Nice Model and article from NY Times titled "The Surfside Condo Was Flawed and Failing. Here’s a Look Inside."
https://www.nytimes.com/interactive/2021/09/01/us/miami-building-collapse.html
Edit: Warning for some, No mention on Top First....... [pumpkin]
Thank you for posting that...
Very Interesting! Attached is the paper "Resistance of Flat-Plate Buildings against Progressive Collapse. I: Modeling of Slab-Column Connections"
I am sure the other papers are equally interesting too. I would say this one is a must read as far as CTS and RC flat slabs prior to 1989 code...
Be careful what you ask for? Are you sure you want all the "do-da's" and powerpoint guru's to invade a forum that has been lean, mean and focused? [ponder]
Now that I have been exposed, I guess I will have to reinvent myself again. Perhaps this time Demented2 ? or perhaps SFDoDa ?
I...
Let's see how good Demented's Math skills are. Question is how many Harbor Freight Winches will it take to right the leaning Millennium Tower on the other Coast? We were leaning 17" before the 100M repair started in May, but now we are leaning 22"?
Perhaps SFCharlie can come up with a...
The following is an excerpt from:
An ACI Standard
Building Code Requirements for Structural Concrete
(ACI 318M-14) and Commentary (ACI 318RM-14)
Reported by ACI Committee 318
Chapter 10 Columns, page 156
I don't know if this is latest or correct source, so I attached document to this post...
I don't have the literary skills of some of posters, so I had to join "Team" do-dads, to get my points across! [bowleft]
I looked in Surfside document trove and could not find it either. I thought that is where it was originally found, as it was buried in the 80 page Association Meeting...
The core sample in this image shows disruption of rebar to concrete bond, but I just don't see the corrosion necessary, in this sample, to cause the expansion. Now with this small of core hole, it is possible drilling core broke it up, but it would seem proper concrete strength, mix and...
Thank You StructuralMadness for you excellent explanation. I think I understand most of what you said, or at least got the big picture? [thumbsup2]
I think it was IEGeezer a ways back in forum that mentioned this area was the area he felt was the most overstressed.
Edit: I assume the...
It appears no vibration needed with that mix, all the aggregate has fallen to bottom with only watery cream 'floating' to the top?
Assuming there is aggregate in that mix?
Re-defines Layered Pour?
SFCharlie, I am guessing the dog balancing spinning 'Flat' plates with the pencil columns was on...
SFCharlie, Yes the HVAC technicians use the compressor on top of the motor to run air tools while on the job! That way they can write off their auto investment! [2thumbsup]
About 30 seconds in, the red car in your video reminds me of the first muscle car era. For Example, I offer this image
More Info: It is actually a Train Blower and he blew head gaskets just blipping the throttle. Not an Engineer Designed Bolt-On! Just a junk yard find, that they decided...
StructuralMadness,
If you go back to when the Association was complaining that 87 Park Construction vibrations were shaking CTS, you have to wonder if they are saying the structure is swaying? What effect was this having on the slab to column connections/joints throughout the building?
You...
I first found "Construction Engineering & Failure Analysis" You Tube videos back either on FIU Bridge Collapse or Hard Rock in NOLA.
After suffering thru one of his videos, I have never listened to his mind work, out loud, in real time on You Tube again.
I highly recommend this Forum, and You...
When Demented was looking thru all the maintenance and repairs, one was the tear out of the pool gutter system and installing a new gutter system which appeared to be higher in elevation than the original one. I think when the raised the perimeter of the pool and hot tub, they added probably...
It seems to me that there should be a larger right of way along Collins Avenue, such that a private owners building’s foundation wall did not affect the public roads?
Or perhaps the public road should include lateral support for roadway?
Or there should be adequate setback from property lines...
