So then you ask, what about buildings that were older? Well.
I can give you the example of Conjunto Residencial Caribe, AKA, Residencias Caribe, AKA, a Z-shaped complex, consisting of four sections and two cylindrical stairwells that are now the only thing standing. You can easily recognize it in an aerial view of Caraballeda, at the entrance of Tanaguarena. My grandmother bought an apartment there, I think, in the 1980s. I'm not sure because she died of dementia last year and, based on what I remember from the times I visited as a child, the whole construction was very 1980s in how it was built.
(I'm also a little iffy about 1980s Venezuela because 1) we had our first dollar devaluation so we were kinda losing the oil bonanza momentum of the 1970s, and 2) the two main presidents of this period, Luis Herrera Campins and Jaime Lusinchi, were not very good, so some shortcuts may have been taken in the construction of Residencias Caribe. But not as many as during Chávez.)
During the Vargas tragedy (the 1999 tragedy, ya know, big flooding that killed many), the building sustained a lot of damage that was not properly repaired, specially the underground parking lots. Many people sold their apartments for cheap... These were meant to be holiday flats, after all. And nobody wanted to spend a holiday in an area that, they knew, would flood again. Grandma kept hers... I think her mind was already going during the 2000s (that proud, sharp woman hid her symptoms until it was too late), and she was running out of steam, so... there were other things to worry about. Then again, maybe she just wanted the family to still enjoy the apartment... And we did. Sometimes my uncle borrowed it, sometimes my parents and I... It was nice, even if it was always very dusty.
In any case, there were new floodings in 2008. Many new people bought the apartments for cheap, and Chávez gave them money to finish paying this or that place, including Residencias Caribe. The last time I was there, the pool was no longer usable, and neither was the elevator, because there simply was no money to repair any of it... Same with the parking lots. This kind of thing has to either come from the owner of the building or by the neighbors' association, but if the neighbors have no money, then... Where was the building owner? And where were government officials forcing the owner and the neighbors to repair this?
So, bottom line, the building was... Well, very damaged.
My family is happy that we never sold the apartment. I am happy that we also didn't rent it out, and that it was completely empty at the time it crumbled down. Seeing the families who are now digging through the rubble to retrieve dead bodies, I am happy that we didn't contribute to the death toll.
But even then, you can tell Residencias Caribe was better built than any of the buildings over at Urbanismo Hugo Chávez. Even if towers B and C fell down, Towers A and D are still almost walkable (meaning that people can, and have, walked down to the basements to search for victims), and the stairs, which is where most people ran towards, were left intact... I'm pretty sure that saved a few lives.
The buildings at Complejo Hugo Chávez crumbled down before anybody had a chance to understand what was happening. The entire structure broke down, and you can't understand what the building looked like before... People are having to guess which floor they're digging based on little pieces of the tiles. Other, newer buildings crumbled down almost as if they had fainted. Rescuers have described these buildings as "pancaked". OPP 26 was originally left standing, but its structural damage was so severe that it trapped several people inside, so rescuers had to wait until it crumbled down to finally do something. I saw video of a woman in the street begging for her family to be rescued, as the screams of those inside could still be heard.
Do you understand the difference?