Template:HY8Main

HY-8

Introduction: Getting Started · Differences from DOS HY-8 · Limitations
Building a Project: Locate Project · Culvert Crossing Data · Run Analysis · Report Generation
Crossing Data
General Data: Crossings · Discharge Data
Roadway Data: Roadway Profile
Tailwater Data: Channel Shape · Rating Curve · Constant Tailwater Elevation
Irregular Channel: Irregular Channel Error
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
Site Data: Culvert Invert Data · Embankment Toe Data
Analysis
General: Project Units · Roadway Overtopping
Headwater Computations: Inlet Control Computations: Polynomial Generation · Polynomial Coefficients · Outlet Control Computations: Exit Loss Options · Hydraulic Jump Calculations
Tables and Plots: Crossing Summary · Culvert Summary · Water Surface Profiles · Tapered Inlet · Customized · Controlling Plot Display Options
Energy Dissipation
Scour Hole Geometry
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
External Dissipators: Drop Structures: Box Inlet Drop Structure · Straight Drop Structure · Stilling Basins: USBR Type III Stilling Basin · USBR Type IV Stilling Basin · Saint Anthony Falls (SAF Stilling Basin) · Streambed Level Structures: Colorado State University (CSU) Rigid Boundary Basin · Riprap Basin and Apron · Contra Costa Basin · Hook Basin · USBR Type VI Impact Basin