The contractor shall raise or lower existing manhole tops to coincide with the finished grade elevation of the paving.
TABLE 4
CONVERSION FACTORS APPLICABLE TO BASES
Base Material | Conversion Ratio
|
Asphalt concrete | 1.0 |
Asphalt treated base, gradations III or IV | 1.3 |
Granular base | 2.0 |
Granular subbase | 3.0 |
NOTE TO TABLE: The conversion factor shown is a conversion ratio, for each material, multiplied by the required design thickness of asphalt concrete to provide thickness of other bases that will give the same degree of performance. | |
TABLE 5
COMPOSITION LIMITS FOR ASPHALT MIXTURES
PERCENT PASSING BY WEIGHT
Sieve Size | Asphalt Concrete | Asphalt-Treated Base | ||||
Base I | Base II | Surface I | Surface II | Base III | Base IV | |
Sieve Size | Asphalt Concrete | Asphalt-Treated Base | ||||
Base I | Base II | Surface I | Surface II | Base III | Base IV | |
1-1/2 inch | 100 | -- | -- | -- | 100 | -- |
1 inch | 85-100 | 100 | -- | -- | -- | -- |
3/4 inch | -- | 80-100 | -- | -- | 70-100 | 100 |
1/2 inch | 50-80 | -- | 100 | 100 | -- | -- |
3/8 inch | -- | 54-76 | 80-100 | -- | 40-80 | 70-100 |
No. 4 | 30-50 | 37-57 | 55-75 | 75-95 | -- | -- |
No. 8 | 25-45 | 25-45 | 35-60 | 60-85 | 25-60 | 40-100 |
No. 16 | 15-35 | 15-35 | 25-50 | 45-70 | -- | -- |
No. 50 | 5-20 | 5-20 | 9-21 | 15-40 | 5-30 | 15-50 |
No. 100 | 3-10 | 3-10 | 5-14 | 5-25 | 3-15 | 4-25 |
No. 200 | -- | -- | 3-7 | 4-10 | -- | -- |
% asphalt | 3.5-6.0 | 4.0-7.0 | 5.0-8.0 | 6.0-9.0 | 3.5-6.0 | 4.0-8.0 |
TABLE 6: THICKNESS REQUIREMENTS
FOR ASPHALT PAVED STREETS
Street Classification | Pavement Design | ||||
Total Minimum Thickness (Method I) | Total Minimum Thickness (Method 2) | ||||
Surface Type I or II (inch) | Base Type I or II (inch) | Minimum Surface Type I or II (inch) | Minimum Base Type I or II (inch) | Minimum Granular Subbase (inch) | |
Local | 1-1/2 | 6-1/2 | 1-1/2 | 2-1/2 | 9 |
Subcollector | 1-1/2 | 7-1/2 | 1-1/2 | 3-1/2 | 10 |
Collector | 1-1/2 | 8-1/2 | 1-1/2 | 5 | 8 |
NOTES TO TABLE: (1) Methods 1 and 2 will produce approximately the same pavement quality and strength. (2) Selection of the method shall be at contractor’s option. (3) Following destinations pertinent to surface and base type used in this table correspond to the State Department of Highways standard specifications: Surface Type I = Class I, Type A (state highway designation) Surface Type II = Class I, Type L (state highway designation) Base Type I = Class I, Base (state highway designation) Base Type II = Class I, Binder (state highway designation) Granular base and granular subbase of Method 2 shall conform to composition limits specified in App. B, § 4(B)(4) and (5) (4) Where streets are to serve industrial or commercial areas, the pavement design shall be based on a study prepared by the subdivider’s engineer projecting the type of vehicles using the street and traffic volumes approved by the Planning Commission’s duly authorized representative. (5) Arterial streets shall be based on requirements of the state’s Department of Transportation. | |||||
(1984 Code, Ch. 157, App. B, § 6) (Ord. O-86-78, passed 8-17-1978)