Problem 6.4If the annual declination has an average value of 6’ 9” W, what is the magnetic bearingof the line observed in Problem 6.4 in 2020? Also, determine the magnetic azimuthfrom south. Neglect the effect of the local attraction.ANSWER KEY: θb Magnetic =N 69 ̊ 17’ 36” Eθa Magnetic =S 249 ̊ 17’ 36”The photo is the reference. Sample Problem 6.4A property line surveyed in 1975 by Engr. Carasco. The line was recorded with amagnetic bearing of S 57° 28' 15" W. The magnetic declination at the time of surveywas 2° 43' E. Determine the true bearing and the azimuth of the property line (fromNorth).Solution:MN2° 43'Property LineFigure 6.16 Illustration of Sample Problem 6.4The easiest way in dealing with angles is to illustrate the situation. After the illustration,the bearing and azimuth are determine mathematically based on the Figure.The magnetic declination is given with the magnitude of 2° 43' E. This means that themagnetic pole is inclined 2° 43' to the East of the true North.For the true bearing:The bearing of a line can be measure from either North or South Pole as long as itsvalue is in between 0 to 90 degrees. In this problem, we will measure the bearing fromSouth to meet the bearings criterion.Ob True = 57° 28'15" + 2° 43'Өъ Тrие — S 60° 11'15" WFor the azimuth:The azimuth should be measure from North as stated in the problem.a True = 180° + 60° 11'15"Oa True = N 240° 11'15"The true bearing of the property line is S 60° 11'15" W and its true azimuth with respectto North is 240° 11'15".

Answered: Image /qna-images/answer/3af5e1aa-829e-4c75-a229-2b3ab5b1b35b.jpg

Answered: W, what is the magnetic bearing of the…

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

See similar textbooks

Related questions

Question

Problem 6.4
If the annual declination has an average value of 6’ 9” W, what is the magnetic bearing
of the line observed in Problem 6.4 in 2020? Also, determine the magnetic azimuth
from south. Neglect the effect of the local attraction.

ANSWER KEY:
θb Magnetic =N 69 ̊ 17’ 36” E
θa Magnetic =S 249 ̊ 17’ 36”

The photo is the reference.

Sample Problem 6.4
A property line surveyed in 1975 by Engr. Carasco. The line was recorded with a
magnetic bearing of S 57° 28' 15" W. The magnetic declination at the time of survey
was 2° 43' E. Determine the true bearing and the azimuth of the property line (from
North).
Solution:
MN
2° 43'
Property Line
Figure 6.16 Illustration of Sample Problem 6.4
The easiest way in dealing with angles is to illustrate the situation. After the illustration,
the bearing and azimuth are determine mathematically based on the Figure.
The magnetic declination is given with the magnitude of 2° 43' E. This means that the
magnetic pole is inclined 2° 43' to the East of the true North.
For the true bearing:
The bearing of a line can be measure from either North or South Pole as long as its
value is in between 0 to 90 degrees. In this problem, we will measure the bearing from
South to meet the bearings criterion.
Ob True = 57° 28'15" + 2° 43'
Өъ Тrие — S 60° 11'15" W
For the azimuth:
The azimuth should be measure from North as stated in the problem.
a True = 180° + 60° 11'15"
Oa True = N 240° 11'15"
The true bearing of the property line is S 60° 11'15" W and its true azimuth with respect
to North is 240° 11'15".

Expert Solution

Trending now

This is a popular solution!

Step by step

Solved in 2 steps with 2 images

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, civil-engineering and related others by exploring similar questions and additional content below.

Similar questions