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]

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]

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 levelling staff is held vertical at distance of 100 mm and 300 mm from the axis of a tacheometer and the staff intercept for the horizontal sight are 0.99 m and 3.00 m respectively. Find the constant of the instrument. The instrument set up at station A and the staff held vertical at point B. With the telescope inclined at a depression angle 10° to horizontal the reading on the staff are 2.670, 1.835, 1.0 m. Calculate the RC of B and its horizontal distance from A. (Given that HI = 1.42 m, and RL of A = 450.5 m)
Subject - Surveying
Traverse surveys....
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