(A) Breaking through pavement.
(1) Heavy duty pavement breakers may be prohibited by the Superintendent of Public Works when the use endangers existing substructures or other property.
(2) Saw cutting of Portland cement concrete may be required when the nature of the work or the condition of the street warrants. When required, the depth of the cut shall be not less than 1 inch in depth; however, depths greater than 1 inch may be required by the Superintendent of Public Works when circumstances warrant. Saw cutting may be required by the Superintendent of Public Works outside of the limits of the excavation over cave-outs, overbreaks, and small floating sections.
(3) Approved cutting of bituminous pavement surface ahead of excavations may be required by the Superintendent of Public Works to confine pavement damage to the limits of the trench.
(4) Sections of sidewalks shall be removed to the nearest score line or joint.
(5) Unstable pavement shall be removed over cave-outs and overbreaks and the subgrade shall be treated as the main trench.
(6) Pavement edges shall be trimmed to a vertical face and neatly aligned with the center line of the trench.
(7) Cutouts outside of the trench lines must be normal or parallel to the trench line.
(8) Boring or other methods to prevent cutting of new pavement may be required by the Superintendent of Public Works.
(9) The permittee shall not be required to repair pavement damage existing prior to excavation unless his or her cut results in small floating sections that may be unstable, in which case permittee shall remove and pave the area.
(B) Substructure installation. No person shall, without written permission of the Superintendent of Public Works, install any substructure, except manholes, vaults, valve casings, culverts, and catch basins at a vertical distance less than:
(1) Streets. Twenty-four inches below the established flow line of the nearest gutter. If the flow line is not established, then the depth shall be at a minimum of 24 inches below the surface of the nearest outermost edge of the traveled portion of the street;
(2) Parkways.
(a) The minimum depth of any substructure shall be 16 inches below established gutter grade when the substructure parallels the parkway; and
(b) The minimum depth of any substructure shall be 12 inches below the top of the established sidewalk or curb when the substructure is at right angles to the parkway.
(3) Other public places. The minimum depth of any substructure in any other public place shall be 12 inches below the surface.
(C) Future grade changes. Nothing in this section shall impose a duty upon the permittee to maintain the specifications as required herein upon subsequent changes of grade in the surface unless the grade in the substructure interferes with the maintenance of, or travel on, a public street.
(1969 Code, § 22-83) (Ord. 1985-30, passed 1-27-1986) Penalty, see § 96.999