1.01 Contractor must scrape the dirt off the asphalt to find the edge of the pavement, and thoroughly sweep the base course, old pavement, or existing surface so that it is clean and free from dust and foreign material until HMA is placed. 1.02 When the existing pavement surface is gravel or stone or when a new gravel or stone base is constructed, the surface shall be graded and compacted by rolling to produce a smooth and uniform surface prior to paving with HMA. The cost of preparing existing gravel surfaces should be included in the Asphalt Paving unit cost. When a new base is installed grading, compaction and preparation cost shall be included in the Base Course unit price. 1.03 Apply tack coat prior to placement of asphalt per SCDOT 2007 Standard Road Specifications, item 401.4.18. 1.04 The Contractor shall furnish all labor and equipment to maintain traffic during construction. The cost of maintaining traffic shall be included in the cost of the various items. 1.05 Full Depth Reclamation shall include grinding specified depth of existing asphalt and mix with existing stone and subgrade. Additives such as Portland cement or lime may be used when specified. Area is to be compacted in layers, if hole is more than four (4) inches deep. Compact layers thoroughly to maximum of three (3) inches in thickness. New base to be proof-rolled prior to paving. Reclamation shall be in conformance with section 400 of SCDOT Standard Specifications.
