803.13.2 Set-out construction.
BC § 803.13.2
Where walls and ceilings are required to be of fire-resistance-rated or noncombustible construction and walls are set out or ceilings are dropped distances greater than specified in Section 803.13.1, Class A finish materials, in accordance with Section 803.1.1 or 803.1.2, shall be used. Exceptions: 1. Where interior finish materials are protected on both sides by an automatic sprinkler system in accordance with Section 903.3.1.1 or 903.3.1.2.
2.Where interior finish materials are attached to noncombustible backing or furring strips installed as specified in Section 803.13.1.1.













