N.Y. Lab. Law § 265

§ 265. Fire wall. "Fire wall" means a wall which subdivides a building\nor separates buildings to restrict the spread of fire, and which starts\nat the foundation and extends through all stories to or above the roof\nas may be specified in the rules of the board. The board shall determine\nand specify in its rules the material and the manner of construction and\nerection of fire walls and the nature and extent of the protection to be\nafforded to openings therein.\n