§94.09 Sidewalk Vents and Light or Window Wells — San Diego Zoning Code

Unless closed by a metal grill having no openings greater than one–half (1/2) inch in any diameter, all sidewalk vents and light wells of business buildings shall be rat– proofed by one or more of the following methods:

(a) by covering the opening in the side wall or foundation of the building with 19–gauge or heavier wire cloth having a mesh not greater than one–half (1/2)

Ch. Art. Div. 9 4 0 5

San Diego Municipal Code

Chapter 9: Building, Housing and Sign Regulations

(6-2000)

inch in any diameter, which shall be securely fastened in place with cement mortar or a tight–fitting frame. If it is deemed necessary to gain entrance to the well for any purpose the frame shall be installed so that it can be easily removed or swung open on hinges.

(b) By partially closing the opening in the foundation or wall with masonry or similar material and treating the remaining opening as in (a) above.
(c) In lieu of the above described procedures for the rat– stoppage of light wells and sidewalk vents a rat–proof wire basket may be installed upon written approval of the Director of Public Health.
(d) If he shall deem it necessary, the Health Officer may require that the bottom and sides of light wells shall be rat–proofed with concrete or masonry, making at least one hole per square foot in the bottom for drainage, not greater than one–half (1/2) inch in diameter. If deemed necessary, the openings of sidewalk vents or light wells may be entirely closed with cement mortar or other material impervious to rats.
(“Sidewalk Vents and Light or Window Wells” incorp. 1–22–1952 by O–5046 N.S.)