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Item 6.C. of these published rules http://rules.tamu.edu/PDFs/34.06.02.M1. ... 1531332254 list "categorically prohibited" premises.

Beyond that, the first three locations you mentioned were not 30.06 posted the last time I entered them (which is more than six months ago). Don't know about the fourth. I suppose the Zone Club would be off limits during a sporting event.

Edited to add: Other than some individual laboratory room full of chemicals or radioactive material, I would be surprised to find any regular campus building that was posted. Campus carry has not been a big deal, post-implementation (surprise, surprise).