The provisions of Section 1405 of IBC are adopted by reference with the following modifications:
1. Revise Section 1405.1.1 to read:
"1405.1.1 Types I, II, III and IV construction.
On buildings of Types I, II, III and IV construction, exterior wall coverings shall be permitted to be constructed of combustible materials, complying with the following limitations:
1. Combustible exterior wall coverings shall not exceed 10 percent of an exterior wall surface area where the fire separation distance is 15 feet (4572 mm) or less.
2. Combustible exterior wall coverings shall be limited to 40 feet (12 192 mm) in height above grade plane.
Exceptions:
1. Metal composite material (MCM) systems complying with Section 1406.
2. Exterior insulation and finish systems (EIFS) complying with Section 1407.
3. High-pressure decorative exterior-grade compact laminate (HPL) systems complying with Section 1408.
4. Exterior wall coverings containing foam plastic insulation complying with Section 2603.
3. [Reserved.]
4. Wood veneers shall comply with this section and Section 1404.5."
2. Revise Sections 1405.1.1.1.1 and 1405.1.1.1.2 to read:
"1405.1.1.1.1 Fire separation 15 feet or less.
Where installed on exterior walls having a fire separation distance of 15 feet (4572 mm) or less, combustible exterior wall coverings shall not exhibit sustained flaming as defined in NFPA 268.
1405.1.1.1.2 Fire separation greater than 15 feet.
For fire separation distances greater than 15 feet ( 4572 mm), any exterior wall covering shall be allowed that has been exposed to a reduced level of incident radiant heat flux in accordance with the NFPA 268 test method without exhibiting sustained flaming. The minimum fire separation distance required for the exterior wall covering shall be determined from Table 1405.1.1.1.2 based on the maximum tolerable level of incident radiant heat flux that does not cause sustained flaming of the exterior wall covering."
3. Revise Table 1405.1.1.1.2 by deleting all entries for a fire separation distance of 15 feet or less, and revising the entry for "16" feet to read "greater than 15."
(Amend Coun. J. 12-14-22, p. 58278, Art. III, § 7)