HY-8 Culvert Analysis Report
Crossing Discharge Data
Discharge Selection Method: Specify Minimum, Design, and Maximum Flow
Minimum Flow: 0 cfs
Design Flow: 121.836 cfs
Maximum Flow: 194.231 cfs
Table 1 - Summary of Culvert Flows at Crossing: 1f1.5_P0.01
Headwater Elevation Alc_1 Discharge Roadway Discharge
Total Discharge (cms) Iterations
(m) (cms) (cms)
1000.00 0.00 0.00 0.00 1
1000.51 0.55 0.55 0.00 1
1000.73 1.10 1.10 0.00 1
1000.94 1.65 1.65 0.00 1
1001.12 2.20 2.20 0.00 1
1001.29 2.75 2.75 0.00 1
1001.46 3.30 3.30 0.00 1
1001.50 3.45 3.45 0.00 1
1001.81 4.40 4.40 0.00 1
1002.02 4.95 4.95 0.00 1
1002.25 5.50 5.49 0.00 16
1002.25 5.49 5.49 0.00 Overtopping
Rating Curve Plot for Crossing: 1f1.5_P0.01
Table 2 - Culvert Summary Table: Alc_1
Total Culvert Headwater Inlet Outlet Outlet Tailwater
Flow Normal Critical Outlet Tailwater
Discharge Discharge Elevation Control Control Velocity Velocity
Type Depth (m) Depth (m) Depth (m) Depth (m)
(cms) (cms) (m) Depth (m) Depth (m) (m/s) (m/s)
0.00 0.00 1000.00 0.000 0.000 0-NF 0.000 0.000 0.000 0.000 0.000 0.000
0.55 0.55 1000.51 0.506 0.279 1-S2n 0.298 0.371 0.315 0.334 1.963 0.987
1.10 1.10 1000.73 0.731 0.464 1-S2n 0.424 0.531 0.456 0.513 2.338 1.219
1.65 1.65 1000.94 0.942 0.633 1-S2n 0.523 0.657 0.569 0.659 2.593 1.369
2.20 2.20 1001.12 1.125 0.816 1-S2n 0.612 0.764 0.668 0.785 2.795 1.482
2.75 2.75 1001.29 1.292 1.003 1-S2n 0.694 0.857 0.759 0.897 2.969 1.572
3.30 3.30 1001.46 1.456 1.197 1-S2n 0.773 0.943 0.843 1.001 3.126 1.649
3.45 3.45 1001.50 1.501 1.252 5-S2n 0.794 0.965 0.865 1.027 3.166 1.668
4.40 4.40 1001.81 1.814 1.613 5-S2n 0.929 1.092 1.001 1.185 3.410 1.774
4.95 4.95 1002.02 2.022 1.837 5-S2n 1.011 1.157 1.078 1.269 3.544 1.827
5.50 5.49 1002.25 2.252 2.177 5-S1t 1.100 1.216 1.349 1.349 3.223 1.875
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Straight Culvert
Inlet Elevation (invert): 1000.00 m, Outlet Elevation (invert): 999.90 m
Culvert Length: 12.00 m, Culvert Slope: 0.0083
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Culvert Performance Curve Plot: Alc_1
Water Surface Profile Plot for Culvert: Alc_1
Site Data - Alc_1
Site Data Option: Culvert Invert Data
Inlet Station: 0.00 m
Inlet Elevation: 1000.00 m
Outlet Station: 12.00 m
Outlet Elevation: 999.90 m
Number of Barrels: 1
Culvert Data Summary - Alc_1
Barrel Shape: Circular
Barrel Diameter: 1500.00 mm
Barrel Material: Concrete
Embedment: 0.00 mm
Barrel Manning's n: 0.0140
Culvert Type: Straight
Inlet Configuration: Square Edge with Headwall
Inlet Depression: None
Table 3 - Downstream Channel Rating Curve (Crossing: 1f1.5_P0.01)
Water Surface
Flow (cms) Depth (m) Velocity (m/s) Shear (Pa) Froude Number
Elev (m)
0.00 999.90 0.00 0.00 0.00 0.00
0.55 1000.23 0.33 0.99 32.77 0.57
1.10 1000.41 0.51 1.22 50.33 0.58
1.65 1000.56 0.66 1.37 64.57 0.59
2.20 1000.68 0.78 1.48 76.91 0.59
2.75 1000.80 0.90 1.57 87.97 0.59
3.30 1000.90 1.00 1.65 98.08 0.59
3.45 1000.93 1.03 1.67 100.70 0.59
4.40 1001.09 1.19 1.77 116.19 0.59
4.95 1001.17 1.27 1.83 124.42 0.59
5.50 1001.25 1.35 1.88 132.23 0.59
Tailwater Channel Data - 1f1.5_P0.01
Tailwater Channel Option: Trapezoidal Channel
Bottom Width: 1.50 m
Side Slope (H:V): 0.50 (_:1)
Channel Slope: 0.0100
Channel Manning's n: 0.0400
Channel Invert Elevation: 999.90 m
Roadway Data for Crossing: 1f1.5_P0.01
Roadway Profile Shape: Constant Roadway Elevation
Crest Length: 20.00 m
Crest Elevation: 1002.25 m
Roadway Surface: Paved
Roadway Top Width: 10.00 m
