WORST ENGINEERING DISASTER
1.Washington,
Bridge of tacoma
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Tacoma Narrows Bridge is a couple of miles long (1,600-meter ) suspension bridges with main spans of 2800 feet ( 850 m ) . The first bridge , nicknamed Galloping Gertie , was opened to traffic on July 1, 1940 , and became famous four months after a dramatic collapse induced by the structural wind was captured on color film film . Surprisingly the only victim was a black Cocker Spaniel. The new bridge was opened in 1950 , and a parallel bridge opened in 200
2. Hyatt Regency Hotel
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this was a major disaster that occurred on July 17, 1981 in Kansas City, Missouri, killing 114 people and injuring more than 200 during a tea dance. At the time, was the deadliest structural collapse in U.S. history On July 17, 1981, approximately 2,000 people had gathered in the atrium to participate and watch a dance contest. Dozens of standing in the aisles. At 7:05 in the afternoon, the walkways on the second, third and fourth floor is filled with visitors, since he watched over the active lobby, also full of people. The bridge on the fourth floor, suspended directly over the bridge of the second floor, the third floor corridor embarked on the face to several meters away from the other two. Issues of construction led to a change in subtle but flawed design that doubled the load on the connection between the fourth floor stand and the tie rods carrying the weight of the second floor corridor. This new design could hardly bear the weight of the structure itself, and much less the weight of the hundreds of spectators standing on it. Failed connections it and the two roads crashed in the lobby, killing 114 people and injuring more than 200.
3. Disaster of the nuclear power plant of Chernobyl
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Disaster of the nuclear power plant of Chernobyl
This incident is the worst nuclear power plant accident in history and the only level 7 on the International Nuclear Event Scale , resulting in a severe nuclear fusion. The April 26, 1986 at 1:23:40 AM structurally reactor number four at the Chernobyl nuclear power station located in the Soviet Union , near Pripyat in Ukraine exploded. More explosions and the resulting fire sent a cloud of highly radioactive fallout into the atmosphere and over an extensive geographical area. 336,000 had to be relocated.
4.Dam floods in San Francisco
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The career of William Mulholland ended March 12, 1928 , when his prey San Francisco not only hours after being inspected by it , sent 12.5 billion gallons of water ( 47 million m³ ) inundadndo the Santa Clarita Valley , north of Los Angeles. The village of Santa Clara was buried under 20 feet (6 m ) of mud and debris ; other parts of Ventura County were covered up to 70 feet (21 m ) . Rescuers worked through the disaster for days , and the final death toll is estimated at 450, including 42 school children
5.Boston molasses disaster
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529 Commercial Street , the UN Huge molasses tank 50 turnovers (15 m ) high, 90 empanadas ( 27 meters) in diameter, with capacity of 8,700,000 liters , collapsed. Witnesses said that when he was strong UN Derrumbo thud like a machine gun when fired rivets out of the tank and that the ground shook as if by train Pasara UN Alli. The collapse unleashed a tidal wave of molasses Between 8 and 15 turnovers ( 2.5 to 4.5 m ) tall, and muevia 35 mph ( 56 km / h ) . The wave of molasses was enough strength para romper beams Atlantic Adjacent to Boston Elevated Railway Structure UN Avenue and lift out of the train tracks . Nearby, the were washed buildings off their foundations and crushed. 21 Were Victims Wounded along 150 scammers .
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