A is a point having an elevation of 130.48 m above datum, and b and C are points of unknown elevation, B is in between A and C. By means of an instrument set 1.22 m above B, vertical angles are observed, that to A being -14°45' and that to C being +8°32'. The horizontal distance AB is 547.20 and the horizontal distance BC is 923.25 m. Making due allowance for earth's curvature and atmospheric refraction. a) Compute the difference in elevation between A and B. b) Determine the difference in elevation between B and C. c) Determine the elevation of C.

A is a point having an elevation of 130.48 m above datum, and b and C are points of unknown elevation, B is in between A and C. By means of an instrument set 1.22 m above B, vertical angles are observed, that to A being -14°45' and that to C being +8°32'. The horizontal distance AB is 547.20 and the horizontal distance BC is 923.25 m. Making due allowance for earth's curvature and atmospheric refraction. a) Compute the difference in elevation between A and B. b) Determine the difference in elevation between B and C. c) Determine the elevation of C.

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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Let A be a point of elevation 130.48 m above datum, and let B and C be points of unknown elevation. By means of an instrument set 1.22 m above B, vertical angles are observed, that to A being -14°45’ and that to C being +8°32’. If horizontal distance AB is 547.20 m and the horizontal distance BC is 923.95 m, a) determine the elevations of B and C, making due allowance for earth’s curvature and atmospheric refraction.
A is a point having an elevation of 130.48 m above datum, and B and C are points of unknown elevation. B is in between A and C. By means of an instrument set 1.22 m above B vertical angles are observed that to A being 14o45’ and that to C being +8.32’. The horizontal distance AB is 547.20 and the horizontal distance BC is 923.25 m. Making due allowance for earth’s curvature and atmospheric refraction. Compute the elevation (meters) of C. NEED ANSWER IN 10 MINS. ASAP
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