Section 705. Exterior Walls

705.1 to 705.4 {As in IBC}

705.5 Fire-resistance ratings.

705.5.1 Exterior walls.

Exterior walls shall be fire resistance rated in accordance with Table 601, based on the type of construction, and Table 705.5, based on the fire separation distance. The required fire-resistance rating of exterior walls with a fire separation distance of greater than10 feet (3048 mm) shall be rated for exposure to fire from the inside. The required fire-resistance rating of exterior walls with a fire separation distance of less than or equal to 10 feet (3048 mm) shall be rated for exposure to fire from both sides.

705.5.2 Porch roofs – Abutting.

In new construction, renovation, or replacement of a porch roof that abuts another porch roof fire-retardant-treated wood sheathing shall be installed.

705.6 to 705.11 {As in IBC}