![]() ![]() “The structure of that building was still good. “The reason for that is that part on the right side - its columns were still okay,” said Albert Bleakley, a professor of mechanical and civil engineering at the Florida Institute of Technology. Moehle, a professor of structural engineering at the University of California at Berkeley, the first section probably “dragged the remaining portion sideways until its gravity-load carrying capacity was exhausted and it, too, collapsed.”Įxperts noted that, unlike the first section, the second section visibly twisted and sloped to one side in the moments before it fell. The video footage shows that about seven seconds after the initial collapse, a second section of the building starts to fall.Īccording to Jack P. ![]() The east portion fell seven seconds after the center. ![]() Nir was previously interviewed by COLlive, an independently run Orthodox Jewish news service. About a minute later, a dispatcher with Miami-Dade County Fire and Rescue called for an engine to respond to an alarm at the building, audio shows.Īccording to additional EMS audio, the building collapsed between 1:24 and 1:25 a.m. ![]() Nir’s son called 911 at 1:19 a.m., he said, a time that he said he confirmed by checking the time stamp on his phone. She and the two of her children who were home at the time then ran from the building. She estimated that about a minute later, while she was in the lobby, she heard a very large boom and saw that part of the surface-level parking area - and part of the pool deck - had collapsed into the underground parking garage. Around 1:14 a.m., she heard a noise that she thought sounded like a wall crashing down, and she left her ground-level apartment to complain to a security guard in the lobby. Sara Nir, a resident, told The Post that shortly before 1 a.m., she noticed loud “knocking” noises that she assumed were caused by construction work. “There’s got to be a very specific sequence of events that somehow evaded all the fail-safes in the code and everything else.” The building collapse is as shocking “to the public in general … as it is to the engineering community,” said Joe DiPompeo, the president of the Structural Engineering Institute of the American Society of Civil Engineers. Such a catastrophe is extraordinary for a 40-year-old building even if a range of imaginable failures had occurred, the experts said. In images of the rubble, four experts saw indications of “punching shear failure,” in which concrete slabs that make up the floors of a building detach from the structure’s vertical support columns. Of more than a dozen experts interviewed for this article, including nine structural engineers, most agreed that the collapse appeared to involve a failure at the lowest levels of the building or in the parking garage beneath it. (Photo by Ricky Carioti/The Washington Post) “And then once the middle of the building collapsed, number two, then the rest of the building didn’t know how to stand up and it fell down also, number three.” A resident told The Washington Post that part of the pool deck and the surface-level parking lot collapsed before the building. “There is a possibility that part of the pool came down first and then dragged the middle of the building with it, and that made that collapse,” said Kilsheimer, who had previously voiced skepticism about the significance of the damage noted in the engineer’s report. Kilsheimer, a veteran engineer hired by Surfside to investigate the collapse, told The Post that such a failure could have set off a wider catastrophe. Experts urged caution and some structural engineers said they doubted that a collapse in the deck slab would have jeopardized the beachside building’s overall integrity. The investigation into the collapse last Thursday is likely to take many months and may find no single definitive cause. At least 64 people were killed and 76 remain unaccounted for following a type of disaster that is unheard of in the United States. The husband of another resident has said that his wife, who has not been seen since the disaster, made a similar observation in a telephone call shortly before the collapse.Īn engineer in 2018 found “major structural damage” in the pool deck area caused by what he said was a flaw that limited water drainage. A Washington Post examination of video and images from the deadly collapse of a high-rise apartment building outside Miami - along with interviews with structural engineers, a key witness and an investigator - deepens questions about whether existing damage to a deck in the pool area contributed to the disaster.Ī resident told The Post that minutes before Champlain Towers South in Surfside came down, she noticed that a section of the pool deck and a street-level parking area had collapsed into the parking garage below. ![]()
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