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Feds Finally Reveal Why Surfside/Miami Condo Collapsed Champlain Towers​

The Feds (NIST) just released their final technical report on the Surfside condo collapse, and it completely rewrites the timeline of what happened to Champlain Towers South Condo. According to the National Institute of Standards and Technology (NIST), the structural failure didn’t start on June 24, 2021—it actually began three weeks earlier in early June. In this video, Jeff Ostroff breaks down the forensic engineering data, failure sequence, and shocking design flaws that left this building with zero margin of safety from day one.

Recommended Book: Negligence! Averting Disaster at Your Building: Lessons Learned from the Champlain Towers Collapse by Greg Batista: https://amzn.to/43YXBw6

🔍 THE THREE-WEEK FAILURE SEQUENCE.

This was not a sudden event. NIST’s final investigation reveals a slow-motion progressive failure: The Initiation: In early June 2021, two critical slab-column connections beneath the pool deck failed in the parking garage.

The Domino Effect: As those two columns failed, the concrete slab began to sag. The surrounding structure temporarily absorbed the weight, shifting massive, unintended loads onto neighboring connections that were already structurally compromised. The Final Trigger: By June 24th, the southern portion of the pool deck had detached from the support wall, collapsing into the garage, taking out the main building's structural supports.

🏗️ THE ROOT CAUSES: DESIGN & DEVIATIONS
NIST investigators determined that Champlain Towers South was vulnerable from the moment it was built in 1981 due to two primary factors:

Severe Design Flaws: Portions of the pool deck and parking slab provided less than half of the code-required structural strength.

Construction Deviations: The physical building did not match the blueprints, featuring misplaced reinforcing steel (rebar) and fewer rebar crossovers than specified. Over 40 years, these severe deficiencies were compounded by unapproved added loads (including heavy pool-deck planters, unmapped sand bedding, and pavers) and by severe, long-term salt-air concrete corrosion.

🚫 WHAT THE FEDS EXPLICITLY RULED OUT:

Final report officially rules out popular theories as contributing factors to the collapse:

❌ Nearby construction vibrations (from neighboring luxury builds)
❌ Sinkholes, foundation settling, or soil failure
❌ Explosions or accidental overloads from the active roofing project. Let me know what you think about these final forensic findings in the comments below.

If you're an engineer, contractor, or condo owner, how do you see these structural findings changing building inspections moving forward?

👇 TIMESTAMPS 👇

00:00:00 Introduction to Champlain Towers Collapse
00:00:54 NIST Reveals Surfside Condo Collapse began 3 weeks before
00:03:12 Animation of how the Champlain Towers pool deck collapsed
00:06:05 Early signs of punching shear failure at slab column K13.1
00:07:31 Progression of CTS pool deck failure/collapse toward building
00:08:45 Too much spacing between some garage columns?
00:10:44 How the Champlain Towers pool deck collapse caused the building to collapse
00:13:10 Chapter 2: Failure Initiation, Witnesses see cracks before Miami Condo Collapse
00:18:45 9 Hours before the collapse, witnesses see water leaking in the parking garage
00:20:07 Summary of pre-collapse clues seen by witnesses
00:25:05 Minutes leading up to Surfside collapse
00:25:31 Causes of pool deck slab-column connection failures
00:26:45 Mistakes made by the builder: errors in rebar placement
00:27:48 !996 addition of pool deck pavers, planters, palm trees, sand added more weight
00:29:57 Changes to building safety laws since Champlain Towers Collapse
00:36:08 Condo owner challenges with new laws since condo collapse
00:38:27 Top 10 financial/regulatory challenges for condo owners
00:40:13 Structural Integrity Reserve Study (SIRS) for condos
00:43:16 How the collapse progressed through Champlain Towers middle building section
00:44:47 Duplication concrete testing of pool deck/column slab failures
00:47:08 Main causes and contributing factors to pool deck failures
00:48:40 How BEAM A failures of pool deck caused condo collapse
00:51:39 Analyzing security cam video of Surfside condo collapse
00:52:59 Progression of pool dek collapse into Champlain Towers South building
00:53:37 Ch 4: Spread of failure through the condo tower
00:53:53 Ring camera video inside Unit 711 of Champlain Towers South condo
00:55:29 Security camera video from inside Champlain Towers hallway shows collapse
00:56:48 Frame-by-frame analysis exterior security cam video
00:57:17 Why collapse of middle tower not cause western part to collapse
00:59:39 Jeff Ostroff explains why western side did not collapse
01:02:23 How condo collapse spread from middle to east tower
01:06:01 Ch. 5: Why a flawed Champlain Towers stood for 40 years
01:09:12 Thing that did not cause the Champlain Towers condo collapse
01:13:32 Top 10 reasons for Champlain Towers South Condo Collapse

