What does a dig line indicate in earthworks?

A dig line is crucial in earthworks as it serves as a designated mark for excavation. This line essentially outlines the area where excavation is to take place, providing clear guidance for construction teams on the extent and limits of the earth-moving activities. By properly marking the dig line, workers can ensure that the excavation is accurate, which is important for maintaining design specifications and preventing unnecessary removal of soil or materials.

The dig line helps coordinate various aspects of a project, such as clearing, grading, and other site preparation activities, making it easier to visualize and execute the work required. Properly adhering to the dig line not only assists in maintaining the desired project elevations but also is integral in avoiding disturbances to adjacent areas that should not be excavated.

In contrast, the other options relate to distinct concepts within earthworks and surveying. For instance, survey measurements refer to techniques used to determine distances or angles between points, while slope calculations typically involve evaluating the steepness or degree of incline of a surface. Soil compaction methods focus on increasing the density of soil to improve its stability. Although all these elements are essential in the broader context of earthworks, they do not specifically pertain to the function and purpose of a dig line.