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Straight drop structures.

Variables from the figure

q — Design Discharge
y_c — Critical depth
h₀ — Drop from crest to stilling basin floor
y₁ — Pool depth under the nappe
y₂ — Depth of flow at the tow of the nappe or the beginning of the hydraulic jump
y₃ — Tailwater depth sequent to y2
L₁ — Distance from the headwall to the point where the surface of the upper nappe strikes the stilling basin floor
L₂ — Distance from the upstream face of the floor blocks to the end of the stilling basin

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	Date/Time	Thumbnail	Dimensions	User	Comment
current	★ Approved revision 16:02, 3 November 2007		560 × 219 (16 KB)	Eshaw (talk \| contribs)

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