I was just a teenager during 1988 Armenian earthquake that leveled entirety of city of Stepanakert (https://en.wikipedia.org/wiki/1988_Armenian_earthquake https

I was just a teenager during 1988 Armenian earthquake that leveled entirety of city of Stepanakert (https://en.wikipedia.org/wiki/1988_Armenian_earthquake https://en.wikipedia.org/wiki/1988_Armenian_earthquake) but I remember one of the most damning pictures on the TV and newspapers (even in USSR!) was a huge piece of load-bearing concrete from the collapsed panel building with "БРАК" (FAULTY or didn't pass QA) written on it in black marker/spray paint. Yet it was still used in the building. That earthquake was a significant part of political instability that contributed to USSR demise.