Control surveys are defined and classified into which two categories?

Prepare for the DMC Administrative Order Test No. 2007-29. Use flashcards, interactive quizzes, and detailed explanations for each question to enhance your understanding. Master the content with our comprehensive practice material and succeed!

Control surveys establish a reference framework for accurate positioning and tying measurements to a common coordinate system. They are classified into two categories: geodetic control surveys and project control surveys. Geodetic control surveys cover a wide area and create a network that accounts for the Earth's curvature, using high-precision methods such as triangulation, trilateration, and GNSS to connect local networks to national or international datums. Project control surveys are localized to a specific project area and provide the layout and alignment framework needed for design and construction; they may be tied to the geodetic network or use a local system, but they’re intended for the project scope rather than the broader region. The other options mix up data collection methods or focus areas (like aerial vs ground or topographic vs geodetic) rather than the fundamental way control networks are categorized.