(a) Materials. The paving and/or repaving, curbing and/or recurbing, guttering and/or reguttering, shall be constructed of such cement-concrete material, or of such other material, as shall meet with the approval of the Township Board.
(b) Stone Curbs. This type of curbing shall consist of granite or other approved stone. It shall be not less than five inches in width at the top, not less than twenty-two inches in depth, and not more than eight feet, nor less than four feet, in length. The bottom of the stone curb preferably should be two inches wider than the top. The top surface shall be tool-dressed and with a quarter-inch bevel. The ends of the curb shall be cut square for the full depth and width of the stone. The front face of the curb shall be tool-dressed to a point not less than eight inches below the top, and the back face shall be tool-dressed to not less than three inches below the top. All curved curbing where the radius exceeds five feet shall be cut and dressed as specified for straight stone curbing, except that the width at the top shall be six inches, the width at the bottom eight inches, and the back face vertical and the front face on a batter. All stone curb radii under five feet shall be cut as a corner stone where the top and front faces only shall be tool-dressed as specified for straight curbing. All joints on stone curbing shall be true and straight and not exceeding one-quarter inch in width for a distance of twelve inches below the top, and may be wider from this point to the bottom. All joints shall be filled and pointed with a stiff mortar composed of one part of Portland cement and two parts of approved sand. When indicated or directed, drainage openings shall be made through the stone curbing at the elevation and of the size required. Any curbing required crossing the entrance to an alley, driveway or private entranceway shall have the top finished two inches above the outside edge or gutter line of the finished roadway pavement.
(c) Cement-Concrete Curbs. These shall be of monolithic construction with a width of six inches at the top and eight inches at the bottom, and with a depth of twenty inches, and with no section exceeding ten feet in length. The back face shall be vertical. Any curbing required crossing the entrance to an alley, driveway or private entranceway shall have the top finished two inches above the outside edge of the gutter line of the finished roadway pavement. When indicated or directed, drainage openings shall be made through the cement-concrete curb at the elevation and of the size required. The proportion of Portland cement, clean sharp sand and three-quarter inch pebbles or stone used in the curbing shall be 1:2:4, volumetric measuring. When the temperature of the air falls below forty degrees Fahrenheit, calcium chloride must be added to the mix to insure quick set-up. Its use shall be a proportion not exceeding four percent of the cement used. All curb corners shall be circular and have a radius equal to the least width of the sidewalk area of the intersecting streets.
(d) Excavation for Curb Subgrade. Excavation for curb subgrade shall be at a point not less than twenty inches from the top of the finished curb, unless otherwise specified by the Township Engineer, in which case it may be required that this excavation be increased a further depth of four inches and refilled with a tamped layer of stone, gravel or cinders, due to unsuitable conditions. Backfilling around all curbing construction shall be hand-tamped and grass plots and other adjacent areas shall be brought to a level not lower than the top of the curbs.
(e) Curb Forms. These shall be of such material and type as will meet with the approval of the Township Engineer.
(f) Mixing of Cement-Concrete for Curbs. The cement-concrete may be mixed upon the site in such manner and by such method as shall meet with the approval of the Township Engineer, or may be delivered on the job from a central mixing plant, if the Engineer so approves.
(g) Excavations for Sidewalks. The subgrade shall be excavated to a depth of four inches below and parallel with the top of the finished pavement and well compacted. If, after excavation, the subgrade is found to be of unsuitable material, then the Township Engineer may, at his of her discretion, require additional excavation to a depth of not less than four inches, and its replacement with cinders well compacted.
(h) Cement-Concrete for Sidewalks. The ingredients for cement-concrete for sidewalks shall be of the same proportions as provided for curbs. The concrete may be job mixed or supplied from a central mixing plant, and each block of sidewalk shall be jointed not less than every four feet, with every fourth joint opened to the subgrade and sandfilled upon withdrawal of the forms and templets. At street corners the sidewalk tangent shall be extended each way across grass plots to the curved curb. All sidewalks shall have a slope of one-quarter inch per foot toward the curb. All sidewalks shall be of monolithic construction.
(i) Driveways. All private driveways constructed across the sidewalk area shall have the finished grade meet the finished grade of the sidewalk with the ramp or approach beginning two inches above the gutter line of the roadway pavement and terminating at the edge of the sidewalk closest to the curb. Curb returns are not required for this type of driveway approach.
(j) Gutters. Cement-concrete gutters shall be six inches in depth, twenty inches in width and jointed where possible every ten feet. These shall be constructed separately from the curbs, and the curb surface contacting the gutter depth shall have a coat of asphalt paint prior to placement of cement-concrete in the gutter. The proportions of cement-concrete shall be one part of Portland cement, two parts of clean sharp sand and three and one-half parts of clean three-quarter inch commercial stone or pebbles.
(Ord. 186. Passed 5-24-35.)