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Immediately following the application of bituminous material the cover material" shall be distributed uniformly over the bituminous surface by means of approved mechanical it spreaders or trucks. Immediately after each application of cover material, brooming by ex- perienced and skilled workmen shall be done to secure a uniform distribution which will t� ensure a smooth surface, Additional aggregate shall be placed by hand on any areas not pro- perly covered. Immediately after spreading and dragging the cover material the entire sur- face shall be rolled with a three ton to five ton steel tired roller. Rolling shall begin at the adges and progress to the center of the surface, uniformly lapping each preceding track11 and covering thoroughly the entire surface. The rolling shall be repeated as much as nec- essary to ensure thorough keying of the cover material into the bituminous material.] r The second bituminous application and the second application of cover material shall�i be done in a manner as described above for the first application. The finished surface shall be uniform and shall conform to the lines, grades and typical cross sections. (e.4) Asphaltic Concrete Wearing Surface This consists of the construction of an asphaltic concrete surface course composed of a mixture of aggregate, mineral filler and asphalt cement, properly laid upon a prepared base. The asphaltic concrete shall be in conformance with the Florida State Road Department Specifications for an asphaltic concrete surface course Type II, unless otherwise specified below. The thickness will be as specified in Section X -3(b), and it shall be placed on a compacted base with a seal coat as specified in these regulations. Pavement thick= ness more than 1/8" deficient shall not be acceptable. All equipment necessary for the proper construction of this work shall be on the project, in fc.rst class working condition, and shall have been approved by the engineer before construction is started. Before any bituminous material is applied all loose material, dust, dirt, caked clay and foreign material which might prevent proper bond with the existing surface] will be moved to the shoulders for the full width of the application. No bituminous material shall be applied when the temperature of the air is less than 50 degrees F. or when, in the s! opinion of the engineer, the weather conditions or the condition of the existing surface is'I unsuitable. After proper cleaning a tack coat shall be applied with a pressure distributor. i The bituminous material shall be heated to a suitable consistency as designated by the eng- ineer. The bituminous material shall be applied in a thin uniform layer. The rate of application shall be between 0.04 to 0.08 gallons per square yard'. The exact rate shall be designated by the engineer. The tack coat shall be applied sufficiently in advance of the lays ing of the wearing surface to permit drying but shall not be applied so far in advance or over such an area as to lose its adhesiveness as a result of being covered with dust or other foreign material. The tack coat may be cut-back asphalt grade RC -1S or other approved material. The tack coat -ishall be kept free from traffic until the wearing surface is laid. R 'r The constituents of the mixture shall be combined in such proportions as to produce a mixture having at least 1600 lbs. stability at 140 degrees F. as determined by the 1 1 -0 1 � I