Weir - Wikipedia
A weir / w ɪər / or low-head dam is a barrier across the width of a river that alters the flow characteristics of water and usually results in a change in the height of the river level. Weirs are also used to control the flow of water for outlets of lakes, ponds, and reservoirs.
Types of Weirs and Flow Over Weirs – theconstructor.org
What is a weir? 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. Types of Weirs:
What is a Weir? - Practical Engineering
2019年3月9日 · A weir is a small dam built across a river to control the upstream water level. Weirs have been used for ages to control the flow of water in streams, rivers, and other water bodies. Unlike large dams which create reservoirs, the goal of building a weir across a river isn’t to create storage, but only to gain some control over the water level.
Weirs: Types, Functions, and Design Considerations
2024年6月26日 · What is a weir? A weir is a structure built across an open channel, such as a river, to control or measure the flow of water. What are the main types of weirs? Weirs are classified based on their shape, including rectangular, …
Weirs: Types and Classification Weirs - Building and Construction
2024年1月3日 · Dive into the world of hydraulic engineering with our in-depth blog post on weir. Explore various types, from rectangular to ogee-shaped weirs, and gain educational insights into flow dynamics. Discover practical applications and interdisciplinary connections in this concise exploration of weir dynamics.
Weir-Definition, Types, Functions, Advantages and Disadvantages
2024年2月9日 · A weir is a hydraulic structure commonly used in water management and engineering to control the flow of rivers, streams, or channels. It is designed to alter the water level and regulate the discharge of water by creating a barrier across the watercourse.
Design of Weir | Weir Design Manual Calculations and Engineering
2017年8月30日 · Among these diverging structures weir is the most commonly used structure, because of its simple design and operation. Different types of weir can be used as diverging structures some of them are given below: Also See: Components of Weir. Sharp crested weir; Broad crested weir; Ogee weir; Tyrolean weir; weir with lateral intake etc
WHAT IS WEIR? | FUNCTIONS OF A WEIR | TYPES OF WEIRS
A weir, also known as a low-head dam is a small overflow-type dam commonly used to raise the level of a river or stream. Weirs have traditionally been used to create mill ponds in such places. Water flows over the top of a weir, although some weirs have sluice gates, which release water at a level below the top of the weir.
Weirs - Civil Engineering Portal
2023年3月28日 · Weir is defined as a barrier over which the water flows in an open channel. The edge or surface over which the water flows is called the crest. The overflowing sheet of water is the nappe. If the nappe discharges into the air, the weir has free discharge. If the discharge is partly under water, the weir is submerged or drowned. Types of Weirs.
Weirs are generally used as measuring and hydraulic control devices. Emergency spillways in which critical depth occurs and overflow-type roadway crossings of channels are the most common applications of weirs. Channel drop structures and certain storm drain inlets may also be analyzed as weirs.
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