In 1984, the compass reading of the azimuth of a line from north was 141°33’40’’. The magnetic declination at that time is 2°21’ E. It was found out that the secular variation per year is 5’ E. Determine the magnetic bearing in 1995.

Q: As shown in the figure, at point A, the height of the theodolite i=1.400m is measured, and the…

A: Height of the theodolite = 1.400 m The reading of the upper wire = 1.242m The reading of the middle…

Q: definition of a datum in seismic reflection Choose one: a. a level equal to the mean-sea level b.…

A: ANS  :    ALL OF THE OPTIONS ARE TRUE Mean Sea Level (MSL), a standard global datum for measuring…

Q: Determine the error of a line, 256.32 m long, measured using a 50 m steel tape at 38 °C. The steel…

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Q: The readings given below were made with a tacheometric theodolite having a multiplying constant of…

A: Given data:- Multiplying constant, K=100 Additive constant, C=0 Reduced level at station A = 100.0 m…

Q: 1.a.find interval latitude moment

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Q: In 1925, the magnetic bearing of a line OA was N 15*45' W, the magnetic declination at that time is…

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Q: In a particular year, the magnetic declination was 1°20' E and the magnetic bearing of a certain…

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Q: 3) In 1925,the magnetic bearing of a line OA was N 15°45' W,the magnetic declination at that time is…

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Q: Problem 9.9 - Determine the moment of inertia of the crosshatched region about the x-axis.…

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Control Survey and Geodetic reductions

Control surveys or survey controls are used to establish reference points as a basis for various construction activities. Vertical and horizontal control points are to be established in a control survey to increase accuracy. After establishing the control points, all other types of surveys such as topographic, right-of-way, aerial mapping, construction layout, boundary surveys, and utility mapping can be worked upon so that control networks can be formed. The place from which the observations are made is called a survey station.