New Equations for Energy Dissipation for Spillways with Slope of 30 Degrees and Height of 0.305m

Stepped spillways are current method of choice for safe discharge flood water due to their inherent ability employ stepping nature safely dissipate substantial energy. Hence, the authors in this study aim provide design engineers new models estimating energy dissipation a stepped spillway with an equal step heights and widths 0.3 m. Many researchers have investigated both hydraulic geometric relationships varying sizes that resulted significant dissipation, but quite few them has conducted researches on m, thereby leading limited information at disposal involved The obtained more than 500 measured data from Engineering Research Center Colorado State University Fort Collins, work published April, 2002 about 300 had complete were re-analyzed used develop model govern nappe skimming flows over wide range operating conditions. This was formulated terms number steps flow critical depth using multiple regression analysis matrix method. developed later calibrated yielded very high coefficients correlation ranged 0.8808 0.9982, which upon verification gave good predictions between estimated data. Results showed rate along increases increasing numbers steps, decreases discharge.