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A water level device showing both ends at the same height. A water level (Greek: Aλφαδολάστιχο or (υδροστάθμη) [Alfadolasticho]) is a siphon utilizing two or more parts of the liquid water surface to establish a local horizontal line or plane of reference.
For drainage of water under gravity a suitable slope is required. Thus, roads are built in the fashion that their RL's on sides are comparatively smaller than the RL at the mid-span of the road. This ensures proper drainage of water from roads. For construction of buildings, roads, and dams, a horizontal levelled surface is required. So, at ...
Schematic cross section of a pressurized caisson. In geotechnical engineering, a caisson (/ ˈ k eɪ s ən,-s ɒ n /; borrowed from French caisson 'box', from Italian cassone 'large box', an augmentative of cassa) is a watertight retaining structure [1] used, for example, to work on the foundations of a bridge pier, for the construction of a concrete dam, [2] or for the repair of ships.
During the Middle Ages, dams were built in the Netherlands to regulate water levels and prevent sea intrusion. In the 19th century, large-scale arch dams were constructed around the British Empire, marking advances in dam engineering techniques. The era of large dams began with the construction of the Aswan Low Dam in Egypt in 1902.
The dam was constructed on the orders of the Government of the Federation of Rhodesia and Nyasaland, a 'federal colony' within the British Empire.The double curvature concrete arch dam was designed by Coyne et Bellier and constructed between 1955 and 1959 by Impresit of Italy [2] at a cost of $135,000,000 for the first stage with only the Kariba South power cavern.
This is an accepted version of this page This is the latest accepted revision, reviewed on 2 January 2025. Dam in Clark County, Nevada, and Mohave County, Arizona, US For other uses, see Hoover Dam (disambiguation). "Boulder Dam" redirects here. For other uses, see Boulder Dam (disambiguation). Dam in Arizona, U.S. Hoover Dam Hoover Dam by Ansel Adams, 1941 Official name Hoover Dam Location ...
The total volume of construction materials is 326,000 cubic yards (249,000 m 3). [3] The capacity of the reservoir is 1,602,000 acre⋅ft (1.976 × 10 9 m 3), with a full surface area of 20,700 acres (8,400 ha). The maximum operating elevation is 440 ft (130 m); any higher water levels will flow over the dam's spillway.
Construction below the water table is mostly managed by using cofferdams or pressurised caissons to exclude water sufficiently to work above the local water level within the enclosure, though it may also be possible to keep the water level down by pumping it out as fast as it seeps in, thereby artificially lowering the water table at the worksite.