inlet configurations

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You can select from the following inlet configurations which are available according to the selected culvertshape. The following inlet conditions are available (see drawing), but may not apply to all shapes or materials:

ProjectingGrooved end with headwall (0.05 X 0.07D)Grooved end projecting (0.05 X 0.07D)Square edge with headwallBeveledMitered to conform with fill slopeHeadwall

The user can select only one inlet condition for each culvert. Detailed explanations of these inlet conditions canbe found in FHWA Publication HDS No. 5 (2001) bundled with the program.

This configurationresults in the end ofthe culvert barrelprojecting out ofthe embankment.

The grooved pipe isfor concreteculverts anddecreases the lossthrough the culvertentrance.

WMS:HY-8 Inlet Configurations - XMS Wiki - http://wikis.aquaveo.co... http://www.xmswiki.com/xms/WMS:HY-8_Inlet_Configurations

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This option is forconcrete pipeculverts.

Square edge withheadwall is anentrance conditionwhere the culvertentrance is flushwith the headwall.

'Beveled edges' is atapered inlet edgethat decreases headloss as flow entersthe culvert barrel.

A mitered entranceis when the culvertbarrel is cut so it isflush with theembankment slope.

Wingwalls are usedwhen the culvert isshorter than theembankment andpreventsembankmentmaterial fromfalling into theculvert


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NOTE: HDS-5 notes that "Flared end sections made of either metal or concrete, are the sectionscommonly available from manufacturers. From limited hydraulic tests they are equivalent in operation toa headwall in both inlet and outlet control. Some end sections, incorporating a closed taper in their designhave a superior hydraulic performance. These latter sections can be designed using the information givenfor the beveled inlet"

Introduction: Getting Started · Differences from DOS HY-8 · Limitations · Vena ContractaBuilding a Project: Locate Project · Culvert Crossing Data · Run Analysis · Report Generation

Crossing DataGeneral Data: Crossings · Discharge Data

Roadway Data: Roadway ProfileTailwater Data: Channel Shape · Rating Curve · Constant Tailwater Elevation

Irregular Channel: Irregular Channel ErrorCulvert Data

Culvert Data: Shapes · Material · Plastic Pipe Materials · Concrete Open Bottom Arch · South Dakota Concrete Box · CulvertType · Broken Back Culverts · Inlet Configurations · Inlet Depression · Embedment Depth

Site Data: Culvert Invert Data · Embankment Toe DataAnalysis

General: Project Units · Roadway OvertoppingHeadwater Computations: Inlet Control Computations: Polynomial Generation · Polynomial Coefficients · Outlet Control

Computations: Exit Loss Options · Hydraulic Jump CalculationsTables and Plots: Crossing Summary · Culvert Summary · Water Surface Profiles · Tapered Inlet · Customized · Controlling

Plot Display OptionsEnergy Dissipation

Scour Hole GeometryInternal 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 ApronExternal 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: ColoradoState University (CSU) Rigid Boundary Basin · Riprap Basin and Apron · Contra Costa Basin · Hook Basin · USBR Type VI

Impact Basin

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This page was last modified on 6 October 2011, at 19:17.

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inlet configurations

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