Part 3-Freeboard, Silt Trap and Embankment Design

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This is the 3rd lesson in our series on design of small earth dams. In this lesson, we will look at the design of the freeboard, silt trap and embankments
Freeboard
Minimum freeboard
Gross freeboard
Silt trap
Sediment yield
Silt trap dimensions
Embankment
Crest width
Embankment slopes
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1. Designing the dam/pan freeboard is necessary to prevent overtopping and washing out due to waves
2. Silt traps are designed based on the sediment yield of the project location
3. When designing the embankments of small earth dams/pans, due consideration has to be given to the crest width and embankment slopes
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