ETC ETC Surveying & Site Assessment

Question 1

What instrument is used to measure horizontal and vertical angles in surveying?

Accepted Answer

Theodolite

Answer

A theodolite is a precision optical instrument used to measure horizontal and vertical angles in surveying and construction.

Question 2

What is a benchmark in surveying?

Accepted Answer

A permanently established point of known elevation used as a reference

Answer

A benchmark is a fixed reference point with a known elevation, used as a datum for leveling surveys.

Question 3

What does a contour line on a topographic map represent?

Accepted Answer

A line connecting points of equal elevation above a datum

Answer

Contour lines connect all points of equal elevation, allowing topographic maps to represent three-dimensional terrain on a flat surface.

Question 4

Which surveying method uses GPS satellites to determine precise coordinates?

Accepted Answer

GNSS/GPS surveying

Answer

GNSS/GPS surveying uses signals from multiple satellites to determine precise three-dimensional coordinates of a point.

Question 5

What is the purpose of a hand level during field reconnaissance?

Accepted Answer

To quickly estimate elevations and horizontal lines in the field

Answer

A hand level allows a technician to establish an approximate horizontal line of sight for quick elevation estimates in the field.

(ETC) Engineering Technician Certification Practice Test