An automatic sprinkler system shall be provided throughout buildings containing Group M occupancy where one of the following conditions exists: (1) A fire area exceeds 12,000 square feet. (2) A fire area is located more than three stories above grade plane. (3) The combined area of all Group M fire areas on all floors exceeds 24,000 square feet. This applies to retail stores, department stores, drug stores, markets, motor fuel-dispensing facilities, sales rooms, and similar uses.