 
It was only 74* this morning inBero and last night I was watching videos on my porch with tge ceiling fan on and was quite comfortable. I agree diring the dau it is brutally.hot around 93* yesterday. Today we got rain to cool down.

Fatrat, what coty are you located?
 
NYC Pfizer Building is Collapsing... Who Screwed Up?"
See why the former Pfizer headquarters in New York City faced catastrophic structural failure during a condo conversion. Learn how insane engineering failures caused support column buckling.

This breakdown examines the specific engineering oversights that led to the 21st floor collapsing and the upper levels sinking and sagging. If you are interested in construction safety or forensic engineering, this analysis details the critical errors identified during the investigation into these building safety lapses.

We review the evidence regarding the missing steel reinforcement that left the structure vulnerable to collapse. Understanding these construction defects provides insight into how massive projects can fail when safety protocols are bypassed or ignored. See the reality of the structural failure and the regulatory consequences that followed.

Subscribe for weekly engineering failure breakdowns, and leave a comment below explaining which building project you want us to investigate next.

00:00 Introduction to NYC Pfizer Building Partial Collapse
00:51 Viral short video showing buckled columns in the Pfizer Building
01:17 What was the construction company doing to the building
01:55 Surveying damage and architecture from outside the building
04:14 Analysing collapsed column damage from outside
05:56 Sagging Floors 22 and above the collapsed columns
06:29 Support columns not reinforced or jacketed!
09:25 How do they fix sagging floors and buckled columns?
11:50 Analyzing photos of shoring poles emergency repair
14:03 Analyzing shoring up of the Pfizer building
15:07 Building code violations and fines on the Pfizer Headquarters condo remodeling project
18:22 Top 5 possible causes of this partial building collapse
21:03 How should contractors shore up buildings under construction and remodeling?
23:30 What should be done to improve the Pfizer Building in NYC?

 
If we are to believe the 9/11 Twin Towers narrative, then if this floor collapses, the entire building will pancake all the way down into its footprint.
 
Someone_else said:
If we are to believe the 9/11 Twin Towers narrative, then if this floor collapses, the entire building will pancake all the way down into its footprint.
Click to expand...
How a building comes down, depends on dozens of factors - most of which cannot be known.

Take the vid above. The 60-degree fold in that I-beam...first, as Jeff suggested, documents seem to indicate that those beams were to be jacketed. Not done.

THEN...seems there's deep corrosion in that beam. That was no doubt not accounted for - and should have been, that's a goof on the part of the (political) designing and overseeing engineers.

In the WTC, one issue we know is that while the engineering specifications, called for asbestos jacketing of support beams, that was left off - because of a change in regulation, outlawing asbestos insulation. So, fuggit, they just sprayed the beams with foam, buttoned things up, and called it good.

NYC, construction and graft are hand-and-glove.

Had the new floors not been attached to an existing wing, as shown, they probably would have come down evenly...yes, and pancaked.

Critics can call the explanation of how the towers came down, ridiculous. I'm not qualified to judge; but the story of failing columns and pancaking, sure makes a lot moar sense than the counter-theory of Dick Cheney wiring explosives in there the day before.
 
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