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Unformatted text preview: Hoover dam Page 1 of 2 Hoover dam is America's most famous landmark, completed in 1935. It was the most colossal structure in the world at that time. This great American icon was to be the largest and heaviest dam, producing the largest amount of Hydro electric power in the world. 21000 men took part in its construction and of them 112 laid their lives to complete this megastructure. Though its not the superior dam today but still most famous, iconic and greatest dam ever built. Situated in Mojave desert, 30 Km south-east of Las Vegas. Built on Colorado River at Black Canyon, the construction site was extremely difficult. The risks involved were huge and the consequences could have been catastrophic, if the dam failed. Hoover Dam is 221 m high, 201 meters thick and 3.4 million cubic meters of concrete has been used in it. Background for Hoover Dam Construction Colorado, worlds one of the most powerful and unpredictable rivers, would break its banks in every spring and flood the area. The Government instructed the Bureau of Reclamation to come up with a solution and they decided to build world's largest dam. The site chosen for the megastructure Hoover Dam was Black Canyon . It is an 800 ft high deep gorge through which the river flowed. The spot, Black canyon is in the middle of the desert, so there was no infrastructure, no labors, no transportation and the weather too was harsh. Frank Crow, was the Chief Engineer of Hoovered Dam and was assigned the job to get it completed in the span from 1931 – 1935. The construction of Hoover took 7 years at a cost of $ 125 million. Nowadays this amount is about 788 million pounds. If the dam was not completed in the given time it would have cost the contractors $ 3000 / day in financial penalties. Hoover Dam Statistics - Hoover Facts 1. 726.4 feet high (221 m) 2. 1,244 feet wide (379 m) 3. 660 feet (203 m) thick at the base 4. 45 feet (13 m) thick at the top 5. $165 million dollars to build 6. 4.5 years to build 7. 4.4 million yards of concrete used for construction 8. March 1931 building began 9. September 30, 1935 President Franklin D. Roosevelt dedicated the completed dam Powerhouse 1. 17 generators 2. 4+ billion kilowatt hours produced each year 3. 10 acres of floor space Power used by: 1. 56% California 2. 25% Nevada 3. 19% Arizona Lake Mead 1. 6.5 years to fill (A slow filling process was required to lessen the pressure change on the dam and to help prevent small earthquakes due to land settlement.) 2. 589 feet (181 m) at the deepest point 3. 247 square miles in size 4. 110 miles (176 km) long 5. Named after Dr. Elwood Mead, Commissioner of the Bureau of Reclamation (1924 - 1936) 6. Largest man made reservoir in the United States Hoover Construction - Stage 1 Hoover Dam Tunnels In April 1931 blasting for construction of plain dry area, upon which dam would be built, began....
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