Question

the tacheometer was set up at a station A and the readings on a vwrtically held staff at B were 2.255, 2.605, and 2.955, the line of sight being at a inclination of + 8" 24'. Another observation on the vertically held staff at B.M gave the readings 1.640, 1.920 and 2.200 the inclunation of the line if sight being + 1" 6'. calculate the horizontal distance between A and B the elevation of if the R.L of B.M. is 418.685m. The constant of the instruments were 100 and 0.3​

Answer 1

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Answer 2

Concept Introduction: Tachometer is used to record the speed of a rotating body.

Explanation:

We have been Given: the tacheometer was set up at a station A and the readings on a vwrtically held staff at B were 2.255, 2.605, and 2.955, the line of sight being at a inclination of + 8" 24'. Another observation on the vertically held staff at B.M gave the readings 1.640, 1.920 and 2.200 the inclunation of the line if sight being + 1" 6'.

We have to Find: calculate the horizontal distance between A and B the elevation of if the R.L of B.M. is 418.685m. The constant of the instruments were 100 and 0.3.

the tacheometer was set up at a station A and the readings on a vwrtically held staff at B were 2.255, 2.605, and 2.955, the line of sight being at a inclination of + 8" 24'. Another observation on the vertically held staff at B.M gave the readings 1.640, 1.920 and 2.200 the inclunation of the line if sight being + 1" 6'.

Final Answer: the tacheometer was set up at a station A and the readings on a vwrtically held staff at B were 2.255, 2.605, and 2.955, the line of sight being at a inclination of + 8" 24'. Another observation on the vertically held staff at B.M gave the readings 1.640, 1.920 and 2.200 the inclunation of the line if sight being + 1" 6'.

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