The space is divided into six pie wedges and the floor grate is aligned separately to each wedge. Having said that, the alignment isn't all that accurate. I basically free transformed a huge texture by eye to get it in perspective, but it stretches WAY beyond the boundaries of the image to do that and it was just a pain in the ass. If there's a better way of doing it, I haven't learned it yet.
what would happen if you just changed the design to be a 6"x6" square grid like an industrial platform that allowed you to see something below it. Like your platform idea but more subdued.
That way it can be structured or welded to follow a radial pattern from the center of the core or just not aligned to anything at all and just square it off at odd angles everywhere.