Hydraulic Design of Highway Culverts - DOT On-Line Publications

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Chart Arch Culverts 41A, 41B Headwater Depth for Corrugated Metal Arch Culverts with Inlet Control 0.3 ≤ Rise/Span < 0.4 42A, 42B Headwater Depth for Corrugated Metal Arch Culverts with Inlet Control 0.4 ≤ Rise/Span < 0.5 43A, 43B Headwater Depth for Corrugated Metal Arch Culverts with Inlet Control Rise/Span ≥ 0.5 44A, 44B Dimensionless Critical Depth Chart, Corrugated Metal Arches 45A, 45B Head for Corrugated Metal Arch Culverts, Flowing Full with Concrete Bottom, 0.3 ≤ Rise/Span < 0.4 46A, 46B Head for Corrugated Metal Arch Culverts, Flowing Full with Concrete Bottom, 0.4 ≤ Rise/Span < 0.5 47A, 47B Head for Corrugated Metal Arch Culverts, Flowing Full with Concrete Bottom, Rise/Span ≥ 0.5 48A, 48B Head for Corrugated Metal Arch Culverts, Flowing Full with Earth Bottom, 0.3 ≤ Rise/Span < 0.4 49A, 49B Head for Corrugated Metal Arch Culverts, Flowing Full with Earth Bottom, 0.4 ≤ Rise/Span < 0.5 50A, 50B Head for Corrugated Metal Arch Culverts, Flowing Full with Earth Bottom, Rise/Span ≥ 0.5 Long Span Culverts 51A, 51B Circular or Elliptical Structural Plate CMP with Inlet Control 52A, 52B High and Low Profile Structural Plate Arches with Inlet Control 53A, 53B Dimensionless Critical Depth Chart, Structural Plate Ellipse Long Axis Horizontal 54A, 54B Dimensionless Critical Depth Chart, Structural Plate Low and High Profile Arches 220
Chart Circular Tapered Inlets 55A, 55B Throat Control for Side-Tapered Inlets to Pipe Culvert (Circular Section Only) 56A, 56B Face Control for Side-Tapered Inlets to Pipe Culverts (Non-Rectangular Section Only) Rectangular Tapered Inlets 57A, 57B Throat Control for Box Culverts with Tapered Inlets 58A, 58B Face Control for Box Culverts with Side-Tapered Inlets 59A, 59B Face Control for Box Culverts with Slope-Tapered Inlets Design Forms Culvert Design Form Tapered Inlet Design Form Slope-Tapered Inlet With Mitered Face - Design Form Storage Routing Calculation Form Water Surface Profile Computation Form 221
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Publication No. FHWA-NHI-01-020 Sep
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Acknowledgements This document’s
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TABLE OF CONTENTS (Cont.) III. CULV
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TABLE OF CONTENTS (Cont.) F. Safety
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LIST OF FIGURES (Cont.) Figure III-
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LIST OF TABLES Table 1. Factors Inf
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ELhf ELhi ELho ELht ELO ELsf ELSO E
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GLOSSARY (Cont.) p Wetted perimeter
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B. Overview of Culverts A culvert i
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Figure I-9--Side-tapered inlet Figu
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. Partly Full (Free Surface) Flow.
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Table 1--Factors Influencing Culver
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D. Economics The hydraulic design o
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For gaged sites, statistical analys
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volume of the remaining runoff hydr
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Figure II-4--Flood hydrograph shape
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Figure II-6--Cross section location
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. Culvert Length. Important dimensi
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HYDROLOGY Peak Flow Check Flows Tab
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Figure III-1--Types of inlet contro
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Figure II-2--Flow contractions for
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The flow transition zone between th
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Figure III-6--Culvert with Inlet Su
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Condition III-7-A represents the cl
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Outlet control flow conditions can
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2 2 Vu Vd HW o + = TW + + HL (6) 2g
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This approximate method works best
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Figure III-12--Weir Crest Length De
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Critical depth is used when the tai
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4. Add the culvert flow and the roa
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NOTE: If the nomographs are put int
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Figure III-19--Critical Depth Chart
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(1) If the Manning’s n value give
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Example Problem #1 (SI Units) A cul
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Example Problem #2 (SI Units) A new
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Example Problem #3 (SI Units) Desig
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Example Problem #4 (SI Units) An ex
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CHART 51A Figure III-21--Inlet Cont
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2. Outlet Control. a. Partly Full F
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Backwater Calculations From hydraul
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English Units INLET CONTROL: AD 0.
