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Halcrow Group Limited
Halcrow Group Limited was a multinational engineering consultancy company, based in the United Kingdom Halcrow was one of the UK's largest consultancies, with origins stretching back to 1868. The UK-based consultancy specialised in the provision of planning, design and management services for infrastructure development worldwide. With interests in transportation, water, maritime and property, the company undertook commissions in over 70 countries from a network of more than 90 offices. In 2011, the company was acquired by US firm CH2M Hill, and in 2013 it was announced that the Halcrow brand would eventually be discontinued. The parent subsequently (2015) rebranded the whole group to CH2M. Two years later, in December 2017, CH2M was acquired by Jacobs Engineering Group. History The company was founded in 1868 by civil engineer Thomas Meik, and originally bore his name, and later those of his sons, Patrick and Charles. It worked extensively on port, maritime and railway pro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Subsidiary
A subsidiary, subsidiary company or daughter company is a company owned or controlled by another company, which is called the parent company or holding company. Two or more subsidiaries that either belong to the same parent company or having a same management being substantially controlled by same entity/group are called sister companies. The subsidiary can be a company (usually with limited liability) and may be a government- or state-owned enterprise. They are a common feature of modern business life, and most multinational corporations organize their operations in this way. Examples of holding companies are Berkshire Hathaway, Jefferies Financial Group, The Walt Disney Company, Warner Bros. Discovery, or Citigroup; as well as more focused companies such as IBM, Xerox, and Microsoft. These, and others, organize their businesses into national and functional subsidiaries, often with multiple levels of subsidiaries. Details Subsidiaries are separate, distinct legal ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
North Of England
Northern England, also known as the North of England, the North Country, or simply the North, is the northern area of England. It broadly corresponds to the former borders of Angle Northumbria, the Anglo-Scandinavian Kingdom of Jorvik, and the Celt Britonic Yr Hen Ogledd Kingdoms. The common governmental definition of the North is a grouping of three statistical regions: the North East, the North West, and Yorkshire and the Humber. These had a combined population of 14.9 million at the 2011 census, an area of and 17 cities. Northern England is culturally and economically distinct from both the Midlands and the South of England. The area's northern boundary is the border with Scotland, its western the border with Wales, and its eastern the North Sea; there are varying interpretations of where the southern border with the Midlands lies culturally; the Midlands is often also split by closeness to the North and the South. Many Industrial Revolution innovations began i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Clywedog Dam
The Clywedog Reservoir ( cy, Llyn Clywedog) is a reservoir near Llanidloes, Wales on the head-waters of the River Severn. The construction of the reservoir was enabled by an Act of Parliament which asserted that ''"At certain times the flow of water in the river is inadequate ... unless that flow were regulated so as to ensure that at those times water in addition to the natural flow will flow down the river."'' Purpose Its primary purpose was to regulate the flow in the River Severn to mitigate flooding and provide support for drinking water abstractions for the West Midlands. It was completed in 1967 and is situated near the B4518 road north of Llanidloes, Powys. It regulates the flow of water in the River Severn by releasing water into the river channel during low flow periods and re-filling during the wetter winter months. This enables major water abstractions to be made from the River Severn to supply the West Midlands with of drinking water. Capacity is held in the res ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Claerwen Dam
The Claerwen reservoir and dam in Powys, Wales, were the last additions to the Elan Valley Reservoirs system built to provide water for the increasing water demand of the city of Birmingham and the West Midlands. The dam is built mainly of concrete, with the exterior dam face in dressed stone. The dam is a gravity dam built upon solid rock foundations as the pressure of the reservoir behind should be in equilibrium with the total weight of the dam itself thus causing complete stability. The Claerwen dam was finished in 1952 and was given a late Victorian effect so that it blended in with the earlier dams in the valley. It was necessary to employ the services of Italian stonemasons as British ones were still at work in London during the post-war rebuilding process of the late 1940s. The dam took six years to complete and was almost twice the size of the other dams in the Elan valley. The Claerwen reservoir is almost the size of all the other reservoirs in the Elan Valley syste ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Underground Power Station
An underground power station is a type of hydroelectric power station constructed by excavating the major components (e.g. machine hall, penstocks, and tailrace) from rock, rather than the more common surface-based construction methods. One or more conditions impact whether a power station is constructed underground. The terrain or geology around a dam is taken into consideration, as gorges or steep valleys may not accommodate a surface power station. A power station within bedrock may be less expensive to construct than a surface power station on loose soil. Avalanche-prone valleys often make a surface station unfeasible as well. After World War II, large hydroelectric power stations were placed underground more often in order to protect them from airstrikes. Often underground power stations form part of pumped storage hydroelectricity schemes, whose basic function is to level load: they use cheap or surplus off-peak power to pump water from a lower lake to an upper lake. During ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Glen Moriston
