Culvert Hydraulics Hydrotechnical Design Parameters Channel Hydraulics Culvert Hydraulics Culvert Sizing

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Culvert Hydraulics Area Shape Slope Storage Density Vegetation Soil Type Initial Moisture

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Culvert Hydraulics Hydrotechnical Design Parameters Channel Hydraulics Culvert Hydraulics Culvert Sizing Culvert Hydraulics Hydrotechnical Design Parameters Culvert Hydraulics Area Shape Slope Storage Density Vegetation Soil Type Initial Moisture Culvert Hydraulics Options - Statistics Gauges >30 Years (212) Culvert Hydraulics Options - Model Culvert Hydraulics ComponentGoverns% System Channel CapacityMost channels> 80% Historic HWMLarge streams~ 10% Runoff PotentialSmall basins< 5% Hydrotechnical Design Guidelines Culvert Hydraulics Channel Capacity Culvert Hydraulics Historic Highwater - AT Culvert Hydraulics Basin Runoff Potential Culvert Hydraulics Channel Hydraulics Culvert Hydraulics S 1 Y V = 14 Y 0.67 S 0.4 Normal Flow Culvert Hydraulics B h T Q = AV Culvert Hydraulics S 1 1. Normal 2. RVF 3. GVF Other Flow Profile Cases Culvert Hydraulics S 1 EGL EGL flows downhill Head loss at RVF E = Y + V 2 /2g Culvert Hydraulics Bridge Culvert Culvert Hydraulics RVF - Expansion RVF - Contraction Barrel GVF + D/S Channel - Normal U/S Channel - GVF Trans - Adverse Trans - Steep Culvert Hydraulics Culvert Sizing Culvert Hydraulics Sizing: Complex need model Start : Rise = burial + Y + headloss Range - sizes, shapes, barrels, profiles Parameters V, freeboard/ponding Practical drift/ice, future lining Culvert Hydraulics Considerations: Fish Passage Blockage - Drift, Icing End Protection Works (V) Ponding: -Upstream Flooding -Uplift Failure -Embankment Stability -Road Overtopping