Which term includes surveys conducted to establish positions of points of reference for projects with a limited geographic coverage such as a municipality, large isolated tract, or group of municipalities, covering primary control (third order), secondary control (fourth order) and tertiary control?

• A. Geodetic Control Surveys
• B. Cadastral Surveys
• C. Project Control Surveys
• D. Public Land Surveys

Answer: (C)

Surveys conducted to establish a reference framework for a specific project within a limited area are called Project Control Surveys. This approach creates a control network tailored to the project’s geographic scope—such as a municipality or a group of municipalities—and uses a hierarchy of accuracy: primary control points (third order), secondary control points (fourth order), and tertiary control for local checks. This ensures every measurement in the project is tied to a consistent coordinate system derived specifically for that area, which is essential for accurate design and construction within a confined region.

Geodetic Control Surveys cover broader ranges and aim to establish widely distributed, stable control networks over large areas, not just a single project site. Cadastral Surveys focus on mapping and establishing boundaries of individual land parcels. Public Land Surveys refer to historical or government-wide surveys of public lands, not project-specific networks.