C and R Asphalt Grading and Rock

Services

Grading and Rock

The Lexington area has experienced a large amount of development in the last decade. Along with the growth and development comes new parking lots. "New Construction" as we call it has become a large part of C & R's sales over the years. So much so that we have designated an entire crew (The Rock Crew) to the light earth grading, excavating and the installation and compaction of rock. This crew prepares the area to be paved for one of our Two Paving Crews to move in and start the actual asphalt lay down.

The Rock Crews work is generated mainly in the form of sub contracts from general contractors, site contractors, and excavating contractors. Other forms of work come from existing parking lot expansions, new streets and farm roads.

Preparation of Subgrade: All-debris, vegetation, or other perishable materials shall be removed from the job site, except for trees or shrubs designated for preservation. The site to be paved shall be graded to the required section and all excess material removed from the location of the work. Material in soft spots shall be removed to the depth required to provide a firm foundation and shall be replaced with a material equal to, or better than, the best subgrade material on the site. The entire subgrade area shall be thoroughly compacted at the lowest moisture content at which a handful of the soil can be molded by a firm closing of the hand. The surface of the subgrade after compaction shall be hard, uniform, smooth and true to grade and cross-section. If specified by the owner or his engineer prior to placing the base course, designated subgrade areas shall be treated with a soil sterilant at the rate specified by the manufacturer to prevent the growth of weeds. If specified, the subgrade shall be primed.

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