For special requirements for Group S aircraft hangars, see Section 412.4.1.For special requirements for Group H occupancies, see Section 415.6.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.Open parking garages complying with Section 406 shall not be required to have a fire-resistance rating.Load-bearing exterior walls shall also comply with the fire-resistance rating requirements of Table 601.OCCUPANCY GROUP A, B, E, F-2, I, R, S-2, U i TABLE 602 FIRE-RESISTANCE RATING REQUIREMENTS FOR EXTERIOR WALLS BASED ON FIRE SEPARATION DISTANCE a, d, g, h FIRE SEPARATION DISTANCE = X (feet) Not less than the fire-resistance rating as referenced in Section 704.10.Not less than the fire-resistance rating based on fire separation distance (see Table 602).Not less than the fire-resistance rating required by other sections of this code.In all occupancies, heavy timber shall be allowed where a 1-hour or less fire-resistance rating is required.Fire-retardant-treated wood members shall be allowed to be used for such unprotected members. Except in Group F-1, H, M and S-1 occupancies, fire protection of structural members shall not be required, including protection of roof framing and decking where every part of the roof construction is 20 feet or more above any floor immediately below.Roof supports: Fire-resistance ratings of primary structural frame and bearing walls are permitted to be reduced by 1 hour where supporting a roof only.
Roof construction and associated secondary members (see Section 202) Nonbearing walls and partitions Interior dįloor construction and associated secondary members (see Section 202) Primary structural frame f (see Section 202) TABLE 601 FIRE-RESISTANCE RATING REQUIREMENTS FOR BUILDING ELEMENTS (HOURS) BUILDING ELEMENT
0 kommentar(er)
