"Thin building": The 0/2-story building in Florida/KLOC, USA collapsed and the floor was very thin. Is this the cause of the crash?

According to CNN, Miami Beach Apartment suddenly collapsed on Thursday morning 1: 30 local time in Florida, USA, killing at least three people and leaving 99 missing!

From the pictures taken at the collapse site, it can be seen that the collapse of this building is very serious, and there is basically no structure to support the living space, and all the missing people have run out! On the other structures of the apartment building that didn't collapse, there were some air conditioners, residents' furniture and some household appliances, which seemed to fall from the roof!

What impressed everyone most was the 12-story building. There seems to be no obvious frame structure, and there is a thin floor between the upper and lower floors. Is this the real reason for the collapse?

The collapsed building is located in champlain Tarnum Apartment, a seaside town about 6 miles north of Miami Beach, Miami-Dade County, Florida, in the southeastern United States. According to reports, the building was built in units 198 1, 136. The collapsed part is the northeast corridor, which contains about 55 units.

The casualties of this collapse should be very heavy, because there are several quite serious problems in the process of collapse:

1. It was local time 1: 30 when it collapsed, and most residents were already asleep.

According to witnesses, it was a high-speed collapse, and a thick smoke floated by, and the building collapsed.

According to the video of the nearby surveillance video, the collapse process was very strange, starting from the center of the building and then the northeast corridor near the coastline began to collapse, but after a few seconds, the collapsed smoke rose, blocking the line of sight, and the surveillance video could not see the scene clearly!

Except for the residents who didn't go home, 1:30 had already rested, and there was no time to react in their sleep. Even if they wake up, they will be slow to respond because they just woke up, so it is difficult to escape at this time!

Another important reason is that there is no time to escape, because it takes only a few seconds from the collapse of the center to the collapse of the northeast corridor, which is estimated to be enough for Superman and Spider-Man to climb out of the window.

Judging from the published pictures, it is basically a pile of rubble, and the floors are stacked one by one, just like the scene after the landslide. Nevertheless, we still hope to leave a lot of living space in it and try our best to save more lives!

Jimmy Patronis, Florida Fire Chief and Florida Chief Financial Officer, said that the rescue will not stop because of the arrival of the night, and rescuers will work all night!

In the video released by local TV station, rescuers rescued a mother and a child, but the woman's leg was pinned down by the floor and had to be amputated to save her from the rubble. This is a heartbreaking picture!

According to Raide Jadallah of Miami-Dade Fire and Rescue Center, 35 people have been rescued so far, and the rescue center is building supporting structures to prevent the nearby parts from suddenly collapsing! He said that the records of this building are almost all people, but many people are on vacation, and the records are not real-time, so the authorities have not figured out how many people are buried under the rubble!

Eliana Salzhauser, Commissioner of Surfside City, said that this building has been over 40 years, and the county stipulates that houses that have reached 40 years must be re-certified, and this building has just passed 40 years, and the records show that it is being re-certified! The lady said that on Wednesday (before the collapse), at least one building inspector arrived at the scene to investigate, but he was not sure what conclusion he had reached!

"Thin building" is the real reason?

According to witnesses, the roof of this apartment building was under construction before it collapsed, but now it is impossible to determine whether the construction is related to the collapse, and the nature of the construction is still under investigation!

Witnesses expressed dissatisfaction with the quality of the building, because from the exposed floor and structure, there seems to be no load-bearing structure. For example, the floor is very thin and there is no frame structure. The concrete is gray, and it doesn't look like a high-strength concrete structure at all, but a loose block structure!

Charles Burkett, the mayor of Surfside, described the building as "a pancake". I don't know whether Mr. Mayor described the collapse of the building thoroughly or the quality of the building badly, but the description of the floor like a pancake is very appropriate! Because from the bare floor, compared with the building, the floor is really thin!

Barry Cohen, a 63-year-old resident of this apartment building, said that he was sleeping with his wife in the southeast corner where the northeast corridor collapsed. Suddenly, the thunderous sound was accompanied by a huge vibration. He thought it was an earthquake! Get up quickly and open the door only to find that the end of the original corridor has disappeared!

The authorities have not made a substantial investigation into the cause of the collapse of the building, and residents are also very skeptical about the quality of the old building where they live, because the standards in the buildings in the 1980s were not as strict as they are now, and judging from the fracture position of the building collapse, it seems that the cement grade is very low!

The real problem is that the building safety inspector arrived before the collapse on Wednesday, which means that the authorities know something about the movement of the building, but why didn't they evacuate earlier? This is a question, and the answer may not be given until the Florida authorities investigate it!