So close, yet not the same. Barriers are not partitions. Their obvious purpose is to prevent the ready and quick passage of smoke. Their difference is in the fire resistance properties:
- Smoke Barriers, Building Code Section 709.3 "A 1 hour fire resistance rating is required for smoke barriers."
- Smoke Partitions, Building Code Section 710.3 "unless required elsewhere in the code, smoke partitions are not required to have a fire rating."
This can make a big impact in your building construction, so pay close attention when reading into those fire rating requirements. For more details, exceptions, and commentaries, pick up that arm wrestling code book of yours.. and good luck!