FLOOD01169

• County: Statewide
• Community: State of Colorado
• Stream Name: All
• Title: Design Guidelines and Criteria Channels and Hydraulic Structures on Sandy Soil
• Date: 6/1/1981
• Prepared For: UDFCD
• Prepared By: Simons Li & Associates Inc.
• Floodplain - Doc Type: Educational/Technical/Reference Information

Figure 5-1.

Figure 5-2.

Figure 5-3.

Figure 5-4.

Figure 5-5.

Figure 5-6.

Figure 5-7.

Figure 5-8.

Figure 5-9.

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LIST OF FIGURES (continued)

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Page

Physical layout of design example.

77

Sediment size distribution (design example).

.

78

Erosion process of headcutting

85

Effect of grade control structures

86

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Typical channel bank protections with riprap

92

Riprap for bank protection

.100

Bank and bed riprap protection

.102

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Width of a drop structure.

.112

Definition sketch for a vertical drop
structure with vertical side walls

.113

Figure 5-10. Definition sketch for a sloped drop structure.

.118

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Figure 5-11. Crest wall on riprap drop structures

.120

Figure 5-12. Cross section of natural channel

. 122

.124

Figure 5-13. Design example - main channel.

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Figure 5-14. Design example - overbank area

.128

Figure 5-15. Design example - sloped riprap drop structure.

.128

Figure 5-16. Type A - entrance with headwall,
wingwa11s and toe wall

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.133

Figure 5-17. Type B - entrance with headwall and toe wall

.134

Figure 5-18. Type C - entrance with sloped transition

.135

.

.137

Figure 5-19. Channel cross section.

Figure 5-20. Roadway cross section.

.137

.137

Figure 5-2l. Twin box culvert layout.

.

.139

Figure 5-22. Design example - culvert entrance.

xi

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