What error does curvature correction aim to minimize in surveys?

Curvature correction is specifically designed to address the distortion in measurements caused by the curvature of the Earth. When conducting surveys over substantial distances, the Earth’s spherical shape can lead to discrepancies between the actual measurement along the Earth's surface and a straight line measurement. This is particularly significant in geodetic engineering where precise measurements are critical, especially for long-range observations that exceed several kilometers.

By applying curvature correction, surveyors can adjust their measurements to accurately reflect the true horizontal distances, ensuring that the calculations align with the Earth's geometric properties. This is essential for maintaining accuracy in mapping, construction, and land development projects, where precise spatial relationships are necessary.