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A. Introduction IV. TAPERED INLETS
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height by more than 10 percent (1.1
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A slope-tapered inlet has three pos
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The mitered face slope-tapered inle
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La is the approximate length of the
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E. Design Methods Figure IV-9--Tape
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a. Complete Design Data. Fill in th
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H 1 i. For FALL < D/4, use side-tap
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3. Example Problems a. Example Prob
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. Example Problem #1 (English Units
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103
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105
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c. Example Problem #2 (SI Units). F
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Conclusions: A side-tapered inlet a
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111
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G. Circular Pipe Culverts 1. Design
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Double barrel slope-tapered inlets
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117
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. Example Problem #3 (English Units
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121
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A. The Routing Concept V. STORAGE R
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C. Application to Culvert Design Fi
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Figure V-6--Peak Flow Reduction Bas
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I + I + ( 2s / ∆t − O) = ( 2s /
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Table 5--Inflow Hydrograph, Example
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Figure V-10—Culvert Design Form f
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Figure V-14--Storage vs. Outflow Re
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Table 5 --Inflow Hydrograph, Exampl
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Figure V-18--Culvert Design Form fo
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Figure V-22--Storage vs. Outflow Re
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A. Introduction VI. SPECIAL CONSIDE
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With minor modifications, the culve
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If headwater and flow consideration
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Figure VI-6--Subatmospheric Pressur
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Figure VI-7--Fish Baffles in Culver
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A popular method of providing for f
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passage of the peak flow. Methods f
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Figure VI-15--Sediment Deposition i
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1. Skewed Barrels. The alignment of
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Skewed inlets slightly reduce the h
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arrel for pipes or the flow per met
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Culvert shapes are as important in
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• Flood plain ordinances or other
Page 189 and 190: Figure VI-28--Guardrail Adjacent to
Page 191 and 192: Both of the above equations are emp
Page 193 and 194: Tables, charts, and formulas are av
Page 195 and 196: 3. Endwalls and Wingwalls. Culvert
Page 197 and 198: 2. Hydraulic Considerations. Long s
Page 199 and 200: conditions. Variations in the concr
Page 201 and 202: REFERENCES (www.fhwa.dot.gov/bridge
Page 203 and 204: 28. "Design Approaches for Stormwat
Page 205 and 206: 54. "Hydraulic Analysis of Pipe-Arc
Page 207 and 208: ADDITIONAL REFERENCES (In Alphabeti
Page 209 and 210: "Risk Analysis For Hydraulic Design
Page 211 and 212: A. Introduction APPENDIX A DESIGN M
Page 213 and 214: Chart No. 1 Shape and Material Circ
Page 215 and 216: NOTE: The rest of this Appendix A i
Page 217 and 218: Figure A-1--Dimensionless Performan
Page 219 and 220: developed for circular and elliptic
Page 221 and 222: APPENDIX B HYDRAULIC RESISTANCE OF
Page 223 and 224: D. Corrugated Metal Culverts The hy
Page 225 and 226: Curves are shown for 2-2/3 by 1/2 i
Page 227 and 228: F. Spiral Rib Pipe Spiral rib pipe
Page 229 and 230: APPENDIX C CULVERT DESIGN OPTIMIZAT
Page 231 and 232: C. Inlet Control Performance Curves
Page 233 and 234: Figure C-4--Optimization of Perform
Page 235 and 236: E. Tapered Inlet Face Control Perfo
Page 237 and 238: APPENDIX D DESIGN CHARTS, TABLES, A
Page 239: Chart Corrugated Metal Box Culverts
Page 243 and 244: Table 12--Entrance Loss Coefficient
Page 245 and 246: CHART 1B 225
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