In 1960 a line XY had a magnetic bearing of N 80°23’ E. At that time the magnetic declination was 3°45’ west. In a new survey performed in 1987, the declination in the same locality changed to 2°50’ east, determine the magnetic bearing and true bearing of the line based on the new survey.

Q: (Q2) Compute the geodetic azimuth of the line PQ in the below figure, if you know the magnetic…

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Q: the bearing of line in 1975 was found to be N 19°09`W. in 2003, it was found out that at the said…

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Q: PROBLEM: A field is in the form of a regular pentagon. It is required to determine the directions of…

A: Given data: magnetic declination of the locality is 05°30' west. magnetic azimuth reckoned from…

Q: The magnetic declination in a locality  is 3° 11’ W. What if the a is AB, S 29° 42’ E      and b is…

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Q: A = 40°20'15", Weight = 3 2A = 80°40'30", Weight = 2 4A = 161°21'40", Weight = 1

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Q: In an old survey performed in 1965, a line AB had a magnetic bearing of S 75°10' W when the magnetic…

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Q: The interior angles of a quadrilateral were observed to be: A = 103°33’10’’, B = 114°54’55’’, C =…

A: Given: The interior angle A is 103°33’10’’. The interior angle B is 114°54’55’’. The interior angle…

Q: n the declination was 4°30' W. Determine annual declination change observed as

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Q: The true and magnetic bearing of a line are 78° 45' and 75° 30' respectively. What is the magnetic…

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

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Q: Question 76 The magnetic bearing of a line (on full-circle mensuration basis) is 55 ° 30′ East. The…

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Q: 3. In 1995, a line had a magnetic bearing of N80°23'E. At that time the magnetic declination was…

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Q: A line between stations P and Q laid on a slope of 1 in 5 was measured as 350 m using a 50 m tape.…

A: Given- Slope of line 1 in 5 350 m length using 50 m tape. Tape is short by 0.1 m Correct horizontal…

Q: In an old survey made when the declination was 3°10‘ W the magnetic bearing of the given line was N…

A: True Bearing: A true bearing is computed in respect to a fixed horizontal reference plane of true…

Q: A line has a magnetic bearing of S. 4° 30' E. in 1990 when the declination was 1° 30' E. What is the…

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Q: 10. If azimuth from the North of line DE is 219°02, what is the azimuth of DE from the South?

A: 10. Consider the following figure.

Q: Rick and Morty, using the portal gun, travels back in time around 1890. Using a magnetic compass,…

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Q: . In an old survey made when the declination was 2010'W, the magnetic bearing of a given line was…

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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: The bearing of line in 1975 was found to be N 19°09' W. In 2003, it was found out that at the said…

A: Option (c) is correct. Using the fact that true bearing doesn't change over time. The MB can be…

Q: A property line surveyed in 1975 by Engr. Carasco. The line was recorded with a magnetic bearing of…

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Q: divergence W was 17° 30, the quarter-circular magnetic direction of a straight line was measured and…

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Q: Explain the Embedment Correction Factor Chart by Janbu et al. (1956; from Christian and Carrier…

A: Embedment Correction Factor  Chart by Janbu is used in soil foundation to determine the various…

Q: An open traverse PQRST is surveyed using a theodolite and the consecutive coordinates obtained are…

A: Given data- An open traverse PQRST given, Northing, Southing, Easting & Westing values are given…

Q: A subtended angle of 17°21'34.8" was read on a 4 m long subtense bar using a transit. Compute the…

A: Subtense bar method is a method used in surveying to calculate the horizontal distances. In this…

Q: data from an old survey record. Present Magnetic 1870 Magnetic Bearing Present Magnetic Bearing…

A: To find magnetic declination in 1870 The problem is as given below

Q: Magnetic Declination: 1. In a compass survey made twenty years ago the observed magnetic bearing of…

A: As per bartleby guidelines, only 1st question among multiple questions need to be solved. For rest…

Q: Solve and show full solutions. With magnetic declination of 1°10’ W, what is the true bearing of the…

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Q: A compass survey made 35 years ago observed that the magnetic bearing of a reference line AB was S…

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Q: Magnetic Declination: 1. In a compass survey made twenty years ago the observed magnetic bearing of…

A: Given data in question  Magnetic bearing  42°21` Magnetic Declination 6°25` and 10°35` To find out…

Q: 3. Two sides and the included angle of a triangle were measured as under: a. 757.64 ± 0.045 m b.…

A: Given Data: Two sides and the included angle of a triangle were measured as: (a) 757.64±0.045 m(b)…

Q: In an old survey performed in 1965, a line AB had a magnetic bearing of S75o10’W when the magnetic…

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Q: In an old survey performed in 1965, a line AB had a magnetic bearing of S75°10'W when the magnetic…

A: The magnetic bearing of AB in 1987 should be??

Q: Please compute for the magnetic bearing in the year 2021. If the magnetic declination in 1996 was…

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Q: An angle APB is measured at different times using various instruments and procedures. The results,…

A: Most probable value: The value of an angle at a triangulation station that is found from the value…

Q: In 2001, the magnetic declination was 1°25' E and the measured magnetic bearing of line MN was N…

A: Given data- Year 2001- Magnetic bearing (MB) = N 23'20o W Magnetic declination (MD) = 1o25' E…

Q: 3. In an old survey made when the declination was 2010'W, the magnetic bearing of a given line was…

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Q: In a survey made, the declination of a given line was 3°10‘ W and the magnetic bearing was N…

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Q: True bearing of station A when observed from station M was 210° and the magnetic bearing of A was…

A: Given data: True bearing of MA = 210o Magnetic bearing of MA = 238o Magnetic bearing of MN = 126o

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: C. Determine the magnitude of the resultant and its inclinahon 3000 76000 5000 8. B. 4000 SO00 1000…

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Q: What if the magnetic declination in a locality is 3° 11' W. Determine the true bearing (B) and true…

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Q: Geophysical surveys can provide information about the distribution of a physical property. What is…

A: There are different types of surveys. The classification of the rock is a complicated process. We…

Q: 3. In construction survey, a line BC 57.89m is to be laid out using a theodolite. The line has a…

A: Finding out elevation of point B.

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.