Hydraulic Design of Highway Culverts - DOT On-Line Publications

LIST OF FIGURES
Figure I-1 Typical Concrete Pipe Culvert ............................................................................ 1
Figure I-2 Long Span Culvert.............................................................................................. 1
Figure I-3 Culvert Design Procedure Flowchart.................................................................. 1
Figure I-4 Commonly Used Culvert Shapes ....................................................................... 2
Figure I-5 Precast Concrete Box Culvert ............................................................................ 3
Figure I-6 Corrugated Metal Arch Culvert ........................................................................... 3
Figure I-7 Four Standard Inlet Types .................................................................................. 3
Figure I-8 Entrance Contraction.......................................................................................... 4
Figure I-9 Side-tapered Inlet ...............................................................................................4
Figure I-10 Slope-tapered Inlet ............................................................................................. 4
Figure I-11 Culvert Flowing Full ............................................................................................ 5
Figure I-12 Flow Over a Small Dam...................................................................................... 6
Figure I-13 Typical Inlet Control Flow Condition ................................................................... 7
Figure I-14 Typical Outlet Control Flow Conditions .............................................................. 8
Figure I-15 Culvert Performance Curve ................................................................................ 9
Figure I-16 Risk Analysis Benefit Versus Cost Curve......................................................... 10
Figure II-1 Flood Hydrograph............................................................................................ 12
Figure II-2 Unit Hydrograph Determination Procedure ..................................................... 14
Figure II-3 Linearity and Superposition Concepts............................................................. 15
Figure II-4 Flood Hydrograph Shape Modification ............................................................ 16
Figure II-5 Culvert Location Methods................................................................................ 17
Figure II-6 Cross Section Locations.................................................................................. 18
Figure II-7 Roadway Cross Section and Culvert Length................................................... 19
Figure II-8 Road Profile - Valley Section........................................................................... 20
Figure III-1 Types of Inlet Control ...................................................................................... 24
Figure III-2 Flow Contractions for Various Culvert Inlets ................................................... 26
Figure III-3 Beveled Edges ................................................................................................ 27
Figure III-4 Inlet Control Curves......................................................................................... 28
Figure III-5 Culvert with Depressed Apron and Wingwalls................................................. 29
Figure III-6 Culvert with Inlet Sump.................................................................................... 30
Figure III-7 Types of Outlet Control.................................................................................... 31
Figure III-8 Full Flow Energy and Hydraulic Grade Lines .................................................. 35
Figure III-9 Outlet Control Energy and Hydraulic Grade Lines .......................................... 37
Figure III-10 Roadway Overtopping ..................................................................................... 38
Figure III-11 English Discharge Coefficients for Roadway Overtopping .............................. 39
Figure III-12 Weir Crest Length Determinations for Roadway Overtopping......................... 40
Figure III-13 Outlet Velocity - Inlet Control........................................................................... 41
Figure III-14 Outlet Velocity - Outlet Control ........................................................................ 41
Figure III-15 Performance Curves and Equations for Weirs and Orifices ............................ 42
Figure III-16 Culvert Performance Curve with Roadway Overtopping ................................. 44
Figure III-17 Culvert Design Form........................................................................................ 45
Figure III-18 Inlet Control Nomograph ................................................................................. 47
Figure III-19 Critical Depth Chart ......................................................................................... 48
Figure III-20 Outlet Control Nomograph............................................................................... 49
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