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Uncontrolled Spillways: Difference between revisions

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==Types of Uncontrolled Spillways==
==Types of Uncontrolled Spillways==
*[[Chute Spillways | Chute (Open Channel or Trough) Spillways]]
*[[Chute Spillways]]
*[[Drop Spillways | Drop Inlet Spillways]]
*[[Drop Spillways | Drop Inlet Spillways]]
*[[Side-Channel Spillways | Double Side-Channel (Bathtub) and Side-Channel Spillways]]
*[[Side-Channel Spillways]]
*[[Free Overfall Spillways | Free Overfall Spillway including Ogee Crest, Various Shaped Weirs, and Straight Drop Control Structures]]
*[[Free Overfall Spillways]]


==Best Practices Resources==
==Best Practices Resources==

Revision as of 22:57, 2 December 2022


A stepped chute spillway in England. (Wikipedia)

“A controlled crest is one that includes gates which are used to control the flow; the uncontrolled crest is one unencumbered by gates”.[1]

“Common to all uncontrolled spillways that are not integral with a concrete dam (i.e., located away from the dam on or through abutments, or on or through reservoir rim) is that existing topography must provide adequate space without excessive excavation. Also, the existing topography must allow appropriate orientation (alignment of the spillway between the reservoir and downstream river or stream) of the conveyance feature and terminal structure. Additionally, economics will come into play for all uncontrolled spillways”.[2]

Types of Uncontrolled Spillways

Best Practices Resources

Hydraulic Design of Spillways (EM 1110-2-1603) (U.S. Army Corps of Engineers)

Design Standards No. 14: Appurtenant Structures for Dams (Ch. 3: General Spillway Design Considerations) (Bureau of Reclamation

National Engineering Handbook: Chapter 50 - Earth Spillway Design (Natural Resources Conservation Service)

Trainings

On-Demand Webinar: Introduction to Earth Spillway Design and Evaluation

On-Demand Webinar: Dam Safety with 3D Weirs

On-Demand Webinar: Hydraulic Design of Labyrinth Weirs



Citations:


Revision ID: 4842
Revision Date: 12/02/2022