Broad-Crested Weirs: Difference between revisions
From ASDSO Dam Safety Toolbox
No edit summary |
No edit summary |
||
| Line 2: | Line 2: | ||
[[Category:Spillway Control Structures]] | [[Category:Spillway Control Structures]] | ||
---- | ---- | ||
“A weir is a notch of regular form through which water flows. The structure containing the notch is also called a weir. The edge over which the water flows is the crest. The two basic types of [[weirs]] are sharp-crested weirs and broad-crested weirs. Most hydraulic structures have broad-crested weirs. The crest is horizontal | |||
and long in the direction of flow so flow maintains contact with the crest rather than springing clear. The level crest in an earthen auxiliary spillway of a flood control dam is an example of a broad-crested weir."<ref name="NRCS650">[[National Engineering Handbook: Chapter 3 - Hydraulics|National Engineering Handbook, Part 650, Chapter 3 - Hydraulics, NRCS, 2021]]</ref> | |||
<!-- For information on notation for in text citations visit https://www.mediawiki.org/wiki/Help:Cite Or simply enclose the citation as shown <ref> citation </ref> in the location of the in text mention. Citations will automatically populate below--> | <!-- For information on notation for in text citations visit https://www.mediawiki.org/wiki/Help:Cite Or simply enclose the citation as shown <ref> citation </ref> in the location of the in text mention. Citations will automatically populate below--> | ||
Revision as of 21:17, 13 December 2022
“A weir is a notch of regular form through which water flows. The structure containing the notch is also called a weir. The edge over which the water flows is the crest. The two basic types of weirs are sharp-crested weirs and broad-crested weirs. Most hydraulic structures have broad-crested weirs. The crest is horizontal and long in the direction of flow so flow maintains contact with the crest rather than springing clear. The level crest in an earthen auxiliary spillway of a flood control dam is an example of a broad-crested weir."[1]
Citations:
Revision ID: 5442
Revision Date: 12/13/2022