Khalid Mosalam is a professor of structural engineering.He participated ABC7 program “Getting Answers” On Monday, we will discuss the collapse of a building that is currently killing 11 people.
“It will take some time to know exactly what happened,” said Professor Mosalam. “But given that the building was built 40 years ago, it can be inferred that the code provisions that were followed at the time were not as robust as the current code.”
In order for a collapse of this magnitude to occur, Mosalam said there must have been something wrong with the building. It has to do with the foundation and the soil.
He said Florida’s oceanic climate and erosion associated with buildings located along the waterfront may also have jeopardized the building’s capabilities.
“Fortunately, these failures are very rare,” he said.
But scarcity does not mitigate the consequences, he said.
Now, could this happen in San Francisco, a city full of skyscrapers surrounded by water?
“Here in California, we’re obviously worried a lot about earthquakes, so most of our structures are designed with that in mind,” he said.
And along with that, he said, it brings elasticity.
The Millennium Tower in San Francisco is known to be sinking, but Mosalam believed it wasn’t a big deal.
As of February 2020 The 58-story building has been sunk 17 inches and tilted 2 inches since it first opened in 2009.
A professor at the University of California, Berkeley emphasized the need to plan before catastrophic events, such as what happened in Florida.
“If there is a situation where the building sinks, you need to monitor it. There is no way around it. You need to deploy a monitoring system and issue enough warnings before such a catastrophic failure occurs. There is, “he said.
He said the Florida condo building was built 40 years ago with an old design and had reduced capacity due to concrete erosion and tiny cracks.
“Fortunately, that’s not the situation in San Francisco,” Mosalam said.
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