Section 001-332-6 - ESTABLISHMENT CONSTRUCTION AND DESIGNA. All floors in rooms where exposed products are prepared or handled shall be constructed of or finished with materials impervious to moisture, so they can be readily and thoroughly cleaned. Floors that are subject to flood type cleaning in killing, eviscerating, cooling, boning, heat-treated and cooling rooms shall have at least 1/4-inch grade per foot for complete runoff with no standing water. Floors shall be kept clean and in good repair. B. All walls, posts, partitions, and doors in rooms where exposed products are prepared or handled shall be smooth and constructed of materials impervious to moisture to enable thorough cleaning. Walls shall be kept clean and in good repair. All joints, seams and duck boards are to be sealed to prevent insanitary conditions.C. Ceilings shall be smooth and constructed of materials impervious to moisture to enable thorough cleaning. All joints and seams are to be sealed to prevent insanitary conditions. Ceilings shall be kept clean and in good repair.D. Fixtures, ducts, pipes shall not be suspended over working areas in a manner whereby condensation or dripping may contaminate food, food contact surfaces and food packaging materials.01-001 C.M.R. ch. 332, § 6