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Imperial Dam

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An arch dam is a concrete dam that is curved upstream in plan. The arch dam is designed so that the force of the water against it, known as hydrostatic pressure , presses against the arch, causing the arch to straighten slightly and strengthening the structure as it pushes into its foundation or abutments. An arch dam is most suitable for narrow canyons or gorges with steep walls of stable rock to support the structure and stresses. Since they are thinner than any other dam type, they require much less construction material, making them economical and practical in remote areas.

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24-735: The Imperial Diversion Dam (National ID # CA10159) is a concrete slab and buttress , ogee weir structure across the California/Arizona border, 18 miles (29 km) northeast of Yuma . Completed in 1938, the dam retains the waters of the Colorado River into the Imperial Reservoir before desilting and diversion into the All-American Canal and the Gila Project aqueduct. Between 1932 and 1940,

48-484: A radius of 35 m (115 ft). Their second dam was built around 1350 and is called the Kurit Dam . After 4 m (13 ft) was added to the dam in 1850, it became 64 m (210 ft) tall and remained the tallest dam in the world until the early 20th century. The Kurit Dam was of masonry design and built in a very narrow canyon. The canyon was so narrow that its crest length is only 44% of its height. The dam

72-617: Is double-curved in both its horizontal and vertical planes may be called a dome dam . Arch dams with more than one contiguous arch or plane are described as multiple-arch dams . Early examples include the Roman Esparragalejo Dam with later examples such as the Daniel-Johnson Dam (1968) and Itaipu Dam (1982). However, as a result of the failure of the Gleno Dam shortly after it was constructed in 1923,

96-502: Is 214 meters (702 ft) high and 1,314 meters (4,311 ft) long across its crest. It was completed in 1968 and put in service in 1970. Pensacola Dam was one of the last multiple arch types built in the United States. Its NRHP application states that this was because three dams of this type failed: (1) Gem Lake Dam, St. Francis Dam (California), Lake Hodges Dam (California). None of these failures were inherently caused by

120-742: Is located in Tibi was built in that era. The village belong to the Almohad king Zayt-Abu-Zayt until the year 1240 and then it was conquered by James I of Aragon. In the year 1244 the Treaty of Almizra, which was a result of a pact between the king Alfonso X of Castile and James I of Aragon, was signed. A line that had a border function was traced and it demarcated the Crown of Aragon and the Crown of Castile. The border started in Biar, crossed Tibi and Basot and ended on

144-403: Is made of concrete and placed in a V-shaped valley. The foundation or abutments for an arch dam must be very stable and proportionate to the concrete. There are two basic designs for an arch dam: constant-radius dams , which have constant radius of curvature, and variable-radius dams , which have both upstream and downstream curves that systematically decrease in radius below the crest. A dam that

168-557: Is still erect, even though part of its lower downstream face fell off. The Tibi Dam in Tibi , Spain was a post-medieval arch dam built between 1579 and 1594 and the first in Europe since the Romans. The dam was 42.7 metres (140 ft) high and 65 metres (213 ft) long. This arch dam rests on the mountains sides. In the early 20th century, the world's first variable-radius arch dam

192-660: The Imperial Irrigation District (IID) relied on the Inter-California Canal and the Imperial Canal and Alamo River . The Imperial Dam was built with three sections; the gates of each section hold back the water to help divert the water towards the desilting plant. Three giant desilting basins and seventy-two 770 ft (230 m) scrapers hold and desilt the water; the removed silt is carried away by six sludge-pipes running under

216-588: The 143-meter double-curved Morrow Point Dam in Colorado, completed in 1968. By the late 20th century, arch dam design reached a relative uniformity in design around the world. Currently, the tallest arch dam in the world is the 305 metres (1,001 ft) Jingpin-I Dam in China , which was completed in 2013. The longest multiple arch with buttress dam in the world is the Daniel-Johnson Dam in Quebec , Canada . It

240-526: The Colorado River that dump the sediment into the California sluiceway, which returns the silt to the Colorado River. The water is now directed back towards one of the three sections which divert the water into one of the three channels. About 90% of the volume of the Colorado River is diverted into the canals at this location. Diversions can top 40,000 cubic feet (1,100 m) per second, roughly

264-609: The area of Jumilla (north of Region of Murcia) to Villena. In the early 18th century, the current municipality was owned by the head of Marquisate of Dos Aguas until its demise in 1717. Castle in Tibi This castle is located on a long shaped peak. It was built in the 10th century and it belonged to the Almohad dynasty until the year 1240. After the Christian conquer, it became owned by the Crown of Aragon. Reservoir in Tibi It

