FLOOD00847

• County: Statewide
• Community: State of Colorado
• Title: Hydraulic Design of Improved Inlets for Culverts
• Date: 8/1/1972
• Prepared For: State of Colorado
• Prepared By: USDOT
• Floodplain - Doc Type: Educational/Technical/Reference Information

CONTENTS (Continued) Page
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VII. Design Charts ( Continued)
8 - Headwater Depth for Inlet Control
Rectangular Box Culverts
900 Headwall
Chamfered or Beveled Inlet Edges . . . . . . . . . 13-72
9 - Headwater Depth for Inlet Control
Single Barrel Box Culverts
Skewed Headwal1s
Chamfered or Beveled Inlet Edges . . . . . . . . 13-73
10 - Headwater Depth for Inlet Control
Rectangular Box Culverts
o 0 0
Flared Wingwalls 18 to 33.7 and 45
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 Crest 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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