What are the vertical fins on the exterior of industrial buildings for?

Question

I’m talking about the far right wall of the building in [this](https://www.psindustries.com/wp-content/uploads/2020/08/DJI_0288-scaled.jpg) picture.

In: 8

Answer 1

Those are pre-stressed concrete panels. Ther look like two T’s with their tops connected. The top panel holds up the roof of the building, and the “fins” as you call them stiffen the panel to they don’t crack or buckle.