4. In an old survey made when the declination was 2°5'E, the magnetic bearing of a given line was N35°15'E. The declination in same locality is now 1°10'W. What are the true bearing and the present magnetic bearing that would be used in retracing the line?

Structural Analysis
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Author:KASSIMALI, Aslam.
Publisher:KASSIMALI, Aslam.
Chapter2: Loads On Structures
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4. In an old survey made when the declination was 2°5'E, the magnetic bearing of a given line was
N35°15'E. The declination in same locality is now 1°10'W. What are the true bearing and the
present magnetic bearing that would be used in retracing the line?
5. At regular interval of 5 meters along line AB, the measured offset distances from the line AB to
the edge of the stream are: 6.5, 7.3, 12.1, 12.7, 14.5, 16.0, 18.6, 18.5, 16.4, 15.9, 14.7, 13.5,
12.75, 12.5, 9.7 and 2.0. What is the area between line AB and the stream?
a. Area by using Trapezoidal Rule
b. Area by using Simpson's 1/3 Rule
Transcribed Image Text:4. In an old survey made when the declination was 2°5'E, the magnetic bearing of a given line was N35°15'E. The declination in same locality is now 1°10'W. What are the true bearing and the present magnetic bearing that would be used in retracing the line? 5. At regular interval of 5 meters along line AB, the measured offset distances from the line AB to the edge of the stream are: 6.5, 7.3, 12.1, 12.7, 14.5, 16.0, 18.6, 18.5, 16.4, 15.9, 14.7, 13.5, 12.75, 12.5, 9.7 and 2.0. What is the area between line AB and the stream? a. Area by using Trapezoidal Rule b. Area by using Simpson's 1/3 Rule
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