The top of a mast signal 2000m away was sighted through a transit with recorded vertical angle of 4 deg. 10 min. the height of the mast is 6m and the HI of the transit above the point where it is set is 1.2m. The elevation of the base of the signal B is 171.17m. Compute the elevation of the point under the transit A with due allowance for curvature and refraction correction.
The top of a mast signal 2000m away was sighted through a transit with recorded vertical angle of 4 deg. 10 min. the height of the mast is 6m and the HI of the transit above the point where it is set is 1.2m. The elevation of the base of the signal B is 171.17m. Compute the elevation of the point under the transit A with due allowance for curvature and refraction correction.
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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The top of a mast signal 2000m away was sighted through a transit with recorded vertical angle of 4 deg. 10 min. the height of the mast is 6m and the HI of the transit above the point where it is set is 1.2m. The elevation of the base of the signal B is 171.17m. Compute the elevation of the point under the transit A with due allowance for curvature and refraction correction.
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