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<p>Since man started putting up buildings, the Earth has been trying to knock them down. Mankind learned early on how to earthquake-proof their buildings, but only recently have these earthquake-resistant structures begun to reach truly massive size.</p> <p>Thanks to new technologies and new testing methods, some of today's largest buildings can stay safe in a quake without compromising their size or aesthetic design. In fact, to attain their great height, many of the world's largest buildings utilize architectural elements that also protect them in case of disaster. </p> <p>Innovatively constructed and safely designed, here are the seven largest earthquake-proof buildings in the world. </p> <p><i>Follow InnovationNewsDaily on Twitter <a href="http://twitter.com/#!/News_Innovation" mce_href="http://twitter.com/#!/News_Innovation">@News_Innovation</a>, or on <a href="http://www.facebook.com/InnovationNewsDaily" mce_href="http://www.facebook.com/InnovationNewsDaily">Facebook</a>.</i></p> <p><i></i></p>

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<p></p> <p><b>The Burj Khalifa (Dubai, UAE)</b></p> <p>Dubai has plenty of incentive to keep the Burj Khalifa standing not matter what happens. It's not just the tallest building in the world; it's also a symbol of national prosperity. To this end, engineers constructed the 2,717 foot tall tower to withstand earthquakes far strong than could be expected in the region. </p> <p>Conflicting reports claim that the tower can withstand anything from a 5.5 to a 7.0 on the Richter scale, but even the lower range of those numbers still comes out much stronger than any recent earthquake in Dubai. </p> <p>This is not to say that the structure has not faced some shaking. In 2008, an earthquake in nearby Iran rattled the building, but the engineering held and the Burj Khalifa didn't suffer any damage. </p> <p></p>

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<p></p> <p><b>U.S. Bank Tower (Los Angeles, California)</b></p> <p>Since its construction in the 1980s, Los Angeles' U.S. Bank Tower has proven irresistible to movie directors, who have filmed the building's destruction at the hands of aliens, dragons and volcanoes. In real life, though, the building is actually rather durable. </p> <p>The tallest building in the seismically active state of California, U.S. Bank Tower stands 1,018 feet high, and contains 1.3 million square feet of office space. The building was constructed to withstand an 8.3 magnitude earthquake, which scientists believe is stronger than the San Andreas can produce. </p> <p></p>

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<p></p> <p><b>Yokohama Landmark Tower (Yokohama, Japan) </b></p> <p>The Japanese people have suffered through earthquakes ever since humans first occupied the geologically active island chain. As such, they have always constructed their buildings with an eye towards earthquake safety, and Japan's tallest building, the Yokohama Landmark Tower, is no different. </p> <p>The 972-foot tall building features a combination of anti-earthquake measures. The entire building sits on rollers, which allow the earth to undulate beneath the structure without shaking it. Additionally, the building has an active mass damper system that prevents the building from swinging by weighing it down. And if that doesn't work, the building is made from flexible materials that bend with the earthquake instead of breaking.</p> <p></p>

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<p></p> <p><b>Taipei 101 (Taipei, Taiwan)</b></p> <p>Taiwan's former king of skyscrapers needed some large-scale engineering to withstand the country's frequent earthquakes and typhoons not to mention sitting near a huge fault line. The solution came in the form of a 730-ton ball of steel which hangs inside it like a gigantic pendulum to counteract any swaying.</p> <p>Known as a tuned mass damper, the ball rests inside a sling made of steel cables and has its own shock absorbers. That should help ensure Taipei 101 can stand proud for a long while to come, even if it lost its crown as world's tallest building to the Burj Khalifa in Dubai in 2010. Ironically, earthquake experts have also argued about whether stress from the 700,000 ton mass of Taipei 101 has actually reopened an ancient earthquake fault.</p> <p></p>

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<p></p> <p><b>Sabiha G

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<p></p> <p><b>Transamerica Pyramid (San Francisco, California)</b></p> <p>San Francisco's tallest skyscraper owes three decades of existence to solid structural engineering that allows it to resist the earthquake threat in California. Its pyramid-shaped structure sits on top of a 52-foot-deep steel and concrete foundation designed to move somewhat with quakes, while reinforcing rods interlace the building at four places on each floor.</p> <p>Similarly, a system of triangular trusses supports the building's base just above the first floor. Such measures helped the 48-story-high Transamerica Pyramid survive a 7.1-magnitude quake that struck the nearby Santa Cruz Mountains in 1989. The building shook for more than a minute and swayed almost a foot from side to side at the top story, but remained undamaged.</p> <p></p>

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<p></p> <p><b>Torre Mayor (Mexico City, Mexico)</b></p> <p>Mexico City's 57-story skyscraper stands near ground zero for an 8.1-magnitude quake that leveled much of the city and killed more than 10,000 citizens in 1985. As such, the Torre was built to withstand rare but powerful 9.0-magnitude earthquakes it represents one of the most quake-proof buildings in the world alongside the U.S. Bank Tower in Los Angeles.</p> <p>The building's superstructure has 21,200 tons of steel and concrete, with steel columns encased in reinforced concrete stretching up to the 30th floor and a primarily steel frame above that level. But the heart of the defense comes from 98 seismic dampers that resemble giant shock absorbers built into the steel bracing. </p> <p>Such dampening technology was previously used by the U.S. military to protect missile launch sites against the impact of nuclear strikes. Now it serves a more peaceful purpose by ensuring that the Torre Mayor, inaugurated in June 2003, can still stand as one of the world's safest buildings in a dangerous seismic zone.</p>

The World's 7 Biggest Earthquake-Proof Buildings