§ 7.03.02. Street design standards.

Subsections 7.03.02.B through 7.03.01.N of this Code may be replaced, in whole or in part, by a technical standards manual. Upon completion of a technical standards manual, said manual may be incorporated into this Code by resolution of the board of county commissioners. Until that time, the technical standards below shall govern. Standards not incorporated into the technical standards manual shall be as below.

A.

Pavement widths are measured from front to front of curb, or edge to edge of travelway if there is no curb. These minimums standards do not include widths for on-street parking.

1.

Arterial streets—24 feet (off-set centerline).

2.

Commercial or industrial streets—24 feet.

3.

Collector streets—24 feet.

4.

Minor or residential streets—20 feet.

5.

One-way collector, minor or residential streets—12 feet.

6.

Cul-de-sac pavement shall connect the outside diameter of the cul-de-sac with a straight line 20 feet back from the edge of the approaching road. Pavement shall be 80-foot diameter in each cul-de-sac with eight feet of swale.

7.

Alleys, commercial; industrial or public service—20 feet.

8.

Alleys, residential—16 feet.

9.

Private roads shall meet county road specifications as set forth in this Code. Any private roads in new subdivisions approved under this Code shall meet all standards and specifications set forth in this Code.

B.

Bases for arterial, collector, commercial or industrial streets shall be minimum of ten inches of compacted shell or lime rock and compacted to 98 percent maximum density as per AASTO T-180. All other bases eight inches approved compacted shell or lime rock as compacted above.

C.

Paved surfaces for minor streets, residential streets and alleys as mentioned in this section shall be a minimum one and one-half-inch thick FDOT Type S-III asphaltic concrete. Paved surfaces for arterial, commercial or collector streets as mentioned in this section shall be a minimum two inches thick FDOT Type SP-12.5 asphaltic concrete. The county engineer may approve alternative surfaces that meet FDOT specifications or that are otherwise demonstrated to be equivalent.

D.

Pavement crown shall be one-quarter-inch per foot with no inverted crowns permitted. Finish pavement shall be one-quarter-inch higher than the lip of any concrete gutter.

E.

Ground slope from back of curb to right-of-way shall be five percent minimum.

F.

Lots, one and one-fourth acres or less exclusive of road rights-of-way shall slope toward streets or other adequate outfalls. Drainage systems shall be installed at rear and side yards of residential lots where proposed slopes do not equal or exceed 0.2 percent toward the right-of-way.

G.

All lots requiring fill shall have fill of good clean acceptable material. No muck, or other such materials shall be used for fill except in the top six inches for green areas only.

H.

Sidewalks, where required, shall be a minimum of five feet wide and shall be six inches thick, Class 1 3000 PSI concrete. Unless otherwise approved by the county engineer, sidewalks shall be uninterrupted by poles, utility boxes and the like. Sidewalk grades and slope shall conform to design standards. There shall be a minimum four-foot separation between a sidewalk and an uncurbed travel lane. The minimum four-foot separation area shall be sodded unless an alternate ground cover is approved by the county engineer. Sidewalk construction shall be completed prior to request for final inspection and release of security. If no security is posted, sidewalks shall be completed as a prerequisite for final plat approval.

I.

Subgrades for arterial streets shall be stabilized 12 inches compacted thickness, extend 12 inches beyond base, and the material shall have 75 pounds per square inch Florida Bearing Value and LBR of 40. Base for all streets shall be constructed six inches beyond edge of pavement. All other streets shall be stabilized 12 inches beyond the base and material shall have 50 pounds per square inch Florida Bearing Value.

J.

Subbases for sidewalks shall be compacted to 100 percent of maximum density as per AASHTO—T99.

K.

Arterial streets shall be designed to meet FDOT requirements.

L.

Traffic control signs within subdivision shall be designed and installed to meet all the requirements of the FDOT Manual on Uniform Traffic Control Devices.

M.

Stabilization shall extend six inches beyond back of curb where applicable.

N.

Street name signs shall be placed at each street intersection on metal posts erected in concrete (or any other approved method) by the subdivider. Top of sign shall be seven feet above centerline grade of road. Signs shall be located midway between edge of pavement and sidewalk. All street signs shall be uniform and conform to following specifications: Green reflectorized background, backed on six inches wide aluminum blanks. Name letters shall be four inches silver reflectorized letters, abbreviations are permissible. "Dead End" signs shall be required for all culs-de-sac exceeding 400 feet in length.

(Ord. No. 94-8, § 1 (7.03.02), 10-5-94; Ord. No. 2008-02, § 2(Exh. B), 5-22-08)