the bearing of line in 1975 was found to be N 19°09`W. in 2003, it was found out that at the said survey location yhe magnetic declination moves 1°20` West every 4 years since. if we are to survey the same line, what would be its magnetic bearing in 2003?

Q: 1. Use the simulation to create the pattern of equipotential lines shown below. 30 V 40 V 50 V 50 V…

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Q: 1. Assume the magnetic bearing of line AB read in 1878 was N26°15′E. The declination at the time and…

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A: Answer (19) we are given In 1960 Magnetic bearing of line = N 80o 23' E Magnetic Declination = 3o45'…

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A:

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A: To find out the value of theta for the point C.

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.