HY8:Plastic Pipe Materials: Difference between revisions

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[[Category:Culvert Data|P]]

Latest revision as of 15:00, 4 October 2016

HY-8 7.1 has been updated to incorporate different types of plastic pipes. The following types of plastic pipes and their associated inlet configurations have been added to HY-8 7.1:


1. PVC
a. Manning’s n (From HDS-5): 0.009-0.011 (use 0.011)
b. Inlet Configurations:
i. Square Edge with Headwall
1. Notes:
a. Use HY8 Equation Number 9
b. HDS5 Chart Number 1-1
c. Equation for Concrete Pipe Square Edge with Headwall
ii. Beveled Edge (1:1)
1. Notes:
a. Use HY8 Equation Number 6
b. HDS5 Chart Number 3-A
c. Equation for Circular pipe culvert with beveled edge (1:1)
iii. Beveled Edge (1.5:1)
1. Notes:
a. Use HY8 Equation Number 7
b. HDS5 Chart Number 3-B
c. Equation for Circular pipe culvert with beveled edge (1.5:1)
iv. Mitered to Conform to Slope
1. Notes:
a. Use HY8 Equation Number 2
b. HDS5 Chart Number 2-2
c. Equation for Corrugated Metal pipe culvert, Mitered to conform to slope
2. Smooth HDPE
a. Manning’s n (From HDS-5): 0.009-0.015 (use 0.012)
b. Inlet Configurations:
i. Square Edge with Headwall
1. Notes:
a. Use HY8 Equation Number 9
b. HDS5 Chart Number 1-1
c. Equation for Concrete Pipe Square Edge with Headwall
ii. Beveled Edge (1:1)
1. Notes:
a. Use HY8 Equation Number 6
b. HDS5 Chart Number 3-A
c. Equation for Circular pipe culvert with beveled edge (1:1)
iii. Beveled Edge (1.5:1)
1. Notes:
a. Use HY8 Equation Number 7
b. HDS5 Chart Number 3-B
c. Equation for Circular pipe culvert with beveled edge (1.5:1)
iv. Thin Edge Projecting
1. Notes:
a. Use HY8 Equation Number 1
b. HDS5 Chart Number 2-3
c. Equation for Corrugated Metal pipe culvert, Thin edge projecting
v. Mitered to Conform to Slope
1. Notes:
a. Use HY8 Equation Number 2
b. HDS5 Chart Number 2-2
c. Equation for Corrugated Metal pipe culvert, Mitered to conform to slope
3. Corrugated PE
a. Manning’s n (From HDS-5): 0.009-0.015 (use 0.024)
b. Inlet Configurations:
i. Square Edge with Headwall
1. Notes:
a. Use HY8 Equation Number 3
b. HDS5 Chart Number 2-1
c. Equation for Corrugated Metal pipe culvert with Headwall
ii. Beveled Edge (1:1)
1. Notes:
a. Use HY8 Equation Number 6
b. HDS5 Chart Number 3-A
c. Equation for Circular pipe culvert with beveled edge (1:1)
iii. Beveled Edge (1.5:1)
1. Notes:
a. Use HY8 Equation Number 7
b. HDS5 Chart Number 3-B
c. Equation for Circular pipe culvert with beveled edge (1.5:1)
iv. Thin Edge Projecting
1. Notes:
a. Use HY8 Equation Number 1
b. HDS5 Chart Number 2-3
c. Equation for Corrugated Metal pipe culvert, Thin edge projecting
v. Mitered to Conform to Slope
1. Notes:
a. Use HY8 Equation Number 2
b. HDS5 Chart Number 2-2
c. Equation for Corrugated Metal pipe culvert, Mitered to conform to slope


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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