hoover dam construction

Special men were required for the job, men called "high-scalers." Millions of years of weather eroded the canyon walls. United States Department of Interior, Water and Power Resources Service. The Hoover Dam is a historical and engineering wonder of America, so check out 21 rare photos from it's construction in 1936. The dam is an arch gravity structure rising 726 feet above bedrock. Six Companies, Inc. was a joint venture of construction companies that was formed to build the Hoover Dam on the Colorado River in Nevada and Arizona. Water froze in cracks and crevices, splitting the rock. The Hoover Dam was built by a construction company called Six Companies Inc, which was actually a consortium of several companies: Morrison-Knudsen Co., Utah Construction Co., J. F. Shea Co., Pacific Bridge Co., MacDonald & Kahn Ltd. and a joint venture of W. A. Bechtel Co., Henry J. Kaiser, and Warren Brothers. An enormous concrete arched structure, measuring over 725 feet high and 1,244 feet long, the dam cost 49 million dollars to complete and was responsible for over 100 deaths. Construction of the dam, powerhouse, and related structures required a total of 4,400,000 cubic yards of concrete, 45,000,000 pounds of reinforcing steel. The Construction of Hoover Dam, Preliminary Investigations, Design of Dam, and Progress of Construction. Construction of the dam would eventually cost $49 million ($700 million by today’s valuations). The Story of Hoover Dam - Essays . The Hoover Dam is made of about five million barrels of cement and 45 million pounds of reinforcement steel, which made it the biggest dam in the world at the time of its construction. High Scalers. Hoover Dam. They later built Parker Dam, a portion of the Grand Coulee Dam, the Colorado River Aqueduct across the Mojave and Colorado Deserts to urban Southern California, and many other large projects. Built during the Great Depression, between 1931 and 1936, the Hoover Dam—then known as the Boulder Dam—was one of the biggest construction projects of the era. If massive government spending isn't enough to make the Hoover Dam creepy, over the years the monolith has had some other spooky stories attached to it. Secretary of Commerce Herbert Hoover’s negotiations over the 1922 Colorado River Compact to direct the water to the seven nearby states was met with legal challenges until President Calvin Coolidge authorized the project in late 1928. Because of the dam's remote location and difficult terrain, a town had to be built to house the construction companies and their workers. The grandeur of the Hoover Dam makes one speechless, as you look down at birds of prey hovering down below in the canyon. Washington: United States Government Printing Office, 1933. Over 700 feet tall, it has been standing here, on the Nevada-Arizona border, since 1935, having been completed just four short years after the award of the contract (and two years ahead of schedule). There is enough concrete in Hoover Dam to build a two lane highway from Seattle, Washington to Miami, Florida or a four foot wide sidewalk around the Earth at the equator. Before construction could begin on the dam, this loose rock had to be removed. It is 660 feet thick at its base, 45 feet thick at its crest, and stretches 1,244 feet across Black Canyon. by Ray Lyman Wilbur and Elwood Mead. A $15 million capital-improvement project for the Hoover Reservoir dam area near Westerville will begin soon.

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