(1) The floors, walls, ceilings, partitions, posts, doors, and other parts of all compartments must be of material, construction, and finish which will allow ready and thorough cleaning.

(2) All floors, except those in receiving rooms and feeding rooms, and floors which are kept dry, must be constructed of hardened concrete, tile laid closely together with impervious joint material, or of other similar impervious material, and be kept in good repair. The floors in killing, icecooling, icepacking, and evisceration rooms must be graded to permit runoff with no standing water.

(3) Ceilings and walls in rooms and compartments where exposed edible products are processed, handled, or stored must have tiled, enameled, or other smooth surfaces impervious to moisture. Cooler and freezer rooms must have interior surfaces impervious to moisture so as to permit thorough cleaning.