803.11 Interior finish requirements based on group.
BC § 803.11
Interior wall and ceiling finish shall have a flame spread index and smoke-developed index not greater than that specified in Table 803.11 of this code for the group and location designated. Interior wall and ceiling finish materials tested in accordance with NFPA 286 and meeting the acceptance criteria of Section 803.1.2.1 of this code, shall be permitted to be used where a Class A classification, in accordance with ASTM E 84 or UL 723, is required. Table 803.11Interior Wall and Ceiling Finish Requirements by Occupancy k GroupSprinklered lNonsprinkleredInterior exit stairways, interior exit ramps and exit passageways a, bCorridors and enclosure for exit access stairways and exit access rampsRooms and enclosed spaces cInterior exit stairways, interior exit ramps and exit passageways a, bCorridors and enclosure for exit access stairways and exit access rampsRooms and enclosed spaces cGroupSprinklered lNonsprinkleredInterior exit stairways, interior exit ramps and exit passageways a, bCorridors and enclosure for exit access stairways and exit access rampsRooms and enclosed spaces cInterior exit stairways, interior exit ramps and exit passageways a, bCorridors and enclosure for exit access stairways and exit access rampsRooms and enclosed spaces cA-1 & A-2BBCAA dB eA-3 f, A-4, A-5BBCAA dCB, E, M, R-1BBBAABFBCCABBHBBC gAABI-1BCCABBI-2BBB h, iAABI-3AA jCAABI-4BBB h, iAABR-2BBCAACR-3CCCCCCSBCCABCUNo restrictionsNo restrictions For SI: 1 inch = 25.4 mm, 1 square foot = 0.0929 m 2 . a. Class C interior finish materials shall be permitted for wainscotting or paneling of not more than 1,000 square feet (92 m 2 ) of applied surface area in the grade lobby where applied directly to a noncombustible base or over furring strips applied to a noncombustible base and fireblocked as required by Section 803.13.1. b. In other than Group I-3 occupancies in buildings less than three stories above grade plane, Class B interior finish for nonsprinklered buildings and Class C interior finish for sprinklered buildings shall be permitted in interior exit stairways and ramps. c. Requirements for rooms and enclosed spaces shall be based upon spaces enclosed by partitions. Where a fire-resistance rating is required for structural elements, the enclosing partitions shall extend from the floor to the ceiling. Partitions that do not comply with this shall be considered enclosing spaces and the rooms or spaces on both sides shall be considered one. In determining the applicable requirements for rooms and enclosed spaces, the specific occupancy thereof shall be the governing factor regardless of the group classification of the building or structure. d. Lobby areas in Group A-1, A-2 and A-3 occupancies shall not be less than Class B materials. e. Class C interior finish materials shall be permitted in places of assembly with an occupant load of 300 persons or less. f. For places of religious worship, wood used for ornamental purposes, trusses, paneling or chancel furnishing shall be permitted. g. Class B material is required where the building exceeds two stories. h. Class C interior finish materials shall be permitted in administrative spaces. i. Class C interior finish materials shall be permitted in rooms with a capacity of four persons or less. j. Class B materials shall be permitted as wainscotting extending not more than 48 inches above the finished floor in corridors and exit access stairways and ramps. k. Finish materials as provided for in other sections of this code. l. Applies when protected by an automatic sprinkler system installed in accordance with Section 903.3.1.1 or 903.3.1.2.
