Three hills A, B, and C are at elevations 135m, 146m, and 154m respectively above sea level. Distance AB is 3.9km while distance BC is 3.1km. a) Find the effect of curvature and refraction between A and B. b) Determine the effect of curvature and refraction between A and B. c) What would be the height of tower to be constructed at hill C so that the line of sight will clear hill B by 2.5m considering the effect of earth's curvature and refraction?

Three hills A, B, and C are at elevations 135m, 146m, and 154m respectively above sea level. Distance AB is 3.9km while distance BC is 3.1km. a) Find the effect of curvature and refraction between A and B. b) Determine the effect of curvature and refraction between A and B. c) What would be the height of tower to be constructed at hill C so that the line of sight will clear hill B by 2.5m considering the effect of earth's curvature and refraction?

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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subject : fundamentals of surveying
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Subject - Surveying
situation 1] From an instrument set up at point A, the angle of elevation of point B is +16 81' while point C is +7°41'. Furthermore, it was found out that the difference in elevation between points B and C considđering the effect of earth's curvature and refraction is 11..983 m. Point A is in between B and C. If c is 1951 meters from A. how far is B from A? If the elevation of point A is 1905.342 m above mean sea level, what is the elevation of B? : What is the elevation of C? ii. iii.
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