1406.2.1 Type I, II, III and IV construction.
BC § 1406.2.1
In buildings of Type I, II, III and IV construction, exterior wall coverings shall be permitted to be constructed of combustible materials in accordance with Section 1406.2.1.1, subject to the following limitations: 1. Combustible exterior wall coverings shall not exceed 10 percent of an exterior wall surface area on any given story. Such combustible exterior wall covering shall not be permitted on exterior walls where the fire separation distance is 5 feet (1524 mm) or less.
2.Combustible exterior wall coverings shall be limited to 40 feet (12 192 mm) in height above grade plane.
3.Combustible exterior wall coverings constructed of fire-retardant-treated wood complying with Section 2303.2 for exterior installation shall not be limited in wall surface area where the fire separation distance is 5 feet (1524 mm) or less and shall be permitted up to 60 feet (18 288 mm) in height above grade plane, regardless of the fire separation distance.
4.Wood veneers shall comply with Section 1405.5.
5.Combustible exterior wall coverings shall not be permitted on buildings of Type IV construction utilizing CLT or SCL complying with Section 602.4.
6.Combustible exterior wall coverings shall not be permitted at exterior balconies in accordance with Section 1406.3.
