Ogee Spillway Designxls Better !exclusive! -

If you’ve ever designed a concrete gravity dam, you know the Ogee spillway is both a thing of beauty and a hydraulic headache. Getting that perfect “S” curve—where the lower nappe of the waterfall just kisses the crest—requires iteration.

Spreadsheets like SPILLWAY.XLS allow engineers to see how discharge capacity ( ) changes with head ( ogee spillway designxls better

You pull out your copy of USBR’s Design of Small Dams or EM 1110-2-1603 , flip to the discharge coefficient tables, and start punching numbers into a generic Excel sheet. You spend hours debugging lookup tables for the upstream face slope, fiddling with unit conversions, and praying you didn’t mis-type the design head (H(_d)) relationship. If you’ve ever designed a concrete gravity dam,