International Building Code Section 403.2.1.1 is hereby amended as follows:

403.2.1.1. Type of construction.

The following reductions in the minimum fire-resistance rating of the building elements in Table 601 shall be permitted as follows:

1. For buildings not greater than 420 feet (128 m) in building height, the fire-resistance rating of the building elements in Type IA construction shall be permitted to be reduced to the minimum fire-resistance ratings for the building elements in Type IB.

Exception: The required fire-resistance rating of structural frame and bearing walls shall not be reduced.

2. In other than Group F-1, H-2, H-3, H-5, M and S-1 occupancies, the fire-resistance rating of the building elements in Type IB construction shall be permitted to be reduced to the fire-resistance ratings in Type IIA.

3. The building height and building area limitation of a building containing building elements with reduced fire-resistance ratings shall be permitted to be the same as the building without such reductions.