In the two peg-test method of a dumpy level the following observations were taken. Instrument Near A Instrument Near B Rod Reading on A 1. 475 m 0.918 m Rod Reading on B 1. 974 m 1. 254 m Determine the following: A. Difference in elevation between A and B. B. The correct reading on A with the instrument still set-up at B, if the line is not in adjustment. C. Error in the line of sight.

Traffic and Highway Engineering
5th Edition
ISBN:9781305156241
Author:Garber, Nicholas J.
Publisher:Garber, Nicholas J.
Chapter14: Highway Surveys And Location
Section: Chapter Questions
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In the two peg-test method of a dumpy level the following observations were
taken.
Instrument Near A
Instrument Near B
Rod Reading on A
1. 475 m
0. 918 m
Rod Reading on B
1. 974 m
1. 254 m
Determine the following:
A. Difference in elevation between A and B.
B. The correct reading on A with the instrument still set-up at B, if the
line is not in adjustment.
C. Error in the line of sight.
Transcribed Image Text:In the two peg-test method of a dumpy level the following observations were taken. Instrument Near A Instrument Near B Rod Reading on A 1. 475 m 0. 918 m Rod Reading on B 1. 974 m 1. 254 m Determine the following: A. Difference in elevation between A and B. B. The correct reading on A with the instrument still set-up at B, if the line is not in adjustment. C. Error in the line of sight.
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