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hollow gravity dams, made of reinforced concrete: Braddock Dam; Composite dams are a combination of concrete and embankment dams. [5] [better source needed] Construction materials of composite dams are the same used for concrete and embankment dams. Gravity dams can be classified by plan (shape): Most gravity dams are straight (Grand Coulee Dam).
The tallest embankment dam and second tallest dam in the world is the 300 m (984 ft) Nurek Dam in Tajikistan. The tallest gravity dam is the 285 m (935 ft) high Grande Dixence Dam in Switzerland. The tallest natural dam, the 567 m (1,860 ft) Usoi Dam in Tajikistan, is 262 m (860 ft) taller than the tallest existing man-made one.
Embankment dams come in two types: the earth-filled dam (also called an earthen dam or terrain dam) made of compacted earth, and the rock-filled dam. A cross-section of an embankment dam shows a shape like a bank, or hill. Most have a central section or core composed of an impermeable material to stop water from seeping through the dam.
Name State(s) Height Type River Coordinates Built ft m; Oroville Dam [1] CA 770.5 234.8 Embankment Feather River: 1968 Hoover Dam [2] AZ NV 726 221 Arch-gravity dam
Gravity dams are classified as "solid" or "hollow" and are generally made of either concrete or masonry. The solid form is the more widely used of the two, though the hollow dam is frequently more economical to construct. Grand Coulee Dam is a solid gravity dam and Braddock Locks & Dam is a hollow gravity dam. [citation needed]
Gardiner Dam [6] Canada: 1967 65.4 64 9.4 186 TE 8 Oroville Dam United States: 1968 59.6 230 4.36 819 TE/ER 9 San Luis Dam (BF Sisk Dam) United States: 1967 59.6 93 2.52 424 TE 10 Nurek Dam Tajikistan: 1980 54 300 10.5 3,200 TE 11 Samara Dam Russia: 1955 54 [4] 52 57.3 2,315 TE or ER 12 Garrison Dam [2] United States: 1954 50.8 64 29 583.3 TE ...
Gravity style diversion dams are built to counteract the force of the water pushing on the dam by building a dam with enough weight to withstand the force. Gravity dams are commonly constructed using masonry or cement. The foundations of the gravity dams are generally constructed on top of a solid bedrock foundation. However, gravity dams can ...
Hoover Dam from the air. Arch-gravity dams are dams that resist the thrust of water by their weight using the force of gravity and the arch action. [3]An arch-gravity dam incorporates the arch's curved design which is effective in supporting the water in narrow, rocky locations where the gorge's sides are of hard rock and the water is forced into a narrow channel.