A transit is set up at point B which is between A and B. The vertical angle observed towards A is known to be -20° and that of C is + 12°. The horizontal distance between A and B is 642.8m and that of B and C is 1032.40m. The height of instrument is 1.5m above B with A having an elevation of 146.32m. Considering the effect of curvature and refraction correction.
A transit is set up at point B which is between A and B. The vertical angle observed towards A is known to be -20° and that of C is + 12°. The horizontal distance between A and B is 642.8m and that of B and C is 1032.40m. The height of instrument is 1.5m above B with A having an elevation of 146.32m. Considering the effect of curvature and refraction correction.
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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A transit is set up at point B which is between A and B. The vertical angle
observed towards A is known to be -20° and that of C is + 12°. The horizontal distance between A and B is 642.8m and that of B and C is 1032.40m. The height of instrument is 1.5m above B with A having an elevation of 146.32m. Considering the effect of curvature and refraction correction.
a. Compute the difference in elevation between A and B.
b. Compute the difference in elevation between A and C.
c. Compute the elevation of B.
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