I can image a lot of condo boards were having emergency meetings over last weekend.
I won't want to the a board chairman these days.

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There are a bunch of those man-made "palm tree" islands. I'm not sure how many are complete and have building/inhabitants, but I definitely think they are probably even more fool hardy than the Titanic. A giant man-made island built in water out of sand in a seismically active area with enormously tall buildings built on it. I'm guessing Dubai hasn't ever heard the parable of "wise and foolish builders" (building your house on sand or rock).

I did find it interesting that they used an enormous dildo to compact the sand used to build the island prior to building. I kind of feel that means that those islands are fuched from the outset.


That's really horrifying. I can't even imagine the psychological impact of that phone call on the husband for the rest of his life.

Miami condo collapse
 

Burj Khalifa is not on one of the islands. The bedrock under it isn’t Manhattan quality which means it’s on piles but it’s not on a man made island.


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I don't see cables either. The parking garage appears to extend under the pool deck and almost up to the pool. I read they are going to analyze the other sister buildings. I wonder how/if they are monitoring the section that hasn't collapsed(yet).

Ah, OK, well, that's a step up.

I probably wouldn't want to be in either the BK or any of the high rises on the man-made islands.

I’m certainly no expert on hi rise residential nor post tensioned concrete but my understanding of post tension is that it’s called for when there are large unsupported slabs. You wouldn’t need that in a residential tower that has lots of interior partitions.


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Most interior partitions in most high rise buildings are not load bearing.

Post tensioned cables can reduce deflections in large spans if installed correctly.

Frankly, rebar could do a better job with deflections if it were installed differently.

Some brief searching on the life of concrete... the number 100 years often comes up.
The point is concrete has a finite life. Of course it lasts longer with proper design, construction and care. At some point in the near future very many buildings and structures will need to be replaced. I wonder if this incident will bring that up to the public.

http://forums.pelicanparts.com/uploa...1624895929.jpg


I'd like to see some before pics of this area. Looks like entire parking lot/patio pancaked onto lower parking deck/basement of some sort.

My comments about Burj K. were more about pushing the boundaries of cement/rebar too far. This seems more foundation related.

This is not good. Something that too many architects, engineers and builders don't give enough thought to:

http://forums.pelicanparts.com/uploa...1624896508.jpg

The amount of weight (also seen in other pics)riding on 2' columns is astronomical. I wonder what was attached to those columns that you have arrowed?

How is it that so many Roman sites, made from concrete are still standing after 2,000 years?

So the Empire State building will need to be torn down soon? It is 90 years old.

That’s where the parking lot slab used to be. It has fallen 7 or 8 feet, after completely separating from the columns.

Correct but interior partitions are great for burying columns.


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They still aren't load bearing...

No, the columns that can be hidden in the walls are load bearing.


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No ****, Sherlock.

So then what was your point?


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Looks like the ground itself collapsed into a sinkhole.

At first I though those were just to hold up a wrap-around walkway, but that could be the corner of the building.

Really? Geebus...


You implied that the distance between supports for the floor slabs was likely less than needed (ad thus obviating the need for post tensioned cables) because of the presence of interior partitions. That is only true if the interior partitions are load bearing.

I pointed out that most interior partitions were not load bearing.

You then said you could hide a column in them.

See if you can figure it out from there. It's too stupid for me to spend any more time on it.