Complex Structural Connection Design

[Nistrum]

wow, what were they using it for? antitank walls??

[Feign]

wow, what were they using it for? antitank walls??

Seconded, this looks like it's a wall section for a munitions bunker or a launch pad.

[TesseractDzyn]

wow, what were they using it for? antitank walls??

Not entirely sure. This is a column-to-beam connection. My guess is that that need a super-strong rebar connection for a long-span beam. Some of the crazier cantilevered creations by architect Santiago Calatrava are almost all rebar with just a little bit of concrete covering the whole thing!