The following tacheometric observations were made from Station A to Station 1 and 2. INSTRUMENT STAFF AT ZENITH ANGLE STAFF READING AT STATION UPPER MIDDLE LOWER 1.388 1.665 A 1 96°55' 0.899 0.409 2 122°18' 1.350 1.032 The height of of the instrument above the ground was 1.52m. Take stadia interval factor and constant as 100 and 0, respectively. If the staff was inclined by 1° to the vertical, solve for the following a. Error in horizontal and vertical distances if the staff is inclined towards the instrument for the line A-1.

Structural Analysis
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Author:KASSIMALI, Aslam.
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Chapter2: Loads On Structures
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The following tacheometric observations were made from Station A to Station 1 and 2.
INSTRUMENT
STAFF AT
ΖENITH ANGE
STAFF READING
AT STATION
UPPER
MIDDLE
LOWER
96°55'
122°18'
A
1
1.388
0.899
0.409
1.665
1.350
1.032
The height of of the instrument above the ground was 1.52m. Take stadia interval factor and
constant as 100 and 0, respectively. If the staff was inclined by 1° to the vertical, solve for the
following
a. Error in horizontal and vertical distances if the staff is inclined towards the instrument for
the line A-1.
b. Error in horizontal and vertical distances if the staff is inclined towards the instrument for
the line A-2.
c. Ifthe elevation of point 1 is 115.673m, determine the correct elevation of point B.
Transcribed Image Text:The following tacheometric observations were made from Station A to Station 1 and 2. INSTRUMENT STAFF AT ΖENITH ANGE STAFF READING AT STATION UPPER MIDDLE LOWER 96°55' 122°18' A 1 1.388 0.899 0.409 1.665 1.350 1.032 The height of of the instrument above the ground was 1.52m. Take stadia interval factor and constant as 100 and 0, respectively. If the staff was inclined by 1° to the vertical, solve for the following a. Error in horizontal and vertical distances if the staff is inclined towards the instrument for the line A-1. b. Error in horizontal and vertical distances if the staff is inclined towards the instrument for the line A-2. c. Ifthe elevation of point 1 is 115.673m, determine the correct elevation of point B.
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