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Burj Dubai is a skyscraper currently under construction in the city of Dubai in the UAE, which, upon completion, will be the tallest structure ever built by humans. On July 21, 2007, as announced by the sponsoring company, Emaar Properties, the Dubai Tower broke the record held by the tall Taipei 101. On January 17, 2009, apparently, the Burj Dubai has reached its maximum altitude -818 meters, information that is confirmed by an article on the internet. However, the promoter has not confirmed this event.
At first, the Burj Dubai would have the name "Tower Groll", measuring 570 meters, enough to make it the world's tallest building, and would be placed in Australia. The shape of the skyscrapers had nothing with the current design. He would take the form of a prism with a lighted tip. |
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Hoover Dam, once known as Boulder Dam, is a concrete arch-gravity dam in the Black Canyon of the Colorado River, on the border between the US states of Arizona and Nevada. It was constructed between 1931 and 1936, and was dedicated on September 30, 1935, by President Franklin Roosevelt. Its construction was the result of a massive effort involving thousands of workers, and cost over one hundred lives. |
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Empire State Building is a skyscraper in New York City, at the intersection of Fifth Avenue and West 34th Street. Its name derives from the nickname of the state of New York. It was the world's tallest building for over forty years since its completion in 1931 until 1972, when it completed the construction of the North Tower of the World Trade Center. After the destruction of the World Trade Center in 2001, the Empire State Building again became the tallest building in New York City and State of New York.
The Empire State Building has been named by the American Society of Civil Engineers as one of the Seven Wonders of the modern world. The building and its interior monuments are appointed by the Commission for the Preservation of New York City, and confirmed by the Board of Estimate of City of New York. Was designated as a National Historic Monument in 1986. In 2007, he was number one on the list of favorite American buildings. The building is owned and managed by W & H Properties. |
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The Pyramid of Menkaure, also known as the Pyramid of Mycerinus, located on the Giza Plateau in the southwestern outskirts of Cairo, Egypt, is the smallest of the three Pyramids of Giza. It was built to serve as the tomb of the fourth dynasty Egyptian Pharaoh Menkaure. Menkaura's Pyramid had an original height of 65.5 metres (218 feet) and was the smallest of the three major pyramids at the Giza Necropolis. It now stands at 61 m (204 ft) tall with a base of 108.5 m. Its angle of incline is approximately 51°20?25?. It was constructed of limestone and granite. The first sixteen courses of the exterior were made of granite. The upper portion was cased in the normal manner with Tura limestone. Part of the granite was left in the rough. Incomplete projects like this help archeologists understand the methods used to build pyramids and temples. South of the pyramid of Menkaure were 3 satellite pyramids none of which appear to have been completed. The largest was made partly in granite like the main pyramid. Neither of the other 2 progressed beyond the construction of the inner core. |
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Trans-Atlantic tunnel is a theoretical tunnel under the Atlantic between Europe (London) and North America (New York), so the two continents together to connect. The tunnel would use magnetic levitation trains. With advanced technologies, it speeds will be from 500 to 8.000 km/h.
Plans for a tunnel as they are never touched the conceptual phase, and no one currently pursues this project. The most common route is that between the United States and the United Kingdom, or, more specifically, New York and London. The main obstacles to building such a tunnel are the costs - possibly $12 trillion - and the limits of current knowledge of materials. Even if existing large tunnels, such as the Channel Tunnel and Seikantunnel, less advanced technology than any trans-Atlantic tunnel. The price remains the biggest breaker. A trans-Atlantic tunnel is about 200 times longer than the longest current tunnel and would be 3000 times as much as costs. |
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