A rough grade and a finish grade are two distinct stages in the process of preparing a site for building.
A rough grade involves the initial grading or leveling of the ground to establish the basic contours of the site. It typically involves removing any vegetation, rocks, or debris and filling in low spots with soil or gravel. The aim of the rough grade is to establish a stable base for the construction process, ensuring that water is properly drained away from the building and that the site is level enough to support the foundation.
A finish grade, on the other hand, is the final stage of grading, which involves smoothing and leveling the soil to a fine, even surface that is ready for landscaping or paving. This process involves using heavy equipment to carefully remove any remaining bumps or depressions in the soil, as well as adding or removing soil as needed to achieve the desired grade. The finish grade creates a smooth, level surface for the installation of sidewalks, driveways, and other hardscape features.
In summary, while rough grading focuses on establishing the basic contours and drainage of the site, finish grading is the final step in creating a smooth, level surface that is ready for landscaping and construction of the building's foundation.