Import flow file from one hec ras model to another
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See examples of storm damage caused by excessive stream hydraulic forces from Furnace Creek in Figure 1 and Rincon Creek in Figure 2. Without revetments to stabilize streambanks and subsequently protect facilities where necessary, public safety and infrastructure can be impacted. With the possibility of culvert or bridge instability, migration of fish and other organisms can be impaired because of barriers created by excessive scour and vertical change in stream bed. For cross culverts and bridges, streambank damage can cause culvert beddings and bridge abutments to be undermined threatening their structural integrity. If lateral scour occurs in the streambank, the highway embankment and structural section could be undermined potentially causing collapse of the highway. For example, a stream that runs parallel to a highway will likely share its streambank with the highway fill slope. If these facilities should become unstable, the safety of the traveling public using the highway system could be in question. When streambanks are scoured, adjacent or nearby highway embankments, culverts, and bridges are left vulnerable to attack from hydraulic forces that may cause them to become unstable. Banks along curved sections of streams where impinging flow occurs are most susceptible to damage from scour. Streambank revetments are used to repair banks that have been damaged from scour and erosion commonly due to flood events, as well as prevent damage from future flood flows. Table J: Permeability Criterion Check, Universal Filter and RSP Interface 1.1 Introduction
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Table I: Piping Criterion Check, Universal Filter and RSP Interface
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Table H: Universal Gravel Filter Gradation Table F: Main Channel Degree of Meandering (m 5) Table E: Main Channel Vegetation Density (n 4) Table D: Main Channel Relative Effect of Obstructions (n 3) Table C: Main Channel Cross Section Variation (n 2) Table B: Main Channel Degree of Irregularity (n 1) Table A: Main Channel Bed and Bank Surface Material (n 0) Table of Contents 1.1 Introduction 2.1 Fundamentals of Stream ProcessesĢ.1.5 Streambank Erosion 3.1 Positive and Negataive Effects on Streams from vegetation Use in Bank Stabilization 4.1 Hybrid Revetment Design Premise 5.1 Hybrid Revetment Design-Responsible Charge Explanation 6.1 Pre-Construction Modeling and AnalysisĦ.1.2.1 Pre-Construction Manning's n-Value SelectionĦ.1.2.2 Pre-Construction Hydraulic Model 7.1 Hybrid Revetment Designħ.1.4 Vegetation 8.1 Post-Construction Modeling and AnalysisĨ.1.1 Post Construction Manning's n-ValuesĨ.1.2 Post-Construction Hydraulic Model 9.1 Hybrid Revetment Project Development 10.1 Construction Order of Work 11.1 References 12.1 AppendicesĪppendix C: Sample Hybrid Revetment Plan Sheets & Design Cross SectionsĪppendix D: Gravel Filter Nonstandard Special Provision Table of Figuresįigure 1: Highway 190 Roadway Failure, Death Valley, Summer 2004įigure 2: Highway 150 Bridge Failure, Central Coast, Winter 2005įigure 3: Straight Stream Pattern Schematic (Admiraal 2007)įigure 4: Braided Stream Pattern Schematic (Leopold et al 1992)įigure 5: Meandering Stream Pattern Schematic (Admiraal 2007)įigure 7: Weaver Creek, Root System through Soil and RSPįigure 8: Navarro Creek (December 2012), Main Channel Bankįigure 9: Cedar Creek (July 2005), Main Channel Bank-Toeįigure 10: Cedar Creek (December 2011), Main Channel Bank-Toeįigure 11: Cedar Creek (July 2005), Lower Limit of Medium Vegetation Densityįigure 12: North Fork Mattole River, Medium Vegetation Densityįigure 13: Rush Creek, High Vegetation Densityįigure 14: Design Height Exceeds Main Channel Capacityįigure 16: Hybrid Revetment Cross Sectionįigure 17: Gibbson Creek, Cuttings through RSP (Right After Installation, Fall 2010)įigure 18: Gibbson Creek, Cuttings through RSP (Summer 2010)įigure 19: Live Cutting Vertical Orientationįigure 20: Live Cutting Perpendicular Orientationįigure 22: Weaver Creek (2012), Mature Vegetation in Plastic Tubesįigure 23: Weaver Creek (1997), Cuttings in Plastic Tubes Just After Installationįigure 24: Active Channel Delineation (adapted from CDFW (2004)) Table of Tables Hybrid Streambank Revetments: Vegetated Rock Slope Protection