Comment on Why were so many people believers in the conspiracy that 9/11 was an inside job
zipzoopaboop@lemmynsfw.com 8 months agoRebar and concrete
Comment on Why were so many people believers in the conspiracy that 9/11 was an inside job
zipzoopaboop@lemmynsfw.com 8 months agoRebar and concrete
remotelove@lemmy.ca 8 months ago
I think that is generally for the floor of each level and for the actual foundation of the structure itself.
The bulk of the primary structure core is just steel, I think. Skyscrapers need to bend and flex with the wind or during earthquakes. (I am not an architect, but I have watched a few TV shows about this stuff in the past. I think.)