What is the primary purpose of a borrow pit in surveying?

The primary purpose of a borrow pit in surveying is to serve as a source of granular fill material. Borrow pits are excavated areas where soil, sand, gravel, or other materials are extracted for use in construction projects, such as road building or earthworks. This material is crucial for creating a stable foundation, leveling areas, or providing backfill for embankments. The extracted aggregates can also be utilized to improve structural integrity in various construction applications.

While a borrow pit may impact land elevation due to the removal of material, its main function is not to measure elevation itself. Similarly, a borrow pit is not intended as a location for construction waste or a type of drainage system. It focuses on providing accessible materials necessary for construction, making it an essential component in land development and civil engineering projects. This understanding highlights the relevance of borrow pits in the overall context of surveying and construction practices.