Civil Engineering - Surveying - Discussion
Discussion Forum : Surveying - Section 6 (Q.No. 30)
30.
The magnetic bearing of a line is 32° and the magnetic declination is 10° 15' W. The true bearing is
Discussion:
22 comments Page 2 of 3.
Aslam said:
8 years ago
True bearing=MB- Declination.
TB=32°-10°15
= 21°45.
TB=32°-10°15
= 21°45.
Abhishek said:
8 years ago
If Magnetic Declination towards the W it will be -ve.
If its towards E it is +ve.
That's why we have subtracted the magnetic declination from the magnetic bearing.
If its towards E it is +ve.
That's why we have subtracted the magnetic declination from the magnetic bearing.
Kaweri said:
8 years ago
Magnetic bearing toward West is -ve so just subtract.
Mit said:
8 years ago
@Amit.
TB = MB - MD if declination is westward.
TB = MB - MD if declination is westward.
Amit said:
8 years ago
TB = MB + MD if declination is eastward.
TB = MB + MD if declination is westward.
TB = MB + MD if declination is westward.
Angel said:
8 years ago
The Answer is A) declination is westward ie, negative.
Pooja said:
8 years ago
Answer should be B.
Sushil hooda said:
8 years ago
So, the Answer should be A.
T.B = M.B+magnetic declination.
T.B = 32'-10'15'.
T.B = 21'45'.
T.B = M.B+magnetic declination.
T.B = 32'-10'15'.
T.B = 21'45'.
Sanjay said:
9 years ago
Answer should be B.
True bearing=magnetic bearing+magnetic declination.
True bearing=magnetic bearing+magnetic declination.
Amit said:
9 years ago
@Anmol.
60-15 = 45 minutes? Explain it.
60-15 = 45 minutes? Explain it.
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