Two points of a trigonometric leveling A and B of a certain terrain are each distance 2500m. Angles A and B are measured from a third point C located in between that has an elevation of 300m. The measured vertical angles to A is + 5ᵒ30’ and to B is +8ᵒ30’ from point C. a. Considering the earth’s refraction, what is the difference of elevation A and B? b. What is the elevation of point A? c. What is the difference in elevation between B and C?
Two points of a trigonometric leveling A and B of a certain terrain are each distance 2500m. Angles A and B are measured from a third point C located in between that has an elevation of 300m. The measured vertical angles to A is + 5ᵒ30’ and to B is +8ᵒ30’ from point C. a. Considering the earth’s refraction, what is the difference of elevation A and B? b. What is the elevation of point A? c. What is the difference in elevation between B and C?
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Two points of a trigonometric leveling A and B of a certain terrain are each distance 2500m. Angles A and B are measured from a third point C located in between that has an elevation of 300m. The measured vertical angles to A is + 5ᵒ30’ and to B is +8ᵒ30’ from point C.
a. Considering the earth’s refraction, what is the difference of elevation A and B?
b. What is the elevation of point A?
c. What is the difference in elevation between B and C?
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