The true bearing of a TV tower T, as observed from a station A near the survey laboratory was 358°00' and the magnetic bearing of same was 8°00'. The fore bearing of lines AB, AC and AD, when measured with the prismatic compass were found to be 290°00', 340°00' and 30°00', respectively. Which of the following statement(s) is/are correct? True bearing of line AB = 300° True bearing of line AC = 330° Correct Option Declination at A = 10°00' east C True bearing of line AD is 20° Correct Option

Q: traverse are as follows: AB= 202.74, BC=285.87, CD=499.37, DE=321.33, and EA = 382.78. (Note: Assume…

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Q: I would like an example of how to calculate the bearing and the distances. I can't seem to figure…

A: Information required: Northing represents latitude and Easting represents departure. Given:  For…

Q: The magnetic bearing of line XY was observed to be S 31° W, when the declination was 2° E. Point Z…

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Q: Line AP The following observations were taken from stations P and Q. Length (m) Bearings N 60° 30' E…

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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: A line of three-wire differential levels goes from benchmark Gloria o benchmark Carey. The length of…

A: Compensator accuracy = ±0.3 '' Length of line = 2199 m Reading error = ± 1 mm/km Inclined…

Q: Problem #1: Leveling in a loop Leveling is performed to determine elevations on the ground and…

A: Given: Station BS HI FS Elevation J A 319.83   315.76 TP1 5.18 322.87 2.14 B TP2 2.91…

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…

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.