Miami Beach, Champlain Towers South apartment building collapse, Part 18 30

[SFCharlie]

A continuation of our discussion of this failure. Best to read the other threads first to avoid rehashing things already discussed.
Miami Beach, Champlain Towers South apartment building collapse
Miami Beach, Champlain Towers South apartment building collapse, Part 02
Miami Beach, Champlain Towers South apartment building collapse, Part 03
Miami Beach, Champlain Towers South apartment building collapse, Part 04
Miami Beach, Champlain Towers South apartment building collapse, Part 05
Miami Beach, Champlain Towers South apartment building collapse, Part 06
Miami Beach, Champlain Towers South apartment building collapse, Part 07
Miami Beach, Champlain Towers South apartment building collapse, Part 08
Miami Beach, Champlain Towers South apartment building collapse, Part 09
Miami Beach, Champlain Towers South apartment building collapse, Part 10
Miami Beach, Champlain Towers South apartment building collapse, Part 11
Miami Beach, Champlain Towers South apartment building collapse, Part 12
Miami Beach, Champlain Towers South apartment building collapse, Part 13
Miami Beach, Champlain Towers South apartment building collapse, Part 14
Miami Beach, Champlain Towers South apartment building collapse, Part 15
Miami Beach, Champlain Towers South apartment building collapse, Part 16
Miami Beach, Champlain Towers South apartment building collapse, Part 17


SF Charlie
Eng-Tips.com Forum Policies

 

[MaudSTL]

Tonight the local NBC affiliate reported on today’s meeting.

I would imagine the Miami Herald will weigh in tomorrow.

 

[AusG]

Thanks Maud. Great job as always. Did you see any evidence that NIST has the original of the collapse video from the adjacent building or any other so-far unpublished video? I saw as-builts mentioned. They were missing too from materials available to us the great unwashed.

 

[stcbus]

They mentioned in the meeting getting access directly to the adjacent building's system to compare compression settings, etc. so I would assume so.

 

[Reverse_Bias]

A reminder it's been almost year and a half, and we've yet to see the results of one concrete core sample post collapse.

I know the media and the general public can be irresponsible interpreting evidence and jump to conclusions, but this lack of transparency is still insane.

 

[spsalso]

Is it still a crime scene?


spsalso

 

[MJCronin]

AP NEWSFLASH: The NIST announced that they are pulling out all stops and racing to meet thier 12/2024 deadline

MJCronin
Sr. Process Engineer

 

[MaudSTL]

Thanks Maud. Great job as always. Did you see any evidence that NIST has the original of the collapse video from the adjacent building or any other so-far unpublished video? I saw as-builts mentioned. They were missing too from materials available to us the great unwashed.

Thanks, AusG.

NIST has “rectified” and “digitally adapted” the MDPD video.

Here is the related slide.

 

[MaudSTL]

…we've yet to see the results of one concrete core sample post collapse

I realize that this spreadsheet is a poor resolution because it’s a screengrab from a videoconference, but if you can zoom in on it, you can see what they’ve been doing. They have to follow methodical procedures to hire the contractors they need, so they definitely cannot hit the ground running.

NIST started with wave attenuation testing.

NIST received evidence that seems to include core samples from the civil litigants. They spoke warmly of how helpful the civil litigants were, because they had hired their own independent experts to perform analyses. I wish I could read the transcript of the civil litigants’ hand-offs to NIST.

NIST took their own core samples.

 

[MaudSTL]

Is it still a crime scene?

I am not sure about this. NIST emphasized that they have tight custody controls on all samples they are warehousing. That led me to believe that the samples are considered evidence. But they didn’t explicitly state the site itself was a crime scene. I did notice that the slide about the video rectification states that the video source is MDPD. So if that means the PD still maintains the video as evidence, maybe it also implies that it’s still an open criminal investigation.

 

[MaudSTL]

Good news! The October 19 slide deck has been posted! Now you don’t have to try to zoom in on screengrabs from a videoconference!

Champlain Towers South Collapse NCST Investigation Update
NCST Advisory Committee Meeting
October 19, 2022

https://www.nist.gov/system/files/documents/2022/10/18/CTS_Update_NCSTAC_2022Oct19.pdf

 

[Jeff Ostroff]

That has been up there a few days, I have been going through their slides and agenda

 

[Reverse_Bias]

The digitally rectified video made the building and all the trees on the right side lean.

 

[AusG]

rectified footage

I agree. I'm sure they know their business but it looks utterly wrong to me too. Seems to me they have corrected a far-away thing using an up-close distortion scale. The distance ratios that create the spherical distortion are all wrong for that to work. It is saying that the delta of the distances from centre of pattern to lens and corner of pattern to lens is in the same ratio as the delta of lens to building centre and lens to building corner, just because the pointing angle from lens to those places is the same. I'm...speechless.

 

[spsalso]

I notice that they did not identify the lens center. This is critical, as all corrections would normally be based from that point. Put another way, it's the origin of the x-y axis of that checkerboard. Or should be.


spsalso

 

[MaudSTL]

As a result of its 50 year structural recertification, the Port Royal, a 14-story building located at 6969 Collins Ave about 1.3 miles from CTS, has been evacuated in order to shore a damaged beam being repaired in the garage. Here is an archived version of the Miami Herald’s article, Miami building evacuated near site of deadly condo collapse.

>>>>>Edit: There’s more detail in the archived version of this editorial, Damaged condo beam ‘might support the entire building’? Miami Beach right to evacuate | Editorial. It states in part, “The Port Royale the building is 51 years old. According to the Miami Herald, it had already been through its 40-year recertification and was undergoing repairs as part of a 50-year recertification required by Miami-Dade County. Work on the garage had begun about a month ago. Then engineers noticed a previously identified crack getting bigger and a half inch of “deflection,” or movement, by a main beam.

In a letter to the condominium association, the engineers wrote that the beam that had moved a half inch and others in the third-floor garage “might support the entire building structure.””

 

[SFCharlie]

Thank you Maud.
Mark R. opened a thread on this. Thanks Mark

SF Charlie
Eng-Tips.com Forum Policies

 

[kevinsnn]

on 60 minuets tonight 11/13/22

 

[MaudSTL]

Here’s a link to the 60 Minutes story. No new facts, but it did give Allyn Kilsheimer a chance to reiterate that this is the first time in his career that he has been prevented from having access to materials and the site for testing.

https://www.cbsnews.com/video/surfside-condominium-collapse-60-minutes-video-2022-11-13/#x

 

[Jeff Ostroff]

It did not seem to show very much more than we already have seen, most of the nist footage was given to them by nist, they were not allowed into the warehouse. I saw my buddy Robert Lisman getting interviewed.

 

[MaudSTL]

At the recent read-out, NIST made a very big deal about how carefully they were limiting access to the warehouse of samples. They do not overtly state they are maintaining the chain of custody, but that’s basically how they are treating those materials. They give the impression they are doing both forensic engineering analysis and crime scene investigation. I am not sure why this collapse is being treated differently from the WTC, considering that was obviously a crime.