HY8:Inlet Configurations: Difference between revisions

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


*Projecting
*Projecting
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*Mitered to conform with fill slope
*Mitered to conform with fill slope
*Headwall
*Headwall
*Wingwalls




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{| Border=2 CellPadding=5 CellSpacing=2  
{| Border=2 CellPadding=5 CellSpacing=2  
|-
|-
| Width=263 Align=Center | [[Image:HY8Projecting.jpg]] || Width=130 Valign=Center | This edge condition results in the end of the culvert barrel projecting out of the embankment.
| Width=263 Align=Center | [[Image:HY8Projecting.jpg]] || Width=130 Valign=Center | This configuration results in the end of the culvert barrel projecting out of the embankment.
|-
|-
| Align=Center | [[Image:HY8GroovedHeadWall(FINAL).JPG]] || Valign=Center | The grooved pipe is for concrete culverts  and decreases the loss through the culvert entrance.
| Align=Center | [[Image:HY8GroovedHeadWall(FINAL).JPG]] || Valign=Center | The grooved pipe is for concrete culverts  and decreases the loss through the culvert entrance.
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| Align=Center | [[Image:HY8SquareEdgeHeadWall(FINAL).JPG]] || Valign=Center | Square edge with headwall is an entrance condition where the culvert entrance is flush with the headwall.
| Align=Center | [[Image:HY8SquareEdgeHeadWall(FINAL).JPG]] || Valign=Center | Square edge with headwall is an entrance condition where the culvert entrance is flush with the headwall.
|-
|-
| Align=Center | [[Image:HY8BevelEdgeHeadWall(FINAL).JPG]] || Valign=Center | 'Beveled edges' is an improved inlet edge that decreases head loss as flow enters the culvert barrel.
| Align=Center | [[Image:HY8BevelEdgeHeadWall(FINAL).JPG]] || Valign=Center | 'Beveled edges' is a tapered inlet edge that decreases head loss as flow enters the culvert barrel.
|-
|-
| Align=Center | [[Image:HY8Mitered.jpg]] || Valign=Center | A mitered entrance is when the culvert barrel is cut so it is flush with the  embankment slope.
| Align=Center | [[Image:HY8Mitered.jpg]] || Valign=Center | A mitered entrance is when the culvert barrel is cut so it is flush with the  embankment slope.
|-
|-
| Align=Center | [[Image:HY8Wingwalls(FINAL).JPG]] || Valign=Center | Wingwalls are used when the culvert is shorter than the embankment and prevents embankment material from falling into the culvert
| Align=Center | [[Image:HY8Wingwalls(FINAL).JPG]] || Valign=Center | Wingwalls are used when the culvert is shorter than the embankment and prevents embankment material from falling into the culvert.
|}
|}


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{{hide in print|
{{HY8Main}}
==''Related Topics''==
[[Category:Culvert Data|I]]
 
===Introduction===
* [[WMS:HY-8|Introduction]]
===Culvert Data===
====Culvert Data====
:* [[WMS:HY-8 Culvert Data|Culvert Data]]
:* [[WMS:HY-8 Shapes|Shapes]]
:* [[WMS:HY-8 Material|Material]]
:* [[WMS:HY-8 Plastic Pipe Materials|Plastic Pipe Materials]]
:* [[WMS:HY-8 Concrete Open Bottom Arch|Concrete Open-Bottom Arch]]
:* [[WMS:HY-8 Inlet Type|Inlet Type]]
:* [[WMS:HY-8 Inlet Edge Conditions|Inlet Edge Conditions]]
:* [[WMS:HY-8 Inlet Depression|Inlet Depression]]
:* [[WMS:HY-8 Embedment Depth|Embedment Depth]]
 
====Site Data====
:* [[WMS:HY-8 Site Data Input Option|Site Data Input Option]]
:* [[WMS:HY-8 Culvert Invert Data|Culvert Invert Data]]
:* [[WMS:HY-8 Embankment Toe Data|Embankment Toe Data]]
}}

Latest revision as of 21:32, 28 February 2018

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

  • Projecting
  • Grooved end with headwall (0.05 X 0.07D)
  • Grooved end projecting (0.05 X 0.07D)
  • Square edge with headwall
  • Beveled
  • Mitered to conform with fill slope
  • Headwall
  • Wingwalls


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


HY8Projecting.jpg This configuration results in the end of the culvert barrel projecting out of the embankment.
HY8GroovedHeadWall(FINAL).JPG The grooved pipe is for concrete culverts and decreases the loss through the culvert entrance.
HY8GroovedProjecting(FINAL).JPG This option is for concrete pipe culverts.
HY8SquareEdgeHeadWall(FINAL).JPG Square edge with headwall is an entrance condition where the culvert entrance is flush with the headwall.
HY8BevelEdgeHeadWall(FINAL).JPG 'Beveled edges' is a tapered inlet edge that decreases head loss as flow enters the culvert barrel.
HY8Mitered.jpg A mitered entrance is when the culvert barrel is cut so it is flush with the embankment slope.
HY8Wingwalls(FINAL).JPG Wingwalls are used when the culvert is shorter than the embankment and prevents embankment material from falling into the culvert.


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


v • e
HY-8
Introduction:Getting Started   •   Layout   •   Vena Contracta   •   Building a Project   •   Locate Project   •   Culvert Crossing Data   •   Run Analysis   •   Report Generation
Crossing and Culvert Data:Crossings   •   Discharge Data   •   Roadway Data   •   Tailwater Data   •   Irregular Channel   •   Culvert Data   •   Site Data   •   Culvert Invert Data   •   Embankment Toe Data
AnalysisProject Units   •   Roadway Overtopping   •   Inlet Control Computations   •   Outlet Control Computations   •   Tables and Plots
Energy DissipationScour Hole Geometry   •   Increased Resistance   •   Tumbling Flow   •   USBR Type IX Baffled Apron   •   Drop Structures   •   Stilling Basins   •   Streambed Level Structures
MethodsAquatic Organism Passage   •   Low Flow Hydraulics
TroubleshootingDifferences from DOS HY-8   •   Limitations   •   HY-8 User Manual
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