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 642.80 m and that of B and C is 1032.40 m. The height of instrument is 1.5 m above B with A having an elevation of 146.32 m. 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.

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 642.80 m and that of B and C is 1032.40 m. The height of instrument is 1.5 m above B with A having an elevation of 146.32 m. 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.

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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