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288-576: The base thickness to the structural height (b/h) as: Arch dams classified with respect to their structural height are: The development of arch dams throughout history began with the Romans in the 1st century BC and after several designs and techniques were developed, relative uniformity was achieved in the 20th century. The first known arch dam, the Glanum Dam , also known as the Vallon de Baume Dam,

312-463: The coast line. James I of Aragon bestowed the territory to Pedro Sánchez de Lienda and his spouse Ixonis de Soler. The population of the hamlet consisted of 150 inhabitants in that era. The manor Villa de Tibi and its castle was governed by several lords until the mid 15th century. Then, it became property of the head of the Marquisate of Villena, which was lord of a territory that extended from

336-480: The construction of new multiple arch dams has become less popular. Contraction joints are normally placed every 20 m in the arch dam and are later filled with grout after the control cools and cures. Tibi, Alicante Tibi ( Valencian: [ˈtibi] ; Spanish: [ˈtiβi] ) is a municipality in the comarca of Alcoià , Alicante , Valencia , Spain . The name of this municipality comes from Latin and it means "for you". This territory

360-415: The dam has a clear span of 60 ft (18 m) and each buttress is 24 ft (7.3 m) wide. Arch dam designs would continue to test new limits and designs such as the double- and multiple-curve. Alfred Stucky and the U.S. Bureau of Reclamation developed a method of weight and stress distribution in the 1960s, and arch dam construction in the United States would see its last surge then with dams like

384-401: The multiple arch design. The design of an arch dam is a very complex process. It starts with an initial dam layout, that is continually improved until the design objectives are achieved within the design criteria. The main loads for which an arch dam is designed are: Other miscellaneous loads that affect a dam include: ice and silt loads, and uplift pressure. Most often, the arch dam

408-459: The state of Oklahoma in 1940, was considered the longest multiple arch dam in the United States. Designed by W. R. Holway , it has 51 arches. and a maximum height of 150 ft (46 m) above the river bed. The total length of the dam and its sections is 6,565 ft (2,001 m) while the multiple-arch section is 4,284 ft (1,306 m) long and its combination with the spillway sections measure 5,145 ft (1,568 m). Each arch in

432-718: The volume of the Susquehanna River and more than 50 times the flow of the Rio Grande . The Gila project aqueduct branches off towards Arizona while the All-American canal branches southwards for 37 miles (60 km) before reaching its headworks on the California border and bends west towards the Imperial Valley . Arch dam In general, arch dams are classified based on the ratio of

456-614: The world, in particular by the U.S. Bureau of Reclamation . In 1920, the Swiss engineer and dam designer Alfred Stucky developed new calculation methods for arch dams, introducing the concept of elasticity during the construction of the Montsalvens arch dam in Switzerland, thereby improving the dam profile in the vertical direction by using a parabolic arch shape instead of a circular arch shape. Pensacola Dam , completed in

480-408: Was 5.7 metres (19 ft) high and 52 m long (171 ft), with a radius of 19 m (62 ft). The curved ends of the dam met with two winged walls that were later supported by two buttresses. The dam also contained two water outlets to drive mills downstream. The Dara Dam was another arch dam built by the Romans in which the historian Procopius would write of its design: "This barrier

504-512: Was built by the Romans in France and it dates back to the 1st century BC. The dam was about 12 metres (39 ft) high and 18 metres (59 ft) in length. Its radius was about 14 m (46 ft), and it consisted of two masonry walls. The Romans built it to supply nearby Glanum with water. The Monte Novo Dam in Portugal was another early arch dam built by the Romans in 300 AD. It

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528-629: Was built on the Salmon Creek near Juneau , Alaska . The Salmon Creek Dam's upstream face bulged upstream, which relieved pressure on the stronger, curved lower arches near the abutments. The dam also had a larger toe, which off-set pressure on the upstream heel of the dam, which now curved more downstream. The technology and economical benefits of the Salmon Creek Dam allowed for larger and taller dam designs. The dam was, therefore, revolutionary, and similar designs were soon adopted around

552-460: Was not built in a straight line, but was bent into the shape of a crescent, so that the curve, by lying against the current of the river, might be able to offer still more resistance to the force of the stream." The Mongols also built arch dams in modern-day Iran. Their earliest was the Kebar Dam built around 1300, which was 26 m (85 ft) high and 55 m (180 ft) long, and had

576-497: Was populated with 1,564 people in the year 2018. Two mountain ranges stretches this municipality: Serra del Maigmó and Serra de la Penya-roja. The village is places on the slope of the second mountain range. A river whose name is Monnegre or Riu Verd traverses the municipality. During the period in which Muslims occupied the Iberian Peninsula , this current municipality was governed by several kings. The castle that

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