Question
Download Solution PDFHow many types of weirs are there based on the shape of the crest?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFClassification of weir based on shape of crest:
1. Sharp crested weir: The crest shape of the weir is very sharp. It is most widely used weir.
2. Broad-crested weir: These are constructed only in a rectangular shape and are suitable for the larger flows.
3. Narrow-crested weir: It is similar to rectangular weir with a narrow shaped crest at the top. The discharge over the narrow crested weir is similar to discharge over the rectangular weir.
4. Ogee-shaped weir: Generally ogee shaped weirs are provided for the spillway of a storage dam. The crest of the ogee weir is slightly risen and falls into parabolic form.
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