(a) When, under the conditions provided in this section, a building or structure is being erected, raised or partly or wholly demolished, or when its exterior is altered to an extent which causes a potential hazard to pedestrians to exist, a roof for the entire length of the project shall be provided over temporary and permanent sidewalks used by pedestrians. Such roof shall be kept substantial and in good repair from the time the construction or wrecking extends twenty feet above the grade until materials of or for the building or structure are no longer being used or handled on or near the street or alley front of the building or structure above the walk. Such roof shall be required under the following conditions:
(1) When the building or structure is over twenty feet, but less than thirty feet high, and is closer than five feet to a walk used by the public;
(2) When the building or structure is thirty feet, but less than forty feet high, and is closer than ten feet to a walk used by the public;
(3) When the building is forty or more feet high, and is closer than twenty feet to a walk used by the public; or
(4) In all cases, whether specifically required herein or not, when such roofs are required by the Director of Public Service or by the Superintendent of Building and Zoning Inspection for proper protection for pedestrians.
(b) Roofs shall be constructed of not less than one layer of two-inch plank, or other material of equal strength and durability, over which shall be laid waterproof paper or roofing felt to make the roof waterproof. Over the waterproofing shall be laid a deck adequate to protect the waterproofing and to give the roof sufficient strength to sustain all reasonable loads and shocks consistent with the type of construction and the height of the building or structure being erected, raised, demolished, altered or repaired.
(c) Such roofs shall be at lest eight feet in the clear above the walk and shall be supported by a well braced framework of sufficient strength and stability to sustain safely the weight of all loads that may be placed thereon and to withstand the shocks incident to such loads and to accidental jars from trucks passing or delivering material.
(d) Outside of congested districts where, in the opinion of the Superintendent, a covered walk is not necessary, a permit may be issued by the Director of Public Service to block off part of the sidewalk or street and have a temporary walk constructed as provided for in Section 1452.04.
(e) Covered walks shall be not less than forty-four inches wide in the clear, but the Director of Public Service may require a covered walk to be as wide as he or she deems necessary to properly accommodate the traffic passing over it.
(f) A solid railing or foot board at least thirty inches high shall be constructed around the entire outer edge of the temporary roof, and the side of the walk adjacent to the property line, between the walk and the roof, shall be boarded up solidly.
(g) Covered walks shall be continuously well lighted between sunset and sunrise.
(h) In the construction of covered walks, all necessary surface drainage shall be provided for when placing the sills and other parts of the structure.
(Ord. 42-1981. Passed 2-23-81.)