411-41. Regulations Regarding Construction of Concrete Curbs, Gutters and Sidewalks.
(a) Sidewalk Construction. No sidewalks shall be constructed unless concrete curbs are first constructed. (Ord. 896, § 330, 12/21/1972)
(b) Engineering or Inspection Fee. An applicant for a permit to construct curb, gutter and/or sidewalk shall pay a fee of Fifty Dollars ($50.00) plus Twenty Cents ($.20) per linear foot of street frontage to the Department of Public Works.
The engineering or inspection fees required by the provisions of this chapter are for the purpose of defraying the costs of surveying and inspecting the concrete curb, gutter and/or sidewalk. No part of the fee may be refunded to any applicant except as hereinafter provided. (Ord. 896, § 331, 12/21/1972; Ord. 1279, § 2, 10/10/1978)
(c) Surveying. The Department of Public Works shall survey and set the required grade stakes. This work shall be completed within thirty (30) days from date of filing the application. If the County is unable to perform this service, the fee will be refunded to the permittee upon request. If the survey stakes are disturbed or destroyed and it becomes necessary to set additional stakes, the permittee shall reimburse the County at the rate of Twenty-five Cents ($0.25) per linear foot of street frontage. (Ord. 896, § 332, 12/21/1972)
(d) Notification of Work. The Department of Public Works shall be notified twenty-four (24) hours in advance of pouring concrete to permit inspection of subgrade and forms. (Ord. 896, § 333, 12/21/1972)
(e) Traffic and Safety. Where construction operations encroach upon the traveled way, adequate provisions will be required for proper traffic control and the convenience and safety of the public. (Ord. 896, § 334, 12/21/1972)
(f) Access to Adjacent Properties. The permittee shall provide access to all properties adjacent to the County road at all times. (Ord. 896, § 335, 12/21/1972)
(g) Damage to Right of Way Improvements. Existing road pavement, curbs, gutters and structures, suffering damage from construction operations under any permit issued, shall be restored to original condition by the permittee. All dirt and debris resulting from the permittee’s operations shall be removed from construction area. (Ord. 896, § 336, 12/21/1972)
(h) Subgrade Preparation and Forms. The subgrade shall be constructed to grade cross section as directed by the Director of Public Works. It shall be thoroughly watered and rolled or hand tamped, with all unsuitable material removed to a depth of not less than six inches (6") below subgrade. The existing pavement will be cut in a neat line longitudinally with the curb line. Additional subgrade requirements are as follows:
(1) Forms shall be smooth on the side placed next to the concrete and shall have a true smooth upper edge and shall be rigid enough to withstand the pressure of fresh concrete without distortion. All forms shall be thoroughly cleaned and coated with form oil to prevent the concrete from adhering to them. The depth of the form for the back of the curb shall be equal to the full depth of the curb. The depth of the face forms for concrete curbs shall be equal to the full face height of the curb. Forms shall be carefully set to alignment and grade and shall conform to the required dimensions. Forms shall be held rigidly in place by stakes; claims, spreaders and braces shall be used where required to insure rigidity in the forms. The forms on the front of the curb shall not be removed in less than one (1) hour nor more than six (6) hours after the concrete has been placed. In no event shall the forms be removed while the concrete is sufficiently plastic to slump.
(2) Expansion joints one-fourth inch (1/4") wide shall be constructed at all returns and at intervals of twenty feet (20'). Expansion joints shall be filled with pre-molded joint filler conforming to the specifications of ASTM Designation: D 1751. The expansion joint filler shall be shaped to fit the concrete that is being placed.
(3) Official sidewalk width will be those widths determined by the Department of Public Works, being a minimum of four inches (4") thick with a cross slope of one-fourth inch (1/4") per foot toward the curb grade. In residential driveways, the sidewalk shall be at least six inches (6") thick and in commercial driveways, eight inches (8") thick. (Ord. 896, § 337, 12/21/1972)
(i) Concrete Mix. Portland cement concrete shall be composed of Portland cement, fine aggregate, coarse aggregate and water, so proportioned and mixed as to produce a plastic, workable mixture.
Unless otherwise specified or required, the following is the cement requirement, strength requirement, and maximum size aggregate for Portland cement concrete curb, gutters and/or sidewalks:
|
Specified Minimum |
Minimum |
Maximum size |
|---|---|---|
|
5 Cu. Ft. |
3,000 lbs. per sq. inch |
1-1/2 inches |
(1) The cement per cubic yard of concrete is defined as the cubic feet of cement for each cubic yard of concrete in place. A cubic foot of cement shall be considered as weighing ninety-four (94) pounds and shall conform to the requirements of the standard specifications of Portland cement of the American Society for Testing Materials.
(2) The strength is defined as the average of compressive strength at twenty-eight (28) days, as determined by breaking of any three (3) consecutive standard six inch (6") diameter by twelve inch (12") height test specimens.
(3) The maximum size of aggregate indicates the maximum size of screen openings permitted in grading the aggregate.
(4) The screen used for test purposes shall be standard round opening screens for one-half inch (1/2") openings and larger, and screens with square openings for all sizes smaller than one-half inch (1/2").
(5) The water used in mixing the concrete shall be clean, free from oil, acid, alkali, or vegetable matter. No salt or sea water shall be used in the mixing of any concrete.
(6) No additives or coloring agents shall be added without permission in writing from the Director of Public Works. (Ord. 896, § 338, 12/21/1972)
(j) Concrete Finishing and Marking.
(1) After the concrete has been poured, it shall then be tamped with a heavy tamper followed by a light screen tamper. The surface shall then be troweled with a wooden float and then finished with a fine-hair push broom transfers to traffic. All concrete shall be adequately protected and cured with curing compound or equivalent methods.
(2) The surface of the sidewalks shall be scored into rectangles of not less than sixteen (16) or more than thirty (30) square feet. (Ord. 896, § 339, 12/21/1972)