Refer to the following notes for reciprocal levelling taken with simple level. Determine (a) the true R.L. of B (b) Collimation correction (c) Refraction correction (d) Combined correction Instrument Station A B Staff reading on A 1.305 1.355 B 2.725 2.050 Remarks Dist. AB 905 m R.L of A= 100 m collimation error -0.003/150

Structural Analysis
6th Edition
ISBN:9781337630931
Author:KASSIMALI, Aslam.
Publisher:KASSIMALI, Aslam.
Chapter7: Deflections Of Trusses, Beams, And Frames: Work-energy Methods
Section: Chapter Questions
Problem 30P
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*Refer to the following notes
for reciprocal levelling taken with simple level.
Determine
(a) the true R.L. of B
(b) Collimation correction
(c) Refraction correction
(d) Combined correction
Instrument
Station
A
B
Staff reading on
A
B
1.305
2.725
1.355
2.050
Remarks
Dist. AB = 905 m
R.L of A = 100 m
collimation
error -0.003/150
Transcribed Image Text:*Refer to the following notes for reciprocal levelling taken with simple level. Determine (a) the true R.L. of B (b) Collimation correction (c) Refraction correction (d) Combined correction Instrument Station A B Staff reading on A B 1.305 2.725 1.355 2.050 Remarks Dist. AB = 905 m R.L of A = 100 m collimation error -0.003/150
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