Surveying Flashcards
(51 cards)
What is a survey in which the mean surface of earth is regarded as plane and not curved as it is really is?
Plane Surveying
Plane Surveying does not account for the curvature of the Earth.
What is the technique, profession, art, and science of determining the terrestrial position of points and the distances and angles between them?
Surveying
Surveying involves both two-dimensional and three-dimensional measurements.
What type of survey considers the shape of the Earth’s surface and exercises a higher degree of precision?
Geodetic Surveying
Geodetic Surveying accounts for the Earth’s curvature.
What are surveys usually undertaken for the purpose of determining and defining property lines and boundaries?
Cadastral Surveys
Cadastral Surveys are important for legal property descriptions.
What term refers to surveying streams, lakes, reservoirs, harbors, oceans, and other bodies of water?
Hydrographic Surveys
Hydrographic Surveys are vital for navigation and environmental management.
What is another name for optical tooling in surveying?
Industrial Surveys
Industrial Surveys apply surveying techniques in construction and assembly.
What type of surveys make use of photographs taken with specially designed cameras?
Photogrammetric Surveys
These surveys can be conducted from airplanes or ground stations.
What type of surveys involves alignment, grades, and earthwork quantities in connection with the planning, design, and construction of highways?
Route Surveys
Route Surveys are essential for infrastructure development.
What is the process made for determining the shape of the ground and the location and elevation of features?
Topographic Surveys
Topographic Surveys provide critical data for land use planning.
What is defined as the difference between the true value and the measured value of a quantity?
Error
Errors can significantly affect survey accuracy.
What are inaccuracies in measurements due to carelessness or poor execution called?
Mistakes
Blunders are considered large mistakes in surveying.
What consists of counting the number of steps or paces in a required distance?
Pacing
Pacing is a basic method of distance measurement.
What is defined as the length of a step in walking?
Pace
A pace may be measured from heel to heel or toe to toe.
What consists of 2 paces or a double step?
Stride
Stride is often used in estimating distances.
What branch of surveying measures distances with a chain and tape?
Chain Surveying
Chain Surveying is one of the oldest surveying methods.
What is any process where elevations of points or differences in elevation are determined?
Levelling
Levelling is crucial for construction and land surveying.
What method determines the area of a triangular lot using a transit setup at a point inside the lot?
Triangle Method
This method involves recording bearings and distances.
What is a line that follows the local direction of gravity as indicated by a plumb line?
Vertical Line
Vertical Lines are fundamental in establishing true verticality.
What is a curved surface that is perpendicular to the local plumb line at every point?
Level Surface
Level Surfaces are used in various surveying applications.
What is a plane perpendicular to the local direction of gravity?
Horizontal Plane
Horizontal Planes are essential for establishing level measurements.
What is the distance measured along a vertical line from a vertical datum to a point or object?
Elevation
Elevation is crucial for understanding topography.
What is an imaginary surface of the sea that is midway between high and low tides?
Mean Sea Level
Mean Sea Level is used as a reference point in surveying.
What is a fixed point of reference whose elevation is either known or assumed?
Bench Mark
Bench Marks are key in leveling operations.
What is a reading taken on a rod held on a point of known or assumed elevation?
Back Sight
Back Sights are used to establish reference elevations.