HY8:HY-8 User Manual 7.5

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HY-8 User Manual (v7.3)

1. Introduction: Introduction; Getting Started; Differences from DOS HY-8; Limitations; Vena Contracta

2. Building a Project: Building a Project; Locate Project; Culvert Crossing Data; Run Analysis; Report Generation

3. Crossing Data
3.1. General Data: Crossings; Discharge Data
3.2. Roadway Data: Roadway Data; Roadway Profile
3.3. Tailwater Data: Tailwater Data; Channel Shape; Rating Curve; Constant Tailwater Elevation
3.3.1. Irregular Channel: Irregular Channel; Irregular Channel Error

4. Culvert Data
4.1. Culvert Data: Culvert Data; Shapes; Material; Plastic Pipe Materials; Concrete Open Bottom Arch; South Dakota Concrete Box; Culvert Type; Broken Back Culverts; Inlet Configurations; Inlet Depression; Embedment Depth
4.2. Site Data: Site Data Input Option; Culvert Invert Data; Embankment Toe Data

5. Analysis
5.1. General: Project Units; Roadway Overtopping
5.2. Head Water Computations
5.2.1. Inlet Control: Inlet Control Computations; Polynomial Generation; Polynomial Coefficients
5.2.2. Outlet Control: Outlet Control Computations; Exit Loss Options; Hydraulic Jump Calculations
5.3. Tables and Plots: Tables and Plots; Crossing Summary; Culvert Summary; Water Surface Profiles; Tapered Inlet; Customized; Controlling Plot Display Options

6. Energy Dissipation: Energy Dissipators
6.1. Scour Hole Geometry: Scour Hole Geometry
6.2. Internal Energy Dissipators: Increased Resistance in Box Culverts; Increased Resistance in Circular Culverts; Tumbling Flow in Box Culverts; Tumbling Flow in Circular Culverts; USBR Type IX Baffled Apron
6.3. External Dissipators
6.3.1. Drop Structures: Drop Structures; Box Inlet Drop Structure; Straight Drop Structure
6.3.2. Stilling Basin: Stilling Basins; USBR Type III Stilling Basin; USBR Type IV Stilling Basin; Saint Anthony Falls (SAF Stilling Basin)
6.3.3. Streambed level Structures: Streambed Level Structures; Colorado State University (CSU) Rigid Boundary Basin; Riprap Basin and Apron; Contra Costa Basin; Hook Basin; USBR Type VI Impact Basin