(A) Sidewalks may be constructed or reconstructed of either cement concrete or of bituminous concrete in accordance with the specifications pertaining thereto.
(B) But, upon election by the owner of his choice of material for the sidewalk, the entire sidewalk fronting his property shall be of one continuous type of material. No patching will be permitted of the other type of material.
(C) Unless otherwise required all sidewalks shall be a minimum of 4 feet 6 inches wide on the surface.
(D) All sidewalks shall, unless otherwise impracticable, have a slope of a minimum 1/4 of an inch per foot of width, pitching to the street.
(E) At driveways, sidewalk materials, design and construction shall conform to specifications for driveway aprons.
('66 Code, § 59-10)