Bituminous concrete surface course shall include the construction of cold mixed bituminous pavements on previously constructed base courses at the prescribed locations, to the prescribed lines, grades, and dimensions, and in accordance with the plans and specifications.
The bituminous concrete shall be cold mixed top course Type A or T, which shall have the composition required by the 1941 Standard Specifications of the New Jersey State Highway Department, as amended, and shall be prepared and mixed in accordance with the requirements of said specifications.
A. 
Trucks used for transportation shall be in proper operating condition and shall have leakproof bodies and ample size canvas covers. When the atmospheric temperature is below 60° F., trucks with insulated bodies shall be used. The inside body surface shall be coated thinly with soapy water or oil.
B. 
The paving mixture shall be dumped directly from the mixing chambers into trucks and hauled immediately to the site of the project. The mixture shall be kept clean during the hauling and handling. Mixtures which have segregated or formed crusts or lumps that will not flatten or which remain in part in the truck when the mixture is dumped shall not be used. The mixture shall be dumped on wood or metal platforms not less than eight feet by 14 feet in size. When required, the platform shall be thinly coated with oil. The rate of dumping shall conform to that at which it can be spread. When dumped, the mixture shall have a temperature between 35° F. and 125° F.
The surface of the base course or intermediate course on which the pavement is to be placed shall be clean, dry, and free from frost when the paving operations are about to start, and shall be maintained in that condition. Faces of curbs, gutters, iron castings, and other objects within the pavement area shall be painted with asphalt oil grade RC-2 before the paving mixture is placed.
Unless rope joints are used, the edges of previously placed pavement shall be cut straight and painted with RC-2 before new top material is placed.
A. 
When so provided in the supplementary specifications, grade control side forms and machine spreading and finishing shall be used, except as hereafter prescribed. The side forms shall be of steel and of an approved design and shall be securely fastened by stakes; provided, however, that steel side forms may be omitted:
(1) 
When conditions would be adverse to setting side forms, in which case eight-inch wide strips of the bituminous concrete specified may first be constructed to the proper grade, in accordance with these specifications, so as to form part of the finished pavement and may be used as side forms, and, if necessary, they shall be armored with suitable bearing plates.
(2) 
When suitable abutting curbs or headers are available for use as side forms, armored with suitable bearing plates, when necessary.
(3) 
When the base course is parallel to the finished surface course and is laid within the tolerance limits of the surface course, provided that the wheel base of the machine is not less than 10 feet or the screed is controlled by a support of not less than 10 feet in length, and that the wheel base or support is in complete and continuous contact with the base course or the newly struck-off surface so that the mixture is being struck off at the proper grade without manual adjustment, and that it is found in actual operation that the machines are performing their work accurately and without injury to the pavement. When the machine is designed so that one end rides on side forms and the other end and the entire strikeoff is controlled and held at grade by an approved leveling device arranged so that the operator can positively and accurately maintain the assembly level, no grade control forms are required for the controlled end. The spreading and finishing equipment shall be of an approved type and shall have an adjustable floating screed riding on or controlled as to elevation by the side forms. Blade graders shall not be used. The screed shall operate without tearing, shoving, or gouging the pavement course and shall be able to form a finished surface as hereafter specified. Any equipment which does not produce an acceptable finished pavement shall be replaced.
B. 
The bituminous mixture shall be spread and finished by the mechanical equipment above described to the true grade, contour, thickness, and weight.
When machine spreading is not required and when the edges of the pavement are not adjacent to curbs or headers, there shall be placed and secured in place along the edges of the pavement six-inch planks of the thickness of the pavement, and they shall remain until the pavement is completed. The top course shall be placed in a uniform layer.
A. 
For rolling there shall be used three-wheel power-driven rollers having a load of not less than 330 pounds per linear inch of tread of rear wheels, with tandem rollers, weighing not less than eight tons. When not more than 1,200 square yards of wearing surface are laid per day, one three-wheel and one tandem roller shall be used. When more is laid, additional rollers shall be used as directed by the Borough Engineer.
B. 
The rolling shall commence as soon as the material has hardened sufficiently for proper stability. The rolling shall first be in a longitudinal direction with the three-wheel rollers, starting at each edge and working toward the center. The rolling at each trip shall overlap the previous path about 1/2 the width of the roller, and each trip shall be of slightly different length. The rolling shall be at the rate of not more than 150 square yards of surface per hour per roller. Subsequently, the longitudinal rolling shall be continued together with diagonal rolling with the tandem roller.
C. 
The roller wheels shall be kept clean and coated with oil in a manner approved by the Borough Engineer. Places inaccessible to rollers shall be compacted with tampers.
D. 
The surface course shall be rolled until it is thoroughly compacted. Adjacent to masonry, manholes, and similar structures, the surface shall be at a level of 1/4 inch above the level of such structures.
E. 
Immediately after the rolling of the top course is completed, and unless otherwise specified, it shall be covered with stone sand at the rate of five pounds per square yard and rerolled.
Based on unit areas of not more than 1,000 square yards, the top course shall weigh 100 pounds per square yard per inch of thickness.
The finished pavement shall be free from waves and from depressions and projections measuring more than 3/16 inch when measured with a ten-foot straight edge. The pavement shall be uniform in density and composition, thoroughly bonded, watertight, free from porous and rough spots, and at the proper grade and contour. Unsatisfactory portions of the pavement shall be replaced to the satisfaction of the Borough Engineer.
Bituminous concrete surfaces shall be constructed between May 1 and December 1 unless otherwise approved in writing by the Borough Engineer. They shall not be laid when it is raining, when the temperature is below 40° F., or when the conditions otherwise may be unfavorable in the opinion of the Borough Engineer.