Surveying.L [Basic Surveying Terms] (L1) Flashcards
A point with a
known elevation used as a
reference in surveying.
Benchmark
Linesconnecting points of equal
elevation on a map, representing
the shape of the land.
Contour Lines
A series of connected survey lines forming the outline of a
survey area.
Traverse
A point where measurements or observations are taken.
Station
Satellite-based navigation system used for precise location determination.
GPS (Global Positioning System)
A measured reference
line used in surveying.
Baseline
The horizontal angle measured clockwise from a reference direction, often north
Azimuth
A reference surface or level used as a base for measurements.
Datum
The vertical distance above a reference point or datum.
Elevation
An electronic device combining theodolite and distance measuring capabilities.
Total Station
A unit of length used in
surveying, typically 66 feet.
Chain
A theodolite with a telescope that can be rotated in a horizontal plane.
Transit
A geometrically corrected aerial photograph.
Orthophoto
A tool used tomeasure the area of a planar figure on a map
Planimeter
A method of determining distances or elevations by measuring angles in a triangle formed by survey lines.
Triangulation
The ratio between a distance on a map and the corresponding distance on the ground.
Scale
A method of locating a point by intersecting lines from known points.
Intersection
The shape of the Earth’s gravity field, used as a reference for elevations.
Geoid
A straightedge or rule with sights used in surveying to align and measure angles.
Alidade
Introduced in the 16th century, it measures horizontal and vertical angles, essential for triangulation and precise angle measurements.
Theodolite
An improvement on the theodolite, it allows for precise measurements of both horizontal and vertical angles
Transit Theodolite
An early leveling instrument that simplifies the process of measuring height differences.
Dumpy Level
Combining electronic theodolite and distance measuring capabilities, it revolutionized surveying by automating measurements and calculations.
Total Station
Replaced traditional chain or tape
measurements, allowing for faster
and more precise distance measurements.
Electronic Distance Measurment [Electronic Distance Measurement]
