Originally posted by: Kraco
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...
As far as we've seen there has never been a high enough level of Reiatsu released in the Human World to cause any kind of structural damage. Even when Ichigo and Ishida went upon against the Menos Grande they didn't cause any damage to the world around them, same for when Byakuya and Renji showed up (although they probably were wearing the Reiatsu Dampeners...)

Also, I don't quite understand what the structures in the Human World are made out of, if not some kind of spirit particle. Ok, maybe the dirt and stone is simple matter, but surely the people (and maybe plants and animals?) are made out of Reiatsu of some kind! I just think it's a matter of not seeing high Reiatsu levels in the Human world yet, though the Menos battles might prove otherwise.