1.1 
Description of Work.
A. 
Perform all work necessary and required for the construction of temporary pavement and replacement of temporary pavement. Such work includes but is not limited to the following:
1. 
Gravel base course.
2. 
Asphalt-aggregate, central-plant, hot-mix, bituminous pavement.
3. 
Tack coat.
4. 
Saw cutting and patching existing road.
B. 
Bituminous paving shall conform to the requirements of the New Shoreham Department of Public Works.
C. 
The Contractor is responsible for the roadway restoration on Town roadway for a one-year period from the day of acceptance by the Town of New Shoreham.
1.2 
Environmental Conditions.
A. 
Bituminous paving shall not be placed when the ambient temperature is below 40° F., when there is frost in the base, or any other time when weather conditions are unsuitable for the type of materials being placed.
1.3 
Protection.
A. 
After final rolling, no vehicular traffic of any kind shall be permitted on paving until it has cooled and hardened, and in no case less than six hours.
B. 
Any damaged pavement resulting from work under this contract shall be repaired by the contractor.
2.1 
Materials.
A. 
Gravel Base. Gravel shall be free of foreign material such as loam, silt, clay and vegetable matter and meet the following requirements:
Passing 1 1/4-inch sieve
100%
Passing 1/4-inch sieve
30% - 65%
Passing No. 40
5% - 50%
Passing No. 100
0% - 10%
B. 
Backfill. Backfill shall be excavated material free-draining clean granular soil suitable for backfill. Up to 20% of backfill material may be rock-like materials not to exceed 0.05 cubic feet in volume, not more than six-inches in length. The backfill shall not contain any debris, pavement, frozen material, organic matter or peat.
2.2 
Bituminous Pavement Materials.
A. 
Asphalt. The asphalt material shall conform to the requirements of the applicable table in "Specifications for Asphalt Cements and Liquid Asphalts", Specification Series No. 2, The Asphalt Institute. Paving asphalt shall be steam-refined paving asphalt with penetration grades of 85-100 for roads and 60-70 for parking areas. The amount of asphalt to be mixed with the mineral aggregate shall be between 3% - 6% by weight for binder course and between 6.5-8% by weight for wearing course. The exact amount of asphalt to be mixed with the mineral aggregate shall be such that a hard, unyielding paving will be the result.
B. 
Mineral Aggregate. Coarse and fine mineral aggregate shall consist of broken stone, crushed gravel, natural materials having sufficient roughness when combined within the specified limits for grading, or a mixture thereof. If gravel is used, not less than 15% nor more than 30% limestone screenings by weight shall be added to the gravel as a separate ingredient so as to meet the gradation limits. If crushed stone is used, not less than 15% nor more than 30% sand by weight shall be added to the crushed stone as a separate ingredient to meet the gradation limits. The material shall be tough, durable, and sound, and shall be free from organic matter and other deleterious substances, and shall conform to the following gradation:
a. 
Wearing Course.
Passing 3/4-inch
100%
Passing 1/2-inch
80% - 100%
Passing 3/8-inch
70% - 90%
Passing No. 4 sieve
50% - 70%
Passing No. 8 sieve
35% - 50%
Passing No. 30 sieve
18% - 29%
Passing No. 50 sieve
13% - 23%
Passing No. 100 sieve
8% - 16%
Passing No. 200 sieve
3% - 8%
b. 
Binder Course.
Passing 1 1/4-inch
100%
Passing 3/4-inch
60% - 80%
Passing 3/8-inch
35% - 60%
Passing No. 8 sieve
20% - 35%
Passing No. 50 sieve
3% - 12%
Passing No. 200 sieve
0% - 4%
2.3 
Mixing.
A. 
Surface course shall be mixed at a central mixing plant by either batch mixing or continuous mixing, at a temperature not exceeding 325° F. The completed mixture, tested at any time or at any location, shall have a uniform distribution of asphalt binder, as determined by the extraction test, as performed in accordance with ASTM test method D2172.82. The bitumen ratio (pounds of asphalt per 100 pounds of dry aggregate), computed from laboratory extraction analysis, shall not vary more than 5% above or 10% below the exact amount predetermined to obtain hard unyielding paving.
2.4 
Tack coat.
A. 
A tack coat of asphalt emulsion SS-1 (diluted to 50%) not to exceed 0.10 gallons per square yard, shall be sprayed by a distribution truck capable of spraying the emulsion uniformly over the underlying course.
3.1 
Weather Limitations.
A. 
Bituminous Concrete pavement shall not be placed on a wet or damp surface or when the temperature of the surface is less than 40° F., measured prior to placement. Air temperature shall be 40° F. and rising.
3.2 
Remove and Dispose of Existing Pavement.
A. 
Existing bituminous pavement shall be removed and disposed of properly. All edges shall be sawcut to a straight smooth line.
3.3 
Pavement.
A. 
As soon as the backfill has been compacted to 95% density, the two inches temporary pavement shall be placed. The temporary pavement shall remain for a period no less than 90 days at which time the contractor shall remove the temporary pavement and re-sawcut the trench 12-inches beyond the temporary pavement edges and install the permanent pavement. The contractor will be responsible for the temporary pavement during the ninety-day period.
3.4 
Gravel Base Course.
A. 
Gravel base shall be of thickness indicated on detail.
3.5 
Surface Preparation.
A. 
Immediately before applying binder course, the area to be surfaced shall be cleaned of all loose material. Binder course shall not be applied until base course preparation has been completed, and only so far in advance of placing the surfacing as may be permitted by the New Shoreham Department of Public Works.
3.6 
Bituminous Pavement.
A. 
Surface Preparation. In advance of placing asphalt concrete and before placing adjacent to cold transverse construction joints, such joints shall be trimmed to a vertical face and to a neat line and tack coat shall be applied to all edges.
B. 
Spreading. The spreading and finishing equipment shall be of the self-powered type and shall have a floating screen assembly controlled as to elevation strike off. The use of any spreading and finishing equipment which causes blemishes or conditions of non-uniformity which are not satisfactorily corrected by the scheduled operations shall be discontinued and other satisfactory spreading and finishing equipment shall be provided by the contractor.
C. 
Compacting Surface Course.
1. 
While hot and as soon as it will bear the roller without displacement of hair cracking, the surface course shall be uniformly compressed by a power driven tandem roller, mechanically wetted, weighing not less than 350 pounds per linear inch width of tread and the roller shall weigh not less than 10 tons. Rolling shall start longitudinally at the sides and process toward the center of the pavement, overlapping on successive trips by at least one-half of the width of the rear wheels of the roller. Rolling shall continue until all roller marks are eliminated, the surface is of uniform texture and true to grade and cross-section, and a density of at least 96% of the laboratory density specified in ASTM D-1559 is obtained.
2. 
The roller shall be operated by a competent, experienced roller operator and shall be kept in as nearly continuous operation as practical while the work is underway.
D. 
Special Instructions. In addition to the requirements of this specification, roadway paving shall conform to all state and local regulations and specifications.
E. 
State Roads. On state roads, the contractor shall obtain the required Utility Permit from RIDOT and the work shall be in accordance with the Permit.