Question

Which one of the following equations represents the downstream curve of the "Ogee" spillway with vertical upstream face (where x and y are the coordinates of crest profile measured from the apex of the crest, and H is the design head)?

• A. $x=2H^{1.85}{y}^{0.85}$
• B. $x^{1.85}=2H^{0.85}y$
• C. $x^{0.85}=2H^{1.85}y$
• D. $x=2H^{0.85}{y}^{1.85}$

Answer 1

The correct option is B $x^{1.85}=2H^{0.85}y$

Equation of d/s profile for Ogee spillway -
$x^{1.85}=2H^{0.85}y$