Louisiana Administrative Code › Title 51 - PUBLIC HEALTH-SANITARY CODE › Part V - Disease Vector Control › Chapter 3 - Rodent Control › Section V-305 - Regulations for Rodent-Proofing of Existing Buildings [formerly paragraphs 5:031]

Current through Register Vol. 50, No. 6, June 20, 2024
A. No
				person shall reconstruct any building or structure, or repair or remodel any
				building or structure to the extent of 50 percent of the value of the
				structure, unless the same shall be made rodent-proof by the proper use of
				impervious material. Provided, that only such repairs or remodeling as affects
				or may affect the rodent-proof condition of the building or structure shall be
				considered subject to the provisions of this regulation.
B. [formerly paragraph 5:032] When
				rodent-borne diseases have been declared by the state health officer to be
				prevalent in a community, no alteration or repairs to existing structure to the
				extent of 50 percent of the value of the structure shall be undertaken without
				a permit from the state health officer.
C. [formerly paragraph 5:033] All foundation
				wall ventilator openings shall be covered for their entire height and width
				with perforated sheet metal plates of a thickness of not less than 14 gauge, or
				with expanded sheet metal of a thickness not less than 18 gauge, or with wire
				cloth of 19 gauge or heavier, or with cast iron grilles or gratings. The
				openings therein shall not exceed 1/2 inch (1.3 cm) in least
				dimension.
D. [formerly paragraph
				5:034] All foundation and exterior wall openings, except those used as doors or
				windows or for purposes of ventilation and light, such as openings due to
				deteriorated walls or broken masonry or concrete, shall be protected against
				the ingress of rodents by closing such openings with cement mortar, concrete,
				or masonry.
E. [formerly paragraph
				5:035] All exposed edges of the lower 10 inches of wooden doors, door sills,
				and jambs serving as rear or side entrances into business buildings, and other
				doors accessible to rodents, shall be protected against the gnawing of rodents
				by covering said doors, door sills, and jambs with solid sheet metal of not
				less than 24 gauge thickness. All doors on which metal flashing has been
				applied shall be properly hinged to ensure free swinging. When closed, doors
				shall fit snugly so that the maximum clearance between any door and the door
				jamb and sill shall not be greater than 3/8 inch (0.96 cm).
F. [formerly paragraph 5:036] All windows and
				other openings for the purpose of lighting or ventilating located in the side
				or rear of exterior walls and within 2 feet of the existing ground level
				immediately below such openings shall be covered for their entire height and
				width, including frame, with wire cloth of 19 gauge or heavier, having a mesh
				not larger than 1/2 inch (1.3 cm). All windows and exterior walls not covered
				in the above Paragraph, which are accessible to rodents by way of exposed
				pipes, wires, conduits and other appurtenances, shall be covered with wire
				cloth of 19 gauge or heavier, having a mesh not larger than 1/2 inch (1.3 cm);
				or, in lieu of wire cloth covering, said pipes, wires, conduits or other
				appurtenances shall be blocked from rodent usage by installing solid sheet
				metal guards of 24 gauge, or heavier. Said guards shall be fitted snugly around
				pipes, wires, conduits or other appurtenances. In addition, they shall be
				fastened securely to the exterior wall and shall extend a minimum distance of
				12 inches (30.7 cm) beyond and on either side of said pipe, wire, conduit, or
				appurtenance. This regulation shall not apply in the case of windows which
				cannot be opened and whose function is solely for the purpose of admitting
				light.
1. [formerly paragraph 5:037-1] Light
				wells with windows in exterior walls, which are located below the outside
				ground level, shall be protected from the ingress of rodents by the following
				methods.
a. [formerly paragraph 5:037-2] Cast
				iron or steel grilles or gratings, with openings not to exceed 1/2 inch (1.3
				cm) in least dimension shall be installed over light wells.
b. [formerly paragraph 5:037-3] Expanded
				metal of 18 gauge, or heavier, having openings not greater than 1/2 inch (1.3
				cm) in least dimension, 16 gauge, or heavier, wire cloth of 1/2 inch (1.3 cm)
				mesh shall be used to completely cover existing metal light well grilles where
				such existing grilles are broken or are otherwise defective or which have
				openings larger than 1/2 inch (1.3 cm) in least dimension and shall be securely
				attached to the existing grille.