Civil Engineering - Surveying - Discussion
Discussion Forum : Surveying - Section 4 (Q.No. 18)
18.
The method of finding out the difference in elevation between two points for eliminating the effect of curvature and refraction, is
Discussion:
6 comments Page 1 of 1.
Manish said:
8 years ago
Answer is 3 because in reciprocal levelling curvature of the earth is eliminated and refraction is considered while differential levelling both are eliminated.
Karam said:
8 years ago
Answer should be 3.
Tushar bhosale said:
7 years ago
Reciprocal levelling is the right answer.
Tushar bhosale said:
7 years ago
In reciprocal leveling.
If the level is placed exactly midway between two points and staff readings are taken to determine the difference of level then the errors (due to inclined colimiation line, curvature and refraction. ) are automatically eliminated.
If the level is placed exactly midway between two points and staff readings are taken to determine the difference of level then the errors (due to inclined colimiation line, curvature and refraction. ) are automatically eliminated.
(4)
Umesh said:
6 years ago
Reciprocal correction is eliminated the curvature, collimation and refraction correction is partially. So, C is correct.
Haider Warraich said:
1 year ago
To eliminate the effect of curvature and refraction, Reciprocal levelling is to be done.
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