Section 58(4) in Kerala Municipality Building Rules, 1999
(4)Every building or part thereof, designed or intended for the handling of storage of food stuffs shall conform to the requirements specified below:(a)every building unless supported on pillars shall have continuous foundation walls extending from at least 60 cms. below ground level to at least 15 cms. above ground level or shall have a continuous floor of masonry or reinforced concrete or other quality rat-proof-material.(b)all openings in foundations or floors, windows and drains and all junctions between foundations and walls of the building shall be effectively rat-proofed; windows and doors shall be securely covered with rat-proof screening or grillage or shall be tightly closed with metal sheeting, concrete or other equally rat-proof-material.
