Section 903.3 of the International Fire Code is hereby amended by the addition of a new Section 903.3.9 – Fire sprinkler zones:

903.3.9 Zones. When fire walls and/or horizontal exits are provided the sprinkler system shall be zoned to coincide with the fire walls and/or horizontal exits.

Exception: Sprinkler zoning is not required in existing construction, provided that fire alarm initiating devices are provided that would provide the same level of occupant notification that a zoned sprinkler system would.