Originally posted by: Budweineken
We've seen structures shatter simply because of the spirit pressure, so that's the reason behind limiting their powers, nothing to do with hollows...
Mayuri said all the structures in SS are made entirely out of spirit particles. That might be the reason why structures there suffer damage from high spirit pressure. That might not be the case in the real world, though. Well, I don't remember if we have seen such a scene in the real world, so if we have, then I'm obviously wrong...