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Advanced Hydrotechnical Considerations. Overview. Hydrotechnical Review Pier Scour Inspection RPW Inspection Case Study. Hydrotechnical Review. Area Shape Slope Channel Storage Density Vegetation Soil Type Initial Moisture. Hydrotechnical Design Guidelines : Channel Capacity
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Overview • Hydrotechnical Review • Pier Scour Inspection • RPW Inspection • Case Study
Hydrotechnical Review • Area • Shape • Slope • Channel • Storage • Density • Vegetation • Soil Type • Initial Moisture
Hydrotechnical Design Guidelines : • Channel Capacity • Historic Highwater Data • Drift, debris • Scars, erosion • Locals, photos • Runoff Potential
A Q Water Surface V = Q A Y Thalweg
Bridge Culvert
Flow Parallel to Pier Flow on Skew to Pier
Dam Aggradation Degradation QsD50 ~ QS
High 1 2 3a Relative Stability 3b 4 Low 5 Relative Stability Low High
Spurs Guidebank Dyke RPW Inspection Embankment Spurs
1 2 Typical Rock Riprap Section
1951 1972 1989 2008
Case Study BF78104 McLeod River near Peers Hwy 32