What is the principle of tacheometry?
The principle of tacheometric surveying is based on the property of an isosceles triangle. It means that; the ratio of the distance of the base from the apex and the length of the base is always constant.
What does the term tacheometry mean?
quick measure
Tacheometry (/ˌtækiˈɒmɪtri/; from Greek for “quick measure”) is a system of rapid surveying, by which the horizontal and vertical positions of points on the earth’s surface relative to one another are determined without using a chain or tape, or a separate levelling instrument.
What are the common errors encountered in tacheometry?
Errors and Precautions in Tacheometric Surveying: The errors may be instrumental errors, due to manipulation and sighting or due to natural causes. The instrumental errors may be due to imperfect permanent adjustments in the instrument and due to incorrect graduations on the stadia rod.
In which situation Tacheometry is used?
Definition of Tacheometry: Thus it is best suited when obstacles such as steep and broken ground, deep ravines, stretches of water or swamps are met with Tacheometry is mainly used while preparing contour plans and traversing and is also suitable for hydrographic surveys, location surveys of roads, railways, etc.
What do you mean by Tacheometry give principles of Tacheometry?
Principle of tacheometry: The principle of tacheometer is based on property of isosceles triangles, where the ratio of distance of the base from apex and length of the base is always constant.
What do you mean by tacheometry give principles of tacheometry?
Where is tacheometry used?
Which method of Tachometry is most common in use?
As in the field of tacheometric surveying ‘Stadia Method’ is the most widely used procedure so we will discuss the principle behind it. The stadia method follows the principle that in similar isosceles triangles the ratio of the perpendicular to the base is constant.
Which of these is not an error due to natural causes in case of stadia surveying?
So, Parallax is not an error due to natural causes.
Which is the object of tacheometry?
The primary objective of this tacheometric surveying is to prepare contoured maps or plans requiring both the horizontal as well as vertical control. On surveys of higher accuracy, it provides a check on distances measured with the tape.
Which instrument is used in tacheometry?
tacheometer
The instrument for tacheometry is the tacheometer. By means of it the horizontal distance is determined by optical or electronic (electro-optical) distance measurement, and the horizontal angle is determined numerically or graphically.
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