The provisions of Section 1104 of IEBC are adopted by reference with the following modification:
1. Revise Section 1104.1 to read:
"1104.1 Smoke alarms in existing portions of a building.
Where an addition is made to a building or structure of a Group R or I-1 occupancy, the existing building shall be provided with smoke alarms as required by Section 504.8 of the Chicago Minimum Requirements for Existing Buildings."