[Ord. 575, 2-6-1978]
A. 
For the purpose of the curb and gutter specifications established pursuant to this chapter, there is hereby incorporated by reference and made a part hereof, Figures 1 and 2, attached to Ordinance 575, which are typical cross sections of curb and gutter and upon which size designations have been indicated.
B. 
Dimensions shown are preferred, although variations particularly to a minimum width of 18 inches may be permitted by written agreement by the contractor and the City Engineer and City Inspector. This in no way implies that inferior materials or design are permitted. In new additions, the type and dimensioned curb and gutter must be submitted to the City Engineer and Inspector before construction permits are issued. Where several contractors are involved, the approval of the City Engineer and Inspector of a certain design and dimensions must be followed throughout the addition. A structure built in an existing neighborhood would be allowed and required to conform with existing curbs and gutters.
[Ord. 575, 2-6-1978]
A. 
Basic guidelines are as follows:
1. 
Testing shall conform to the current manual of the American Society for Testing Materials, ASTM;
2. 
Specifications shall conform to the best practice and design of the current manual of the Oklahoma State Department of Transportation;
3. 
Specific test and specification numbers are not given since they tend to change with superseding issues and technology;
4. 
Curbs and gutters are to be formed from concrete, whereby Portland cement, fine aggregate, and water are combined to produce a dense, plastic material, which shall have a minimum 28 days' compressive strength of 3,500 psi (pounds per square inch), when sampled and tested using ASTM procedures. Presently this comprises taking two six inch by twelve-inch cylinder samples and subjecting them to compression tests, after curing for 28 days under laboratory conditions;
5. 
Slump of 1 1/2 inches to three inch range is common, however concrete curb and gutter formed by extrusion from machine molds approaches zero slump;
6. 
Air entrainment of 4% to 8%, depending on coarse aggregate size, is approved, and especially recommended on pours subjected to cold weather;
7. 
Suitable methods are to be used to vibrate the concrete to eliminate voids;
8. 
Good practice finishing methods are to be used, particularly using sufficient wetting to prevent premature drying. Liquid membrane can also be used to slow down the drying process;
9. 
The back of the curb and gutter is to be backfilled with earth and tamped;
10. 
Tie bars and dowels may be used to connect to paving, and to strengthen curb and gutter. In asphaltic paving, the practice of extending the bottom of the gutter base one inch longer than the top (see illustration below Figure 2) which allows the asphalt to deform against the gutter, giving better support, is permitted. Other methods such as sealants may be used;
11. 
Expansion joints are to be made as required by current good practice;
12. 
In general, the paving is to have parabolic crown, some three inches to four inches higher at the center line, with a gradual slope to meet and conform to the gutter height;
13. 
In driveways the curbing is to be sloped to driveway grade, using sufficient radius curve to ensure easy access to driveway; and
14. 
At street corners, it is required that as small a radius be used as possible, so that a direct arc measurement where curving of curb begins be from 20 feet to 25 feet in length. It is recognized that power curbing machines are limited to eight feet to 10 feet radius, depending on size.
[Ord. 575, 2-6-1978]
No territory annexed to the City after February 6, 1978, which has been platted into lots and blocks and has designated thereon the streets and alleys shall be annexed to the City unless curbing and guttering has been constructed upon the streets in the additions in accordance with the specifications set forth in Sections 14-301 and 14-302 of this chapter. However, in cases of extreme emergency the requirements of this of this Section may be waived by 3/4 vote approval of the Councilmen of the City.
[Ord. 575, 2-6-1978]
No permits for the construction of dwelling houses or other buildings upon the lands of any proposed additions shall be granted by the City Clerk of the City, after recommendation therefor by the Building Inspector, until guttering and curbing in such proposed additions shall have been installed therein in accordance with the terms and conditions of this chapter.