31-19 CURBS AND GUTTERS.

• a. Conditions Requiring Curbs . Curbs shall be required under any of the following conditions:

1. The subdivision is within an R-20 district or a district having a smaller lot size;

2. The grade of the street is less than one (1%) percent or more than six (6%) percent;

3. The street frontage between adjacent sections of curb is less than five hundred (500') feet;

4. The subdivision is for commercial or industrial purposes.

• b. Block Requirements . If curbs are required in any portion of a block within the subdivision, the entire frontage along that block shall be curbed.

• c. Minimum Grade . The minimum grade for curbs and gutters shall be one (1%) percent except a reduction may be authorized by the Engineering Department.

d. Designation on Improvement Plans . Improvement plans shall show curb profiles, including profiles for all curb returns and cul-de-sacs.

• e. Minimum Elevations . Minimum top of curb elevations shall conform to Section 31-28.

a. Cul-de-sac . A paved turnaround shall be provided at the ends of cul-de-sac streets. The radius for the edge of pavement or curbline, shall be thirty-five (35') feet.

• b. Radii for Curb Returns . Curblines at street intersections and turnarounds shall be constructed on a curve having a radius equal to that shown below:

Standard Radius for Curb Returns

1. All residential street intersections, twenty (20') feet;

2. Cul-de-sac turnaround, thirty-five (35') feet;

3. Industrial street intersections, thirty (30') feet.

c. Private Road Turnaround . A paved turnaround area shall be provided at the end of any private road serving more than two (2) lots. The radius for the edge of the pavement shall be thirty-five (35') feet. Alternate turnaround provisions may be approved if adequate paved area is provided to accommodate normal residential traffic.

a. Encroachment Permit Required . An encroachment permit shall be obtained from the Engineering Department before construction of any driveway.