Which of the following is NOT a purpose of grading in excavation?

The purpose of grading in excavation primarily revolves around ensuring proper site preparation and functionality rather than enhancing soil fertility. When grading is performed, the focus is on shaping the landscape to manage surface water, improve stability, and create a visually appealing environment.

Improving aesthetics of a site is a significant aspect of grading, as a well-graded area can enhance the overall appearance and contribute to the design of a project. Facilitating drainage is critical because proper grading directs water runoff efficiently, preventing pooling and erosion, which can lead to structural issues. Increasing soil stability is another essential function of grading, as it involves manipulating the ground to provide a more secure foundation for structures and landscaping.

However, enhancing soil fertility does not fall under the main goals of grading. Soil fertility concerns are more related to the management of nutrients and organic matter within the soil, which is typically addressed through agricultural practices or soil amendments rather than through grading operations. Grading focuses more on the physical characteristics of the land rather than its nutritional content.