Ogee Spillway Designxls Install [better] Direct
The downstream profile of the crest is generally defined by the power law equation:
Do not assume it works simply because it opened. Enter standard test values:
Look for a .zip folder named Ogee_DesignXLS_Package.zip .
Manually solving for these coordinates is prone to rounding errors. The and Bureau of Reclamation provide standard profiles (WES standard shape), but translating those into precise X-Y coordinates for CAD requires a robust solver. ogee spillway designxls install
). These coordinates defined the "lower nappe"—the perfect S-curve where the water would glide over the dam without ever losing contact with the surface. Step 3: The Refinement
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However, designing one from scratch involves solving tedious polynomial equations, checking discharge coefficients, and iterating over crest shapes. Enter —a specialized, Excel-based spreadsheet tool that automates these complex calculations. The downstream profile of the crest is generally
), but the spillway must also be safe for the maximum probable flood (MPF).
: Download the official toolkit archive and extract the file to a dedicated engineering project directory.
Stop fighting the formulas and start designing. Whether you're working on a small diversion dam or a major reservoir, let the spreadsheet do the heavy lifting. The and Bureau of Reclamation provide standard profiles
: Write the Excel formula referenced to your Hdcap H sub d cell. For example, if is in cell A10 and Hdcap H sub d is in cell B4 , enter: =-0.5 * (A10^1.85) / (B4^0.85)
: The Water Structures Design Spreadsheets provided by The Engineering Community offer a suite of tools for hydraulic checks and stability analysis.
: Plots the exact physical curve of the spillway crest directly within Excel. 2. Setting Up Your Spillway Excel Worksheet