Outlet Structure Hydraulics

by Ronald L. Rossmiller, (M.ASCE), Iowa State Univ at Ames, Ames, IA, USA,

Document Type: Proceeding Paper

Part of: Water Forum '86: World Water Issues in Evolution


Current detention basin design procedure is to design the outlet structure for two or more return periods. This is sometimes done by combining weirs and/or orifices of various sizes and shapes immediately in front of a pipe or box culvert. Tests on four plexiglas models have produced some preliminary equations which predict the calibrated flows within a reasonable range of accuracy. Recommendations are made where more research is needed.

Subject Headings: Hydraulic structures | Model accuracy | Hydraulic design | Hydraulic models | Structural analysis | Drop structures | Pipelines | Calibration

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