What are “control points” used for in surveying?

Control points serve a crucial role in surveying as they provide reference markers that help establish a precise framework for a survey. These points are accurately measured locations that have known coordinates, which can be used as a basis for conducting further measurements in the area. By using control points, surveyors can ensure that their measurements are consistent and accurate, which is essential for creating reliable maps, legal descriptions, and in construction layouts.

Through these reference markers, surveyors can maintain a consistent coordinate system, facilitate the integration of data from different surveys, and ensure that all elements of a project are aligned correctly. This reliance on established control points is key to minimizing errors in measurements and ensuring that the survey work adheres to accepted standards in the industry.