: To prevent downstream erosion, terminal structures like USBR Stilling Basin Type II are often paired with ogee spillways to manage high-velocity flows. Available Design Tools (XLS/Spreadsheets)
Typically split into an upstream quadrant and a downstream quadrant. The shape is defined relative to the design head ( Hdcap H sub d ogee spillway designxls better
Assume an initial discharge coefficient, ( C_d = 2.30 ). Solve for ( H_e \approx 15.43 ) m. : To prevent downstream erosion, terminal structures like
An ogee spillway is the gold standard in hydraulic engineering for releasing floodwaters safely. Designing one requires intense mathematical precision. While traditional engineers used manual calculations or complex software, using an optimized (Excel) spreadsheet provides a faster, highly visual, and remarkably accurate alternative. What is an Ogee Spillway? Solve for ( H_e \approx 15
) : Calculated by adjusting the net length for the presence of piers and abutments using the formula:
: At the design head, surface pressure is approximately atmospheric. Operating above the design head creates sub-atmospheric (negative) pressure, which increases discharge but risks cavitation.