Tex. Health and Safety Code § 791.031: DEFINITIONS.

(a) In this subchapter, "story" means the space between two successive floor levels of a building, and a basement is a story if the floor level immediately above the basement is at least 10 feet above the grade line on at least one side of the building.

(b) In this subchapter, types of construction are classified as "fireproof," "semifireproof," or "ordinary," as those terms are defined in the most recent edition of the building code published by the successor organization to the National Board of Fire Underwriters.

Acts 1989, 71st Leg., ch. 678, Sec. 1, eff. Sept. 1, 1989.