International Building Code Section 909.21.3 is hereby amended to read as follows:

909.21.3 Ducts for system. Any duct system that is part of the pressurization system shall be protected with the same fire-resistance rating as required for the elevator shaft enclosure, and equipment, control wiring, power wiring, and ductwork shall comply with one of the methods specified in Section 909.20.6.1. Ducts shall be in accordance with Section 909.10.2.