Personally, I would still allow the "expansion joint" we made using a flexible raceway like greenfield or sealtight between the runs of RMC, for example at the building expansions.
How about you other AHJ's?
I would and I have. I have seen EMT used in buildings that have a full structural expansion joint right in the middle of them (my city hall, for example), and I personally allowed for flex to be used as an expansion fitting.
