For living quarters the partitions and sheathing shall be of an approved fire resistive construction. The specification for incombustible materials is in subchapter Q (Specifications) of this chapter.
Code of Federal Regulations
[CGFR 65-50, 30 FR 16671, Dec. 30, 1965, as amended by CGD 95-028, 62 FR 51198, Sept. 30, 1997]