§ 5.7. Base preparation and paving application.

5.7.1 Streets within a residential subdivision (S1, S2 and S3).

1)

Asphalt streets. The following materials shall be used:

(a)

Crushed stone base. The base course shall consist of at least six to eight inches of graded aggregate base, which shall be thoroughly compacted and brought to proper section. For sections less than four feet wide, eight inches of Class "A" concrete base (five inches on local and minor collector streets) and 1½ inches of "E" or "F" topping shall be required.

(b)

Ninety-eight percent base compaction required on all graded aggregate base.

(c)

Upon inspection and approval by the DOT inspector, the base shall be primed with 0.25 gallon of R.C. 70 per square yard and cured for three days prior to paving.

(d)

Upon final approval of base course, two inches of "B" modified binder shall be applied.

(e)

The final one inch of type "F" top course shall be applied after 75 percent of the houses on the street have been built.

(f)

Prior to application of top course, base course shall be inspected and repaired.

(g)

Prior to applying the top course, a tack coat shall be applied to the binder course at a rate of 0.05 gallons per square yard. The department shall approve type of tack prior to placement.

(h)

All asphalt shall be compacted to 95 percent Standard Proctor.

(i)

Core samples will be taken on any road built without proper inspection to verify thickness and compaction of base and asphalt courses. If any core is deficient in thickness, by more than one-half inch, additional cores shall be taken to determine the area of deficient thickness and the developer will be required to correct the defect as per specifications.

(j)

All asphalt job-mix formulas and application methods, including equipment operations, shall conform to the most recent version of the Georgia DOT Construction of Roads and Bridge Manual.

5.7.2 Nonresidential developments.

1)

These standards shall apply to new local and minor collector streets in nonresidential subdivision and other nonresidential projects.

2)

Asphalt streets. The following materials will be used:

(a)

Crushed stone base. The base course shall consist of at least eight inches - ten inches of graded aggregate base, which shall be thoroughly compacted and brought to proper section

(b)

Ninety-eight percent base compaction required on all graded aggregate base.

(c)

Upon inspection and approval by the DOT inspector, the base shall be primed with 0.25 gallon of R.C. 70 per square yard and cured for three days prior to paving.

(d)

Upon final approval of base course two 2 - 5 inches of "B" binder shall be applied.

(e)

The final one and one-half inch of type "E" top course shall be applied after 75 percent of the buildings on the street have been built.

(f)

Prior to application of top course, base course shall be inspected for damage and all repairs made.

(g)

Prior to applying the top course, a tack coat shall be applied to the binder course at a rate of 0.05 gallons per square yard. The department shall approve type of tack prior to placement.

(h)

All asphalt shall be compacted to 95 percent Standard Proctor.

(i)

Core samples will be taken on any road built without proper inspection to verify thickness and compaction of base and asphalt courses. If any core is deficient in thickness, by more than one-half inch, additional cores shall be taken to determine the area of deficient thickness and the developer will be required to correct the defect as per specifications.

(j)

All asphalt job-mix formulas and application methods, including equipment operations, shall conform to the most recent version of the Georgia DOT Construction of Roads and Bridge Manual.