A trigonometric leveling method was used to measure elevation between different stations. The transit is set at station B which is between stations A and C. The vertical angle observed towards station A is -13 36'52" while at station C is -10 15'19". The horizontal distance between A and B is 1899.72m and from B to C is 2532.41m. The height of instrument is 1.5m above B and the elevation of station A is 241.56m. Considering the effect of curvature and refraction correction, compute the elevation of each station and the difference in their elevation.
A trigonometric leveling method was used to measure elevation between different stations. The transit is set at station B which is between stations A and C. The vertical angle observed towards station A is -13 36'52" while at station C is -10 15'19". The horizontal distance between A and B is 1899.72m and from B to C is 2532.41m. The height of instrument is 1.5m above B and the elevation of station A is 241.56m. Considering the effect of curvature and refraction correction, compute the elevation of each station and the difference in their elevation.
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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ANSWER KEY:
Elev Sta. B= 700.3994m
Elev Sta. C= 243.2945m
∆hAB= 458.8394m
∆hBC= 457.1049m
∆hCA =1.7345m
these are the exact answer, please show the right solution. Thankyou :)
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