Transcription of Chapter 11 ENERGY DISSIPATORS
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Chapter 11 ENERGY DISSIPATORS
Chapter 11. ENERGY DISSIPATORS . SOUTH DAKOTA DRAINAGE MANUAL. October 2011. South Dakota Drainage Manual ENERGY DISSIPATORS Table of Contents Section Page INTRODUCTION ..11-1. Overview ..11-1. Definition ..11-1. HEC 14 ..11-1. TYPE SELECTION ..11-2. General ..11-2. SDDOT Practices ..11-2. Guidelines ..11-2. DESIGN Ice Buildup ..11-5. Debris Control ..11-5. Flood Frequency ..11-5. Maximum Culvert Exit Velocity ..11-5. Tailwater Relationship ..11-6. Cost ..11-6. Weep DESIGN PROCEDURE ..11-7. DESIGN EXAMPLES ..11-11. RIPRAP APRONS ..11-12. Apron Use Independent of Other ENERGY DISSIPATORS ..11-12. Apron Use with Other ENERGY DISSIPATORS .
11.3.1 Ice Buildup If ice buildup is a factor, it can be mitigated by: • sizing the structure to not obstruct the winter low flow, and • using external dissipators. 11.3.2 Debris Control Debris control can be designed using HEC 9 (Reference (2)) and should be considered: • where clean-out access is limited, and
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