Whats the definition of weir?
: a fence or enclosure set in a waterway for taking fish. : a dam in a stream or river to raise the water level or divert its flow.
What is the purpose of a weir?
A weir is a small dam built across a body of water, such as a river. We use them to help control the flow of water. Weirs can help raise the water level so that boats can pass through, and they can also reduce the flow of water to prevent flooding.
What are the types of weir?
TYPES OF WEIRS
- Sharp crested weir.
- Broad crested weir (or broad-crested weir)
- Crump weir (named after the designer)
- Needle dam.
- Proportional weir.
- Combination weir.
- MF weir.
- V-notch weir.
What is the main difference between a dam and a weir?
The only main difference between dam and weir is that dam can store water comparatively for longer duration than weir and the dam is at more height than the weir.
What is the synonym of weir?
Synonyms & Near Synonyms for weir. barrage, milldam, stank.
Where did the word weir come from?
Etymology. From Middle English were, from Old English wer, from werian (“to dam up”), from Proto-West Germanic *warjan, from Proto-Germanic *warjaną, from Proto-Indo-European *wer- (“to cover”); Cognate with Old Norse ver (“station for fishing”), Sanskrit वृणोति (vṛṇóti). Related to warranty.
What are some disadvantages of a weir?
Disadvantages of Weirs
- Spacious Upstream Weir Pool Required.
- Cold Weather Can Compromise Readings.
- Discharge Must Be Free-Spilling.
- Weir Maintenance Is Extensive.
- Weirs and Flumes From Tracom.
What are the main components of weir?
The component parts are as follows:
- Body of weir.
- Upstream Apron.
- Upstream curtain wall.
- Downstream apron.
- Downstream curtain wall.
- Crest.
- Shutter.
What is the standard shape of weir?
Rectangular
Explanation: Rectangular is the standard shape of a weir.
Is a weir a spillway?
In a weir the water overflows the weir, but in a dam the water overflows through a special place called a spillway. Weirs have traditionally been used to create mill ponds. They are also used to prevent flooding, measure discharge, and help render a river navigable.
How do you escape a weir?
Water falls over the weir, drives to the bottom of the riverbed, bounces back up and then rejoins the downward flow at the top. These circulating stoppers can be aggressive and impossible to escape. You can try to swim down or sideways to and exit the circuit, and then rise to the surface.
Are strange and weird synonyms?
Synonyms of ‘weird’ in American English
- strange.
- bizarre.
- creepy (informal)
- eerie.
- freakish.
- mysterious.
- odd.
- queer (old-fashioned)
Is weir a Viking name?
Weir is a Scottish name, but of Norman origins. The place-name Vere in Normandy, from the Norse word ver or “dam,” gave rise to the powerful de Vere family who came to England and held the title of Earl of Oxford from 1141 to 1703.
What are advantages of weirs?
Benefits and Drawbacks
Weirs can be built to measure water flow rate, to alter the flow of rivers, or to prevent flooding. Additionally, small-size weirs can be used in large hydropower developments as a way to mitigate potential harm that may come about as a result of dam development.
How are weirs classified?
Weirs may be classified in many ways. They can be classified as rectangular, triangular and trapezoidal weirs based on the geometry of flow section. They can be classified into sharp crested and broad-crested weirs based on the sharpness of the crest.
How do you create a weir?
Criteria for Proper Weir Design
- The weir should consist of a thin plate 1/8 to 1/4 inch (3 to 6 mm) thick with a straight edge or a thicker plate with downstream chamfered edge.
- The upstream face of the weir should be smooth and perpendicular to the axis of the channel in both horizontal and vertical directions.
What is pond level in weir?
(vii) Pond Level:
The weir stores water on its upstream side in front of a head regulator to create a still pond. The canal gets water from this pond through the head regulator . Hence, it is essential to keep the level of the pond some 0.75 to 1 m above the FSL of the canal to provide sufficient working head.
Is a weir a dam?
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. Weirs allow water to pool behind them, while allowing water to flow steadily over top of the weir.
Who invented weirs?
The founding of Weir
In 1871, two brothers, George and James Weir, founded the engineering firm of G & J Weir, joining the booming industrial scene in the west of Scotland.
Can you swim in a weir?
Weirs: Weirs are generally to be avoided – some types in particular (box weirs) are fatal to trapped swimmers and kayakers. In some places you will see people swimming happily upstream in the pools formed by weirs (their purpose is to deepen the water), that’s probably safe in low flows.
Can you cross a weir?
Never play on or near a weir. They may look pretty, but under the surface the water is extremely strong and violent, and can trap you with no escape.
What is the British word for a crazy person?
Loony/Loopy – A mad or crazy person.
What is the longest word in the English language?
Pneumonoultramicroscopicsilicovolcanoconiosis
Pneumonoultramicroscopicsilicovolcanoconiosis is the longest word entered in the most trusted English dictionaries.
Is weir Scottish or Irish?
Weir is a Scottish name, but of Norman origins. The place-name Vere in Normandy, from the Norse word ver or “dam,” gave rise to the powerful de Vere family who came to England and held the title of Earl of Oxford from 1141 to 1703. A branch of these de Veres were to be found in Scotland from 1165.
What clan does weir belong to?
Although a Lowland family, the Weirs are recognized as a sept of clan Buchannan, clan MacNaughton, and clan MacFarlane through marriages and alliances. A brief history of the Weir family states, Ralph de Vere, b. c. 1150.