Fire-resistance rules for outside walls based on distance

Table 602 of the International Building Code is amended to read as follows: TABLE 602 — FIRE-RESISTANCE RATING REQUIREMENTS FOR EXTERIOR WALLS BASED ON FIRE SEPARATION DISTANCE a, d, g FIRE SEPARATION DISTANCE = X (feet) TYPE OF CONSTRUCTION OCCUPANCY GROUP H e OCCUPANCY GROUP F-1, M, S-1 f OCCUPANCY GROUP A, B, E J , F-2, I, R i , S-2, U h X < 5 b All 3 2 1 5 ≤ X < 10 IA Others 3 2 2 1 1 1 10 ≤ X < 30 IA, IB IIB, VB Others 2 1 1 1 0 1 1 c 0 1 c X ≥ 30 All 0 0 0   For SI: 1 foot = 304.8 mm. a. Load-bearing exterior walls shall also comply with the fire-resistance rating requirements of Table 601. b. See Section 706.1.1 for party walls. c. Open parking garages complying with Section 406 shall not be required to have a fire-resistance rating. d. The fire-resistance rating of an exterior wall is determined based upon the fire separation distance of the exterior wall and the story in which the wall is located. e. For special requirements for Group H occupancies, see Section 415.6. f. For special requirements for Group S aircraft hangars, see Section 412.3.1. g. Where Table 705.8 permits nonbearing exterior walls with unlimited area of unprotected openings, the required fire-resistance rating for the exterior walls is 0 hours. h. For a building containing only a Group U occupancy private garage or carport, the exterior wall shall not be required to have a fire-resistance rating where the fire separation distance is 5 feet (1523 mm) or greater. i. For a Group R-3 building of Type II-B or Type V-B construction, the exterior wall shall not be required to have a fire-resistance rating where the fire separation distance is 5 feet (1523 mm) or greater. j. Group E occupancy used for daycare purposes having an occupant load of less than 20 may have exterior wall and opening protection as required in the IRC (Table R302.1). ( Ord. No. 5508 , § 3, 2023) _____