The failure of the dam Vaiont is a catastrophic event not due to structural failure of the arched double curvature dam, but in a huge landslide slope of a flood basin. Despite the fact that in the area of Vaiont there was every indication of a "problem" area, though political-economic interests, combined with the absence of a common language among geologists and engineers, led to disastrous errors and omissions.
On May 25th, a sinkhole appeared on the side of the Lungarno Torrigiani road running along the Arno River in Florence, Italy. The sinkhole spanned approximately 200 meters and dozens of parked cars fell into the hole.
On May 23rd, a landslide at a jade mine in Hpakant, Myanmar occurred killing at least 12 workers and leaving many more missing. Over 100 workers were in the area at the time and it is unknown how many were trapped under the debris.
On May 22nd, a sinkhole appeared near a busy intersection in Ruijin, a city in the Jiangxi privince of southeast China. Four cars and a tree fell into the sinkhole. Luckily, the cars were unoccupied and nobody was injured. The cause of this sinkhole is under investigation.
The Mosul Dam on the Tigris River in northern Iraq is the largest Dam in the country and provides power to nearly two million people. According to engineers, the dam is at serious risk of collapse and the resulting flood could result in over a million deaths.
The Millennium Tower is a high-rise luxurious building and a landmark of San Francisco. The impressive structure stands out and is the tallest residential building in San Francisco, but recently, structural problems have been reported. The tower has been sinking into the ground and there is concern for even more serious damage.
It was the fiercest hurricane to hit the U.S. in more than a decade spun, making landfall in Texas. Harvey developed from a tropical wave to a Category 4 storm, coming ashore on August 25th and causing historic flooding. At peak intensity, the hurricane’s wind speed reached 130 mph. Check below structures that didn’t cope with these powerful winds and the major flooding in the area.
On this day in 1977, a small embankment dam located above Toccoa Falls Bible College in Georgia failed, releasing a wall of water that killed 39 people. This dam failure along with several others in the 1970s brought drastic changes in dam safety, such as the establishment of the National Dam Safety Program and many relevant state programs around the country. There are more than 90,000 dams in the US, out of which more than 15,000 are classified as high-hazard-potential structures, meaning that their failure would likely cause loss of life.