[BStyles]

This isn't cladding, the core is actually made of concrete. The steel cage is what connects the floor beams to the outer columns, and that will be covered over in reinforced concrete and steel, hence the rebar. Both run to the top of the building.

@Zensteeldude: Are there exhaust vents or intake vents on the mechanical floors at the top of the building? In some of the renderings, it looks that way.