Hydraulic Design of Highway Culverts - DOT On-Line Publications

TABLE OF CONTENTS (Cont.)
III. CULVERT DESIGN
A. Culvert Flow............................................................................................................. 23
1. General .............................................................................................................. 23
2. Types of Control................................................................................................. 23
3. Roadway Overtopping ....................................................................................... 38
4. Outlet Velocity.................................................................................................... 40
B. Performance Curves................................................................................................ 42
1. Inlet Control........................................................................................................ 43
2. Outlet Control..................................................................................................... 43
3. Roadway Overtopping ....................................................................................... 43
C. Culvert Design Method............................................................................................ 44
1. Culvert Design Form .......................................................................................... 44
2. Inlet Control........................................................................................................ 45
3. Outlet Control..................................................................................................... 46
4. Evaluation of Results ......................................................................................... 50
5. Example Problems............................................................................................. 51
D. Design Methods for Culverts Without Design Charts .............................................. 68
1. Inlet Control........................................................................................................ 68
2. Outlet Control..................................................................................................... 70
3. Discussion of Results......................................................................................... 70
4. Example Problem............................................................................................... 70
IV. TAPERED INLETS
A. Introduction.............................................................................................................. 79
B. Descriptions of Tapered Inlets................................................................................. 80
1. Side-tapered ...................................................................................................... 80
2. Slope-tapered .................................................................................................... 82
C. Hydraulics................................................................................................................ 85
1. Inlet Control........................................................................................................ 85
2. Outlet Control..................................................................................................... 86
3. Outlet Velocity.................................................................................................... 86
D. Performance Curves ............................................................................................... 87
E. Design Methods....................................................................................................... 89
1. Preliminary Culvert Sizing.................................................................................. 90
2. Culvert Barrel Design......................................................................................... 90
3. Tapered Inlet Design.......................................................................................... 90
4. Dimensional Limitations ..................................................................................... 92
F. Rectangular (Box) Culverts...................................................................................... 93
1. Design Procedures ............................................................................................ 93
2. Multiple Barrel Designs ...................................................................................... 94
3. Example Problems............................................................................................. 95
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