), which accounts for flow contractions caused by piers and abutments. The formula used is typically:
The following steps are typically automated in high-quality design spreadsheets: Determine Initial Design Head ( cap H sub e Assuming an initial discharge coefficient ( ) and using the net crest length ( ), calculate a trial cap H sub e using the formula Calculate Effective Crest Length ( cap L sub e Adjust the net length for pier and abutment contractions: ogee spillway designxls better
An ogee spillway is a type of overflow spillway that consists of a curved, smooth, and continuous surface, typically with a crest shape that follows an ogee curve. The ogee curve is a mathematical curve that provides a smooth, flowing shape, allowing water to flow freely over the spillway crest without separation or cavitation. The design of an ogee spillway involves determining the crest shape, spillway width, and other geometric parameters to ensure safe and efficient operation. ), which accounts for flow contractions caused by
Operational issues and safety