Section 2-1-4-07-02-202.03 - Floors, walls, ceilings, etc.:1. The floors, walls, ceilings, partitions, posts, doors, and other interior structures shall be of such materials, construction, and finish which is impervious to moisture, so that they can be readily and thoroughly cleaned.2. Floors: a. All floors in rooms where exposed products are processed, prepared, or handled shall be constructed of smooth concrete or of tile, or by other similar impervious material and kept in good repair.b. All floors throughout the building which are not kept dry shall be graded to permit run-off with no standing water. In new construction and renovated plants, the recommended pitch is one-fourth inch per foot to drains.3. Ceilings and Walls: a. Ceilings must be moisture resistant in rooms where exposed products and utensils are prepared, handled, processed, or stored. They shall also be smooth and tightly sealed to prevent dust or dirt from sifting through and shall be acceptably finished and free of any flaking or peeling paint. If the underside of the roof with or without exposed overhead structures is used as a ceiling, it shall conform to the same sanitary requirements.b. All walls, posts, doors, and partitions in rooms where edible products are processed, handled, or stored shall have smooth surface impervious to moisture to enable thorough cleaning. In all new construction, the window ledges shall be set at an angle of approximately 45 degrees and all upper horizontal surfaces shall be kept to a minimum.2 Miss. Code. R. 1-4-07-02-202.03