Drainage Manual Chapters 6 & 7
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Chapter 6 |
Hydrology |
Introduction, Surveys, Flood Hazards, Coordination, Documentation, Evaluation of Runoff Factors, Flood History, Hydrologic Method, Design Discharge, Approved Methods, Design Frequency, Economics, Review Frequency |
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Introduction, Definition, Factors Affecting Floods, Sources of Information | ||
| Symbols And Definitions | ||
| Hydrologic Analysis Procedure Flowchart | ||
| Concept Definitions | ||
| Design Frequency |
Frequency Table, Rainfall vs. Flood Frequency, Rainfall Curves, Discharge Determination | |
| Hydrologic Procedure Selection |
Peak Flow Rates or Hydrographs, Hydrologic Procedures | |
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Definition, Hydrologic Accuracy, Calibration Process | ||
| Rational Method |
Introduction, Application, Characteristics, Equation, Infrequent Storm, Procedures | |
| Analysis of Stream Gage Data |
Introduction, Application, Graphical Method Procedure, Statistical Method Procedure, Skew | |
| Procedure, Transfer Equation | ||
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Limits, Calibration, Year Flood | ||
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USGS Regression Equations - Adjustment for Basin Urbanization |
Characteristics | |
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HEC-1 and TR20, Application, Description, Schematic, Documentation | ||
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Detour and Temporary Roadways, Haul Roads, Other Hydraulic Facilities | ||
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Average Daily and Spring Flows | ||
| References | ||
| Appendix A - Design Frequencies | ||
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Appendix B - Precipitation Frequency Estimates For Connecticut |
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Appendix C - Travel Time Estimation |
Time Of Concentration, Travel Time, Sheet-Flow Travel Time, Shallow Concentrated Flow Travel Time, Open Channel Flow Travel Time, Reservoir or Lake Flow Travel Time, Limitations | |
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Submittal, Hydrologic Design Report | ||
| Appendix E - Major Flood Events in Connecticut Since 1927 | ||
| Appendix F - Design Procedure: Hydrology for Temporary Facilities | ||
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Chapter 7 |
Channels |
Introduction, Purpose, Definitions, Significance |
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General, ConnDEP Requirements | ||
| Design Criteria |
General, Roadside Channels (Type A), Natural Channels (Type B) | |
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General, Specific Energy, Velocity Distribution Coefficient, Total Energy Head, Steady and Unsteady Flow, Uniform Flow and Nonuniform Flow, Gradually-Varied and Rapidly Varied, Froude Number, Critical Flow, Flow Classification, Equation | ||
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Introduction, Levels of Assessment, Factors That Affect Stream Stability, Stream Response to Change, Countermeasures | ||
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General Design Considerations, Vertical Alignment, Horizontal Alignment, Swales, Interceptor Channels, Type A Channel Design Concepts, Erosion Control Matting | ||
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General, Cross Sections, Step-Backwater Models Methodology, Water Surface Profile Computation, Water Surface Profile Computation Procedure, Design Procedure for Natural Channels (Type B), Documentation | ||
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Purpose, Erosion Potential, Symbols and Definitions, Design Criteria, Bank and Lining Failure Modes, Revetment Types, Flow Resistance | ||
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Rock Riprap, Bank Slope, Rock Size, Particle Erosion, Steep Slopes, Bridge Piers, Ice Damage, Rock Gradation, Layer Thickness | ||
| References | ||
| Appendix A - Simplified Methods for Estimating Wave Height | ||
| Appendix B -Vegetative (Grass) Swales and Erosion Control Matting | ||