Ogee Spillway Designxls Install !exclusive!

coordinate pairs used for CAD drafting and structural modeling. 5. Troubleshooting Common Installation Errors

An ogee spillway features an S-shaped (ogee) profile that mirrors the lower nappe of a ventilated water sheet flowing over a sharp-crested weir. Why Engineers Use Excel for Ogee Design : Instantly generates coordinates for both the upstream and downstream curves. Rapid Iteration : Allows users to tweak the design head ( Hdcap H sub d ) and instantly see updates to discharge rates.

Enter a range of heads (0.2 H_d to 1.5 H_d). The sheet auto-populates ( Q ) vs ( H ). Export this table for reservoir routing.

For a vertical upstream face, the downstream profile equation generally follows the power law: ogee spillway designxls install

The angle of the spillway chute downstream of the ogee curve. 4. Ogee Profile Calculation Formula

To dive deeper into specific site conditions, would you like to explore , or should we look into integrating energy dissipator calculations (stilling basins) next? Share public link

Use the standard discharge formula to find the required effective length of the crest ( Lecap L sub e coordinate pairs used for CAD drafting and structural

Set up a clean data table layout so the final coordinates can be copied directly into AutoCAD or Civil 3D via a script or command line string ( PLINE ). Best Practices for Spillway Spreadsheet Design

Because this is an Excel file, not a traditional Windows program, the "install" process is unique. Follow these 8 steps carefully.

Most advanced .xls files use Visual Basic for Applications (VBA) to perform iterative solving (e.g., finding the exact crest shape) or to generate rating curves. Upon opening the file in Excel (2016 or later), a security warning bar will appear. The user must: Why Engineers Use Excel for Ogee Design :

): Adjusting for head, approach depth, and downstream conditions. Generating coordinates for the upstream and downstream curves.

value from standard USBR (United States Bureau of Reclamation) design curves. 2. Effective Crest Length ( Lecap L sub e

An is a critical hydraulic structure featuring an S-shaped (ogee) profile designed to mirror the naturally forming lower nappe of a fully ventilated fluid jet flowing over a sharp-crested weir. By matching this natural curvature, the spilling water remains in constant contact with the concrete structure. This completely eliminates negative pressures along the face, eliminating the risk of destructive cavitation , and allows the structure to discharge up to 25% more volume than a standard broad-crested weir at the equivalent design head.