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Hydraulics Engineering Publications


This is an archived publication. It may be useful for researchers doing further work in this area as well as those developing improved testing and design procedures and is included because of its historical value

Title: Hydraulic Design of Energy Dissipators for Culverts and Channels

Description: Interception and concentration of overland flow and constriction of natural waterways by culverts and channels can result in increased channel erosion and scour potential. To protect roadways and adjacent areas from this erosion and scour, it is sometimes necessary to employ energy dissipation measures. Hydraulic Design of Energy Dissipators for Culverts and Channels, Hydraulic Engineering Circular No. 14 (HEC-14), provides design information for analyzing energy dissipation problems at culverts and in open channels. The first five chapters of the circular provide general information to support the remaining design chapters, including discussions of erosion and scour hazards associated with flow constriction and acceleration and general design concepts for erosion and scour protection. Design Chapters 6-11 cover the general types of dissipators: hydraulic jumps, forced hydraulic jumps, impact, drop structures, stilling wells, and riprap. The basic design concept presented in Chapter 1 is illustrated in Chapter 12. In this chapter, the different dissipator types are compared using design problems.

FHWA Publication Number: EPD-86-110

Publication Year: 1983

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Updated: 09/06/2013

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