FLOOD04208

• County: Statewide
• Basin: Statewide
• Title: Hydraulic Charts for the Selection of Highway Culverts
• Date: 12/1/1965
• Prepared By: Federal Highway Administration
• Floodplain - Doc Type: Educational/Technical/Reference Information

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Hydraulic Charts for the
Selection of Highway Culverts

Hydraulic Engineering Circular No.5

December 1965*

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Prepared by the Hydraulics Branch, Bridge Division, Office of Engineering,
Federal Highway Administration, Washington, D.C. 20590

CONTENTS

Section

Page
5-1
5-1
5-3
5-5
5-11
5-11
5-12
5-12
5-15
5-19
5-19
5-21 5-27
5-29
5-29
5-31 5-43

I Introduction

II Cu 1 vert
A.
B.
C.
D.
E.
F.

Hydraulics
Culverts Flowing with Inlet Control
Culverts Flowing with outlet Control
Computing Depth of Tailwater
Velocity of Culvert Flow
Performance Curves
Inlets and Culvert Capacity

III Procedure for Selection of Culvert Size

IV Inlet-Control Nomographs
A. Instructions for Use
B. Charts 1-7

V Outlet-Control Nomographs
A. Instructions for Use
B. Charts 8-20

VI Appendix
A. Performance Curves
B. Tables
1. Entrance Loss Coefficients
2. Manning's n for Natural Stream
Channels
C. Illustrative Problems

5-45
5-49
5-50
5-51

. Reprinted June 1980

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U.S. DEPARTMENT OF TRANSPORTATION
Federal Highway Administration

For sale by the Superintendent of Documents, U.S. Government Printing Office
Washington, D.C. 20402