A tacheometer is placed at a station A and readings on a staff held vertical upon a B.M. of RL =100.0 meter and at station B are 0.640, 2.200, 3.760 and 0.010, 2.120, 4.230 m respectively. The angle of depression of the telescope in the first case is 6° 19'and in the second case is 7° 42'. Find the horizontal distance from A to B and the RL of station B if the instrument has constants 100 and 0.5.

A tacheometer is placed at a station A and readings on a staff held vertical upon a B.M. of RL =100.0 meter and at station B are 0.640, 2.200, 3.760 and 0.010, 2.120, 4.230 m respectively. The angle of depression of the telescope in the first case is 6° 19'and in the second case is 7° 42'. Find the horizontal distance from A to B and the RL of station B if the instrument has constants 100 and 0.5.

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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A tacheometer is setup at station A and the staff is held vertical at a point B. The telescope inclined at an angle of depression 10° to the horizontal, the readings on the staff are 2.680, 1.825, 1.000m. If the height of instrument (H! ) is 1.40m and R.L. of station A is 360.8 m, then the R.L. of point B is cm. [Take multiplying and additive constant of the instrument to be 100 and 1 respectively]
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A tacheometer is setup at A and the readings on the staff at B are 1.77m, 2.12m, 2.34m and the inclination of line of sight is + 1° 9ꞌ48". Calculate the horizontal distance between A and B. Take k = 100, c = 0.3?
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