The true azimuth of a line measured from south is 154°30'. If the magnetic declination within the locality 2°15' west, the magnetic bearing which should be used to retrace the line in the field is N 23°15' W What is the true bearing of the line? [ Select]

Q: The magnetic declination in a locality is 2°17' W. Determine the true bearing aof the line whose…

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Q: Why assume that AB Azimuth is 30˚0'0"? Can't we find the azimuth of point F or E?

A: Why assume AB azimuth is 30 degree ?Can we find the azimuth of point F or E ?

Q: In an old survey performed in 1965, a line AB had a magnetic bearing of S75deg10’W when the magnetic…

A: Given Data:Magnetic Bearing = S75°10'WMagnetic declination = 4°30'Change in Magnetic declination =…

Q: Survey- The observed magnetic bearing of a line OE was found to be 185°. It was later discovered…

A: Observed MB=185o Local attraction=+1.5o Magnetic declination d=3.5o   It is needed to find the true…

Q: 1) The observed compass bearing of a line in 1991 was S37°30'E and the magnetic dedination of the…

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Q: Calculate the bearing of Azimuth: 0°50' 296°06' 205°54' 135°20' 33°27' 95°39'

A: In bearings  We measure the angles with respect to North or South whichever is nearer  in clockwise…

Q: The magnetic declination at a place if the magnetic bearing of sun at noon is 352°40' is: (a)…

A: Magnetic bearing of sun at noon kis = 352o40'To Find :Magnetic defclination ?

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.