Glenmoriston or Glen Moriston ( gd, Gleann Moireasdan) is a river glen in the Scottish Highlands, that runs from Loch Ness, at the village of Invermoriston, westwards to Loch Cluanie, where it meets with Glen Shiel. The A887 and A87 roads pass through Glenmoriston. The Glen is dominated by the River Moriston, which in Gaelic might mean "river of the waterfalls". The river is a big attraction for fishers, but also for birdwatchers who come to see osprey and eagles fishing on the river. The river crashes over waterfalls at Invermoriston into Loch Ness, passing under an original Thomas Telford bridge, built in 1813. About five miles along the glen from Invermoriston is Loch Dundreggan, "Dundreggan" being of Gaelic origin and meaning "Dragon Haugh". Here the natural force of the river is tapped through a hydro-electric dam, which supplies power to the area. Water is let out of the dam on Tuesdays, making it a popular attraction for white water rafting and canoeing. After a feasib ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Glen Garry
A glen is a valley, typically one that is long and bounded by gently sloped concave sides, unlike a ravine, which is deep and bounded by steep slopes. Whittow defines it as a "Scottish term for a deep valley in the Highlands" that is "narrower than a strath".. The word is Goidelic in origin: ''gleann'' in Irish and Scottish Gaelic, ''glion'' in Manx. The designation "glen" also occurs often in place names. Etymology The word is Goidelic in origin: ''gleann'' in Irish and Scottish Gaelic, ''glion'' in Manx. In Manx, ''glan'' is also to be found meaning glen. It is cognate with Welsh ''glyn''. Examples in Northern England, such as Glenridding, Westmorland, or Glendue, near Haltwhistle, Northumberland, are thought to derive from the aforementioned Cumbric cognate, or another Brythonic equivalent. This likely underlies some examples in Southern Scotland. As the name of a river, it is thought to derive from the Irish word ''glan'' meaning clean, or the Welsh word ''gleindid ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Affric-Beauly Hydro-electric Power Scheme
The Affric / Beauly hydro-electric power scheme for the generation of hydro-electric power is located in the western Highlands of Scotland. It is based around Glen Strathfarrar, Glen Cannich and Glen Affric, and Strathglass further downstream. The scheme was developed by the North of Scotland Hydro-Electric Board, with plans being approved in 1947. The largest dam of the scheme is at Loch Mullardoch, at the head of Glen Cannich. From there, a tunnel takes water to Loch Beinn a' Mheadhoinn ( Loch Benevean) in Glen Affric, via a small underground power station near Mullardoch dam. Loch Benevean is also dammed, with a tunnel taking water to the main power station of Fasnakyle, near Cannich. To the north in Glen Strathfarrar, Loch Monar is dammed, and a tunnel carries water to an underground power station at Deanie. Further down the glen, the River Farrar is dammed just below Loch Beannacharan, with a tunnel to take water to Culligran power station, which is also underground. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
North Of Scotland Hydro-Electric Board
The North of Scotland Hydro-Electric Board (1943–1990) was founded to design, construct and manage hydroelectricity projects in the Highlands of Scotland. It is regarded as one of the major achievements of Scottish politician Thomas Johnston, who chaired the board from 1945 to 1959. Background In the 1930s several schemes were proposed to develop hydro-electric power in the north of Scotland. These met with opposition by landowners, sporting interest and the coal mining industry on the grounds of competition. There was also opposition from official sources. Plans to build a power station at Kinlochleven for the benefit of the aluminium industry were shelved when Inverness County Council refused to allow water from the River Spey and River Laggan to cross the county border into Argyllshire. In 1938, the Caledonian Water Power bill was defeated in Parliament. This would have allowed a private company to build hydro-electric schemes in the Highlands, and its defeat was welcomed b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hydroelectric
Hydroelectricity, or hydroelectric power, is electricity generated from hydropower (water power). Hydropower supplies one sixth of the world's electricity, almost 4500 TWh in 2020, which is more than all other renewable sources combined and also more than nuclear power. Hydropower can provide large amounts of low-carbon electricity on demand, making it a key element for creating secure and clean electricity supply systems. A hydroelectric power station that has a dam and reservoir is a flexible source, since the amount of electricity produced can be increased or decreased in seconds or minutes in response to varying electricity demand. Once a hydroelectric complex is constructed, it produces no direct waste, and almost always emits considerably less greenhouse gas than fossil fuel-powered energy plants. [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tunnel
A tunnel is an underground passageway, dug through surrounding soil, earth or rock, and enclosed except for the entrance and exit, commonly at each end. A pipeline is not a tunnel, though some recent tunnels have used immersed tube construction techniques rather than traditional tunnel boring methods. A tunnel may be for foot or vehicular road traffic, for rail traffic, or for a canal. The central portions of a rapid transit network are usually in the tunnel. Some tunnels are used as sewers or aqueducts to supply water for consumption or for hydroelectric stations. Utility tunnels are used for routing steam, chilled water, electrical power or telecommunication cables, as well as connecting buildings for convenient passage of people and equipment. Secret tunnels are built for military purposes, or by civilians for smuggling of weapons, contraband, or people. Special tunnels, such as wildlife crossings, are built to allow wildlife to cross human-made barriers safely. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
