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From the top of a cliff (BM) to point A, a rod reading was recorded to be 1.625m. At a point 185.45m away from the foot of the cliff (BM), a vertical angle of 38°45' was read from an Engineer's transit. A backsight of 1.725m was taken at a Bench Mark whose elevation is 50.00m. above mean sea level. What is the vertical distance at point A? What is the Height of the Instrument? Elevation of point A below stadia rod?

From the top of a cliff (BM) to point A, a rod reading was recorded to be 1.625m. At a point 185.45m away from the foot of the cliff (BM), a vertical angle of 38°45' was read from an Engineer's transit. A backsight of 1.725m was taken at a Bench Mark whose elevation is 50.00m. above mean sea level. What is the vertical distance at point A? What is the Height of the Instrument? Elevation of point A below stadia rod?

Structural Analysis
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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From the top of a cliff (BM) to point A, a rod reading was recorded to be 1.625m. At a point 185.45m away from the foot of the cliff (BM), a vertical angle of 38°45' was read from an Engineer's transit. A backsight of 1.725m was taken at a Bench Mark whose elevation is 50.00m. above mean sea level. What is the vertical distance at point A? What is the Height of the Instrument? Elevation of point A below stadia rod?
Transcribed Image Text:From the top of a cliff (BM) to point A, a rod reading was recorded to be 1.625m. At a point 185.45m away from the foot of the cliff (BM), a vertical angle of 38°45' was read from an Engineer's transit. A backsight of 1.725m was taken at a Bench Mark whose elevation is 50.00m. above mean sea level. What is the vertical distance at point A? What is the Height of the Instrument? Elevation of point A below stadia rod?
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