The doors actually can be used just by editing the .dat files inside of trigger.img. Most of the doors are flagged to never be able to open for the player but in regards to the dorm doors....those do work when editing trigger.img...however, there are "alarms" and "dockers" that prevent you from actually entering those areas and they simply cause you to respawn back to your dorm room.
There are a couple ways to disable them that work....first way is to hex edit the trigger.img and null out the first character of the door codes...or you can fix the dockers by editing the boys dorm lua code which I will release at some point for everyone to play around with.