N.Y. Multiple Dwelling Law § 58

§ 58. Incombustible materials. Except as may be specifically provided\notherwise in this chapter, all required incombustible materials,\nincluding fireproofed wood, shall be capable of withstanding\nsuccessfully standard fire tests as prescribed by the building code. In\nthe absence of any such prescribed requirements, the department shall\nhave the power to make supplementary regulations relative to standard\nfire tests for incombustible materials.\n