WEIRS AND ITS CLASSIFICATION

 



A weir is a concrete or masonry structure which is constructed across the open channel (such as a river) to change its water flow characteristics.

Weirs are constructed as an obstruction to flow of water.

These are commonly used to measure the volumetric rate of water flow, prevent flooding and make rivers navigable

A weir is a small barrier built across a stream or river to raise the water level slightly on the upstream side; essentially a small-scale dam.

A weir is used to hold water. This water can be used in towns, homes, industry, or irrigation.

Thus, weirs are partially classified as rectangular, trapezoidal, triangular, etc.

In the case of sharp weirs, the triangular weir is also called a V-notch weir, and one kind of trapezoidal weir is the Cipoletti weir.

Weirs can help raise the water level so that boats can pass through

Triangular. One of the most common weir types is the triangular type, also known as a V-notch weir.

Weirs are called sharp-crested if their crests are constructed of thin metal plates.

 Broad-crested if they are made of wide timber or concrete.

Weirs are hydraulic control structures usually designed and constructed across a channel or a stream to control and accurately measure the over passing flow rates.

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