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H140
Open Channel Hydraulics III Sharp-crested Weirs

Harlan H. Bengtson, Ph.D., PE

A weir, widely used for measurement of open channel flow rate, consists of an obstruction in the path of flow. Water rises above the obstruction to flow over it, and the height of water above the obstruction can be correlated with the flow rate. The top of the weir, over which the liquid flows, is called the crest of the weir. Two commonly used types of weir are the sharp-crested weir and broad-crested weir. The sharp-crested weir will be covered in this course. The emphasis will be on calculations used for the various types of sharp-crested weirs, but there will also be information on guidelines for installation and use of sharp-crested weirs.

This course includes a multiple-choice quiz at the end, which is designed to enhance the understanding of the course materials.


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