(1) Floors and floor coverings of all food preparation, food storage, and utensil washing areas, and the floors of all walk-in refrigerating units, dressing rooms, locker rooms, toilet rooms and vestibules must be constructed of smooth, durable material such as sealed concrete, terrazzo, ceramic tile, durable grades of linoleum or plastic, or tight wood impregnated with plastic, and shall be maintained in good repair. Anti-slip floor covering in areas necessary for safety reasons may be used.

(2) Carpeting, if used as a floor covering, must be of closely woven construction, properly installed, easily cleanable, and maintained in good repair. Carpeting is prohibited in food preparation, equipment washing and utensil washing areas where it would be exposed to large amounts of grease and water, in food storage areas, and toilet room areas where urinals or toilet fixtures are located.

(3) The use of sawdust, wood shavings, peanut hulls, or similar material as a floor covering is prohibited.

(4) Properly installed, trapped floor drains must be provided in floors that are water-flushed for cleaning or that receive discharges of water or other fluid waste from equipment, or in areas where pressure spray methods for cleaning equipment are used. Such floors must be constructed only of sealed concrete, terrazzo, ceramic tile or similar materials, and must be graded to drain.

(5) Mats and duckboards must be of nonabsorbent, grease resistant materials and of such size, design, and construction as to facilitate their being easily cleaned. Duckboards may not be used as storage racks.

(6) In all new or extensively remodeled establishments utilizing concrete, terrazzo, ceramic tile or similar flooring materials, and where water-flush cleaning methods are used, the junctures between walls and floors must be covered and sealed. In all other cases, the juncture between walls and floors may not present an open seam of more than 1/32 inch.

(7) Exposed utility service lines and pipes must be installed in a way that does not obstruct or prevent cleaning of the floor. In all new or extensively remodeled establishments, installation of exposed horizontal utility lines and pipes on the floor is prohibited.