Hydraulic Design of Highway Culverts - DOT On-Line Publications

TABLE OF CONTENTS
Documentation......................................................................................................................... i
Acknowledgements................................................................................................................. ii
Metric Conversion Factors ......................................................................................................iii
Table of Contents.................................................................................................................... v
List of Figures .........................................................................................................................ix
List of Tables..........................................................................................................................xii
Glossary................................................................................................................................xiii
I. INTRODUCTION
A. General...................................................................................................................... 1
B. Overview of Culverts ................................................................................................. 2
1. Shapes................................................................................................................. 2
2. Materials .............................................................................................................. 2
3. Inlets .................................................................................................................... 2
C. Culvert Hydraulics ..................................................................................................... 5
1. Flow Conditions ................................................................................................... 5
2. Types of Flow Control .......................................................................................... 7
3 Headwater............................................................................................................ 9
4. Tailwater .............................................................................................................. 9
5. Outlet Velocity...................................................................................................... 9
6. Performance Curves ............................................................................................9
D. Economics............................................................................................................... 10
1. Benefits and Costs............................................................................................. 10
2. Analysis.............................................................................................................. 10
II. DESIGN CONSIDERATIONS
A. Hydrology ................................................................................................................ 11
1. General .............................................................................................................. 11
2. Peak Design Flow .............................................................................................. 11
3 Check Flows ...................................................................................................... 13
4. Hydrographs ...................................................................................................... 13
5. Basics of Storage Routing ................................................................................. 15
B. Site Data.................................................................................................................. 16
1. General .............................................................................................................. 16
2. Culvert Location ................................................................................................. 16
3 Waterway Data .................................................................................................. 17
4. Roadway Data ................................................................................................... 19
5. Design Headwater ............................................................................................. 20
C. Summary of Data Needs ......................................................................................... 21
v