Miami Building Collapse

printer

Well-Known Member
they had a new $15M assessment on the condo owners to bring to code for 2021. a new hi-rise had recently been installed nearby and when they were installing the pylons it made their building shake and residents had complained. i'm sure it didn't help an already ailing building.

it's easier to pay off a resident for cosmetic than to really fix until inspection time.
We had a building being put in. They were hammering in the piles, no big deal. Then as they are hammering it disappears. ??? Putt another one in, disappears also. In the end they lost so many piles that they went to steel piles as there were not enough piles to finish the job in time. I guess they know what they are doing.

I doubt that the new building did the old one any good.
 

printer

Well-Known Member
Consultant warned of 'major structural damage' before Florida building collapse
An engineering consultant who examined the Miami-area residential building that partially collapsed early Thursday had warned in 2018 of “major structural damage” that informed plans for a repair project that were scheduled to begin soon.

A 2018 structural report that was released by the the town of Surfside on its website late Friday night, was conducted “as required by” the Miami-Dade County Code, which mandates that 40-year-old structures like the Champlain Towers South condominium complex undergo a recertification process.

Frank Morabito, the engineering consultant who conducted the report, found “abundant cracking and spalling of varying degrees” in the “concrete columns, beams, and walls” of the ground floor parking garage.

The report also included photos of cracks in the columns and “spalling,” or concrete tumbling, that had exposed steel reinforcements on the garage deck.

Morabito noted several other reported problems, including residents complaining of water coming through their windows and balcony doors, as well as the deterioration of the concrete on several balconies.

“Though some of this damage is minor, most of the concrete deterioration needs to be repaired in a timely fashion,” Morabito wrote in the October 2018 report.

“These documents will enable the Condominium Board to adequately assess the overall condition of the building, notify tenants on how they may be affected, and provide a safe and functional infrastructure for the future,” he wrote at the time.

He added that repairs were needed for “maintaining the structural integrity” of the building, though he did not specify if he believed the structure was at risk of collapsing.

The federal government’s National Institute of Standards and Technology (NIST) said Friday that it was sending six scientists and engineers to conduct a preliminary probe into what may have caused the collapse.
 

schuylaar

Well-Known Member
posturing doesn't help those who may be trapped; bring in the Israelis.

the east side according to media/engineering is in rock and not landfill; only the west side of the island is on landfill.
 
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printer

Well-Known Member
Florida building collapse: Report from 2018 warned of 'major damage'
An inspection in 2018 highlighted "a major error" in the original design of an apartment block that collapsed near Miami, Florida, it has been revealed.

The building consultant's report from three years ago came to light in a series of documents made public by the town of Surfside.

The engineer, Frank Morabito, said the lack of proper drainage was "a systemic issue" that stemmed from a flaw "in the development of the original contract documents".

He flagged what he called "major structural damage" to the concrete platform beneath the swimming pool deck.

"The failed waterproofing is causing major structural damage to the concrete structural slab below these areas," he wrote. "Failure to replace the waterproofing in the near future will cause the extent of the concrete deterioration to expand exponentially."

The engineer also referred to "abundant cracking… of columns, beams and walls" in the parking garage.

 

schuylaar

Well-Known Member
@printer

I reviewed the live images and video footage, which revealed that the collapse began at the internal aspect of the edifice. The structural failure appears to have happened at the core of the building, where the horizontal concrete slabs meet the vertical concrete columns and shear walls, which are designed to resist lateral forces. The videos show that shortly after the compromise of the internal structure the building falls away from the ocean to the west, which suggests the concrete slabs disengaged from the internal backbone of the building, causing a "pancake" collapse.

Post-tension reinforcement -- or rebar -- gives 6-8 inch concrete slabs with the high structural integrity; however, building floors are not designed to absorb the load produced by the collapse of a floor. Therefore, when the initial slab fell, this may have caused a buckling effect between floors and the complete collapse of the northeast block of the building.

In live images, we see the vertical elevator shafts and stairwells, which are commonly where the shear walls connect to the horizontal slabs, providing the necessary lateral strength.

The quagmire question now becomes how is only half of the building compromised?


i still don't know what i saw, but what happened was abnormal and i'm glad that someone in the profession is questioning it too.
 
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