The following data were taken from the peg method of adjustment. Instrument at 1 Instrument at 2 3.7 m Rod rdg. on A Rod rdg. on B 4 m 2 m 1.5 m Point 1 is midway between A and B. Point 2 is 20 m to the left of A, 120 m from B. 1. Determine the magnitude of the true difference in elevation between A and B. 2. Determine the correct rod reading at A for horizontal sight if the instrument is set up at point 2.

Structural Analysis
6th Edition
ISBN:9781337630931
Author:KASSIMALI, Aslam.
Publisher:KASSIMALI, Aslam.
Chapter2: Loads On Structures
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The following data were taken from the peg method of adjustment.
Instrument at 1
Instrument at 2
Rod rdg. on A
4 m
3.7 m
Rod rdg. on B
2 m
1.5 m
Point 1 is midway between A and B. Point 2 is 20 m to the left of A, 120 m from B.
1. Determine the magnitude of the true difference in elevation between A and B.
2. Determine the correct rod reading at A for horizontal sight if the instrument is set up at point 2.
Transcribed Image Text:The following data were taken from the peg method of adjustment. Instrument at 1 Instrument at 2 Rod rdg. on A 4 m 3.7 m Rod rdg. on B 2 m 1.5 m Point 1 is midway between A and B. Point 2 is 20 m to the left of A, 120 m from B. 1. Determine the magnitude of the true difference in elevation between A and B. 2. Determine the correct rod reading at A for horizontal sight if the instrument is set up at point 2.
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