FLOOD01242

• County: Statewide
• Community: State of Colorado
• Stream Name: All
• Title: Hydraulic Design of Improved Inlets for Culverts
• Date: 9/1/1981
• Prepared For: USDOT
• Prepared By: Federal Highway Administration
• Floodplain - Doc Type: Educational/Technical/Reference Information

e CONTENTS (Continued) Pa~e
VU. Design Charts ( Continued)
8 - Headwater Depth for Inle t Control
Rectangular Box Culverts
900 Headwall
Chamfered or Beveled Inlet Edges . . . . . . . . . 13-72
9 - Headwater Depth for Inlet Control
Single Barrel Box Culverts
Skewed Headwalls
Chamfered or Beveled Inlet Edges . . . . . . . . . 13-73
~
10 - Headwater Depth for Inlet Control
.. Rectangular Box Culverts
. Flared Wingwalls 180 to 33.70 and 450
with Beveled Edge at Top of Inlet . . . . . . 13-74
11 - Headwater Depth for Concrete Pipe
Culverts with Inlet Control . . . . . . . . 13-75
12 - Headwater Depth for C.M. Pipe
Culverts with Inlet Control . . . . . . . . 13-76
13 - Headwater Depth for Circular Pipe
e Culverts with Beveled Ring Inlet Control . . . . . 13-77
14 - Throat Control Curve for
Box Culverts
Tapered Inlets . . . . . . . . . . . . 13-78
15 - Face Control Curves for
Box Culverts
Side-Tapered Inlets . . . . . . . . . . . . . 13- 79
16 - Face Control Curves for
Box Culverts
Slope-Tapered Inlets . . . . . 13-80
17 - Headwater Required for Cres t Control 13-81
18 - Throat Control Curves for
Side-Tapered Inlets to Pipe Culvert
. (Circular Sections Only) . . . . . . . . . . . . . 13-82
19 - Face Control Curves for
.. Side-Tapered Inlets to Pipe Culverts
..
(Non-Rectangular Sections Only). . . . . . . . . . 13-83

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