Miami Beach, Champlain Towers South apartment building collapse, Part 12 60

[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

SF Charlie
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[SFCharlie]

Although no test results from cores have been revealed

1. Yes, except for some PR from NIST, nothing new has been revealed.
2. Core were taken in 2020 and (some) results were presented to the apartment association and can be found in "Minutes of BOARD OF DIRECTORS MEETING held Wednesday, October 14th, 2020 at 7:00 PM".

I understand that more core were drilled and someone (Demented? or YouTuber BuildingIntegrity?) has found photos of them, but I don't know where?





SF Charlie
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[SFCharlie]

Found them:
(hidden on the plan of work performed)

SF Charlie
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[SFCharlie]

From the core samples above, YouTuber BuildingIntegrity suggests that a significant extent of the pool deck had delaminated.

SF Charlie
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[SFCharlie]

I could not find:
"Minutes of BOARD OF DIRECTORS MEETING held Wednesday, October 14th, 2020 at 7:00 PM"
in the City of Surfside Archive, but NPR had a link to the .pdf in a memo sent to the condo board in October 2020


SF Charlie
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[SFCharlie]

PLEASE STOP POSTING IN THIS PART 12 PLEASE
Please allow me to move the discussion to Miami Beach, Champlain Towers South apartment building collapse, Part 13, Thank-you.
Someone Please close this post to new postings, or message me how to do this, Thanks.


SF Charlie
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[Jeff Ostroff]

One thing no one has mentioned is that when a contractor last year took those core samples, it appears they cored right through rebar. I always thought this was a no-no. In fact, Surfside sent out guidelines to building owners stating to use GPR (Ground Penetrating Radar) first before taking core samples, to avoid hitting rebar. It is no strange coincidence to me that the core sample which penetrated the rebar was taken just inches to the left of column M11.1, right next to the planter box. You have seen me point out in several of my videos since June about how they left that core site open with Bob's barricade there, and in some other MLS photos, seems like no covering was ever put back on the 3' x 3' exploration site. these core sites are required to be filled back in and returned to the state they were in before the sampling, pretty much the same day if possible.

Basement Floor (lowest level below-grade)
o Perform GPR (ground penetrating radar) to determine slab thickness and to locate
reinforcing steel, if reinforced (conventional slab on ground or reinforced slab on
ground).
o, Take one set of three concrete cores (after GPR to avoid reinforcing steel) for
compressive strength testing per AC! standards and one core for petrographic
examination per ICRI standards. Repair cored holes in accordance with ICRI industry
standards.
o GPR column for vertical reinforcing steel and lateral ties (measuring spacing) for the full
height of that lift. Verify vertical column reinforcing splices,
o Take one VA" diameter maximum 3"-depth core In column (after GPR to avoid
reinforcing steel) for compressive strength testing per ACI standards and petrographic
examination per ICRI standards. Immediately repair cored holes in accordance with ICRI
industry standards.

 

[AusG]

> moved to thread 13
Thread 13