The magnetic declination in a locality is 3° 10' W. Determine the magnetic bearing of line AB whose true bearing is N 88° 21' w. a. N 91° 31'W b. Not listed on the given choices c. N 85°11" w d. S 88° 29' W e. N 1° 31' W

The magnetic declination in a locality is 3° 10' W. Determine the magnetic bearing of line AB whose true bearing is N 88° 21' w. a. N 91° 31'W b. Not listed on the given choices c. N 85°11" w d. S 88° 29' W e. N 1° 31' W

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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Concept explainers

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.

Question

The magnetic declination in a locality is 3° 10' W. Determine the magnetic bearing of line AB
whose true bearing is N 88° 21' w.
a. N 91° 31'W
b. Not listed on the given choices
С.
N 85°11" W
d. S 88° 29' w
N 1° 31' W
е.

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The true azimuth of a line measured from south is 154°30'. If the magnetic declination within the locality is 2°15' west, the magnetic bearing which should be used to retrace the line in the field is?ans. N23°15'W show solution
Convert the following azimuths to equivalent bearings AZn BC = 122°46’