Many junior engineers forget that ogee crests have a complex upstream quadrant (Elliptical or Circular transitions). Manual scaling from a scanned PDF graph introduces "digitization error."
) based on whether the upstream energy head is above or below the design head. It should account for values ranging from approximately in free-flow to in submerged conditions. Profile Precision ogee spillway designxls better
Deriving the between the crest curve and the downstream slope requires iterative solving. Doing this by hand takes 45 minutes per iteration. Using the Ogee Spillway DesignXLS , it takes 2 seconds. Many junior engineers forget that ogee crests have
The design focuses on creating a profile that matches the lower nappe of a fully ventilated weir. : is discharge, is the discharge coefficient, Lecap L sub e is the effective length, and Hecap H sub e is the head over the crest. Discharge Coefficient ( Profile Precision Deriving the between the crest curve
To make this "Better" than a standard download, implement these three features: