1400 SEINER DR 2018-01-01 MF Import

i ' ' � 1 � � PORT OF EVERETT W MARINE VIEW DR IMPROVEMENTS CIP N0. 3-0-003-09 PROJECTNO. PD•WM•20006-01 in order to prevent the HMA mixture from adhering to the hauling equipment, truck beds are lo be sprayed with an environmentally benign release agent. Excess release agent shall be drained prior to filling hauling equipment with HMA. Petroleum derivatives or other coating materials that contaminate or alter the characteristics of the HMA shall not be used. For hoppei trucks, the conveyer shall be in operation during the process o( applying the release agent. 5•04.3(3) h�f Mix Asphalt Pavers HMA pavers shall be sel(-contained, power•propelled units, provided with an intemally-heated vibratory screed or strike•off assembly and shall be capable of spreading and finishing courses of HMA plant mix material in lane widths required by the oaving section shown in the Plans. The screed or strike-off assembly shall effectively produce a finished surface of the required evenness and texture without tearing, shoving, segregating, or gouging the mixture. Extensions will be allowed provided they produce the same results, including ride, density, and surface texture as obtained by the primary screed or strike off assembly. Extensions without, augers, vibration and heated screeds shall not be used in the traveled way. When laying HMA, the paver shall be operated at a unifortn forward speed consistent with the plant production rate and roller train capacity to result in a continuous operation. The auger speed and flight gate opening shall be adjusted to coordinate with the operation. The paver shall be equipped with automatic screed controls with sensors for either or both sides of the paver. The controls shall be capable of sensing grade from an outside reference line, sensing the transverse slope of the screed, and providing automatic signals that operate the screed lo maintain the desired grade a�d transverse slope. The sensor shall be constructed so it wili operate from a reference line or a mat referencing device. The transverse slope controller shall be capable of maintaining the screed at the desired slope within plus or minus 0.1 percent. The paver shall be equipped with automatic feeder controls, properly adjusted to maintain a uni(orm depth of material ahead �f the screed. Manual operalion of the screed will be permitted in the construction of iRegulariy shaped and mir�or areas. These areas include, but are not limited to, gore areas, road approaches, tapers and left-tum channelization. When specified in the conlract, reference lines for vertical control will be required. Lines shall be placed on both outer edges of the traveled way of each roadway. Horizontal control uGlizing the reference line will be pemiitted. The grade and slope for intermediate lanes shall be controlled automatically from re(erence lines or by means of a mat referencing device and a slope control device. When the finish of the grade prepared for paving is superior to the established tolerances and when, in the opinion of the Engineer, further improvement to the line, grade, cross•section, and smoothness can best be achieved without the use of the reference line, a mat referencing device may be substiluted for the reference line. Substitution of lhe device will be subject to the continued approval of the Engineer. A joint matcher may be used subject to the approval of the Engineer. The reference line may be removed after the completion of lhe first course of HMA when approved by the Engineer. Whenever the Engineer detertnines that any of these methods are failing lo provide the necessary vertical control, the reference lines will be reinstalled by the Contractor. Page 10 of 50