ETC Surveying & Site Assessment Flashcards
6 cards from real ETC practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 ETC Surveying & Site Assessment flashcards as text
What instrument is used to measure horizontal and vertical angles in surveying?
Answer: Theodolite
A theodolite is a precision optical instrument used to measure horizontal and vertical angles in surveying and construction.
What is a benchmark in surveying?
Answer: A permanently established point of known elevation used as a reference
A benchmark is a fixed reference point with a known elevation, used as a datum for leveling surveys.
What does a contour line on a topographic map represent?
Answer: A line connecting points of equal elevation above a datum
Contour lines connect all points of equal elevation, allowing topographic maps to represent three-dimensional terrain on a flat surface.
Which surveying method uses GPS satellites to determine precise coordinates?
Answer: GNSS/GPS surveying
GNSS/GPS surveying uses signals from multiple satellites to determine precise three-dimensional coordinates of a point.
What is the purpose of a hand level during field reconnaissance?
Answer: To quickly estimate elevations and horizontal lines in the field
A hand level allows a technician to establish an approximate horizontal line of sight for quick elevation estimates in the field.
What does 'bearing' mean in the context of land surveying?
Answer: The direction of a survey line expressed as an angle from north or south
In surveying, bearing is the horizontal direction of a line expressed as an angle measured from north or south toward east or west.