37 ft Top Width 2.33 ft Critical Depth 0.09 ft Critical Slope 0.146298 ft/ft Velocity 1.67 ft/s Velocity Head 0.04 ft Specific Energy 0.13 ft Froude Number 1.07 Flow Type Supercritical Determine shear stress: T = 62.4 X 0.08 X 0.168=0.83lb/ft2 Permissible shear stress 1.45lb/ft2 Temporary Straw lining OK VR = 1.67 X (0.2/2.37) = 0.14 Manning's (Curve D, Fig. 805c) = 0.165 Project Description Worksheet Trapezoidal Channel - MM-D-16 Flow Element Trapezoidal Channel Method Manning's Formula Solve For Channel Depth Input Data Mannings Coefficient 0.165 Slope 0.168000 ft/ft Left Side Slope 0.50 V : H Right Side Slope 0.50 V : H Bottom Width 2.00 ft Discharge 0.47 cfs Results Depth 0.19 ft Flow Area 0.4 ft2 Wetted Perimeter 2.83 ft Top Width 2.74 ft Critical Depth 0.12 ft Critical Slope 0.867720 ft/ft Velocity 1.07 ft/s Velocity Head 0.02 ft Specific Energy 0.20 ft Froude Number 0.47 Flow Type Subcritical Tall Fescue permissible velocity = 4.5 (slopes 0-5%) Velocity of 1.07ft/s is OK 0 .119 ft 2.00 ft VAN H 2.0 NTS