How long is the Three Gorges Dam?
Three Gorges Dam
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Made of concrete and steel, the dam is 2,335m (7,661ft) long and the top of the dam is 185m (607ft) above sea level. The project used 27.2×10^6m3 (35.6×10^6cuyd) of concrete (mainly for the dam wall), used 463,000 T of steel (enough to build 63 Eiffel Towers), and moved about 102.6×10^6m3 (134.2×10^6cuyd) of earth.[31] The concrete dam wall is 181m (594ft) high above the rock basis.