Need to Know About the Miami Building Collapse?
Principia Scientific International’s Joe Olson appears with Jim Fetzer and Carl Herman to discuss the bizarre building collapse this week in Miami, Florida and what may be behind it.
The collapse of a 12-story condominium near Miami may the only the first of many to come, where Joe Olson, a structural and civil engineer, explains that it was built in 1981 using a style of construction that relies upon pressure from the sides, where exposure to the elements on the Atlantic appears to have led to corrosion of crucial elements, the failure of which led to the collapse.
The problem is that many of the high-rise buildings in Miami were built using similar designs and can be expected to fail in the near term, A BBC journalist aboard the HMS Defender confirms that intrusion into Crimean waters was a deliberate provocation, one that could have devastating consequences, but which may be a diversion from attacks by the US-UK-Israel upon Iran, More to come and in short order, no doubt.
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Joseph Olson
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First 9 minutes is brief introduction to post tension concrete and some limitations. I will provide a detailed report soon, in the meantime note, “two failure modes are anchor wedge corrosion and tendon stress yield (over time)”
“Post Tension Concrete: Five Decades of American Building Construction” at ConcreteConstruction.net
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Terry Bradshaw
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Pure Technologies, a Calgary based company, developed a monitoring system for post tension cable construction in the 1990’s, using the acoustic signature of cable strand failure as the basis of their technology. It was an advance warning system that would give many years notice prior to absolute failure and it’s deployment would have likely saved this building from catastrophic failure. Remedial action could have been undertaken when strand failure became critical. Every PTC building should have this or similar technology within its maintenance criteria. It is highly likely that every PTC building is about to become uninsurable and virtually worthless.
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Joseph Olson
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Thanks for the tip, will review and add to my report. I don’t want to condemn PTC construction, but we do have clear evidence of dangerous limitations.
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Terry Bradshaw
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There was a major PTC office tower failure in Montreal in the 90’s and several heated parkade structures in Calgary also had cable failure. The causes were attributed to poor construction techniques that damaged the sheathing on the cables and also corrosion from road salts. The remedy incorporated rubber flooring in the parkades to halt the salt penetration. Several major lenders refused to finance PTC buildings and also refused to renew mortgages when they matured. The problems have been known for a very long time.
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Dave Corban
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Yes I agree… same s*** as 9/11. You might find this interesting too… https://rumble.com/vj060x-haarp-activated-buildings-collapse-400-feet-from-ivanka-trump-and-jarred-ku.html?fbclid=IwAR38PHviFomgklH0K5PbkclbEuAsR3y2pZkLY0aZo8dX0AwpOl0fxTqs7is
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jack
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How do they explain the sequential flashes of light as the building collapses ? Looks like controlled demolition to me. Look carefully at this CCTV footage. https://www.youtube.com/watch?v=x2m5jVo_j_M
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Joseph Olson
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There would be electrical arcs as tenant panels were ripped out, and Fire Codes require flashing strobe lights (battery backup) for the hearing impaired. The sound of that much material could be mistaken for explosives, but collapse and explosives have different seismic signatures, evidence pending.
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Michael Clarke
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This is what you get with the Almighty Dollar. It gets to the point that My dollar is bigger than yours and the hell with the consequences!
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Joseph Olson
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There are rumors that the John McAfee hard drives with 31 terabytes of government corruption evidence were in the Champlain Tower. In future interview and report, we will explain how easy it is to implode PTC buildings. Meanwhile as proof of controlled demolition, see who is saying it is FALSE
https://snopes.com/fact-check/john-mcafee-files-miami-building/
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Lloyd Slezak
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Champlain Towers was standard reinforced concrete frame construction. Not post tensioned.
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Carbon Bigfoot
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Lloyd do you have confirmed knowledge of your statement? Viewed design or as-built drawings, or were you personally involved with the construction?
In viewing the videos on Rumble I noticed:
That the balconies appear to have 12 inch center BW rebar reinforcement standard construction.
There appeared to be hollow core pre-stressed concrete slab construction as opposed to pre-tensioned poured floors with anchor wedge suggested by Joe Olson.
I noticed exposed 3/8 rebar which is used in the hole core slabs.
In the 90s designed an office with second floor hollow core and the Owner and his contractor did not line the labeled cores as called for in the manufacture’s installation drawings and had to core the shit out of the slabs or run utilities fully exposed. I learned of this years later. They thought they knew everything. Fortunately it had significant structural beam grid below as slabs had built-in steel tabs to be welded anchorage. Never allowed Owner’s to supervise construction of my projects ever since that episode.
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Carbon Bigfoot
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https://www.townofsurfsidefl.gov/docs/default-source/default-document-library/town-clerk-documents/champlain-towers-south-public-records/8777-collins-ave—structural-field-survey-report.pdf?sfvrsn=882a1194_2
https://www.enr.com/articles/51994-engineers-try-to-fathom-factors-leading-to-deadly-champlain-towers-collapse
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Lloyd Slezak
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Carbon Bigfoot
https://www.townofsurfsidefl.gov/docs/default-source/default-document-library/town-clerk-documents/champlain-towers-south-public-records/8777-collins-avenue—preliminary-review-plans-for-40-year-re-certification.pdf?sfvrsn=9e2a1194_2
I am a licensed and practicing Civil Engineer. The documents linked above provide clear representation of the original construction approach for Champlain Towers. Further, one can observe photos of the wreckage and see the quantities of rebar dislodged from the slabs. Not a post tensioned structure.
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