Tex. Health and Safety Code § 791.022: ADDITIONAL FIRE ESCAPES FOR CERTAIN OFFICE BUILDINGS, STORES, OR INDUSTRIAL PLANTS.

(a) This section applies to:

(1) an office building;

(2) a wholesale or retail mercantile establishment or store;

(3) a workshop or manufacturing establishment; or

(4) an industrial plant.

(b) Each facility subject to this section and Section 791.002 that has a lot area greater than 6,000 square feet shall provide, in addition to the fire escape required by Section 791.002, one additional fire escape for:

(1) each 6,000 square feet of area in excess of the initial 6,000 square feet; and

(2) the area in excess of the largest multiple of 6,000 square feet contained in the facility's lot area if that excess is more than 2,500 square feet.

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