If the rod reading taken at 1 is 2.735 m, the elevation of 2 is 225.395 m, the difference in elevation between stations 1 and 2 is 25.650m and the difference in elevation between the instrument station and station 2 is 33.642m, A theodolite was set-up at point Pand stations 1 and 2 were sighted. The following are the observeddata:Point ObservedAzimuthVertical AngleIntercept+25°40'+13°35'1230°35'1.565 m2103°10'1.350 mIf the rod reading taken at 1 is 2.735 m, the elevation of 2 is 225.395 m, the difference in elevationbetween stations 1 and 2 is 25.650m and the difference in elevation between the instrumentstation and station 2 is 33.642m, determine the following:a. Height of the instrument.b. Horizontal distance between stations 1and 2.

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If the rod reading taken at 1 is 2.735 m, the elevation of 2 is 225.395 m, the difference in elevation between stations 1 and 2 is 25.650m and the difference in elevation between the instrument station and station 2 is 33.642m,

If the rod reading taken at 1 is 2.735 m, the elevation of 2 is 225.395 m, the difference in elevation between stations 1 and 2 is 25.650m and the difference in elevation between the instrument station and station 2 is 33.642m,

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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Photogrammetry

Photogrammetry is a technology of taking measurements of physical objects present in the environment, using photographs. It includes the process of recording and analyzing a three-dimension image in the two-dimension form. Photogrammetry was invented around 150 years ago in 1851 by Aimé Laussedat, he was also known as the father of photogrammetry, but this method was not in use until 50 years after its invention. This method was first used in Germany by Dr. Albrecht Meydenbauer in 1893 who was the director of the Royal Prussian Photogrammetric institute founded by him.

Question

A theodolite was set-up at point Pand stations 1 and 2 were sighted. The following are the observed
data:
Point Observed
Azimuth
Vertical Angle
Intercept
+25°40'
+13°35'
1
230°35'
1.565 m
2
103°10'
1.350 m
If the rod reading taken at 1 is 2.735 m, the elevation of 2 is 225.395 m, the difference in elevation
between stations 1 and 2 is 25.650m and the difference in elevation between the instrument
station and station 2 is 33.642m, determine the following:
a. Height of the instrument.
b. Horizontal distance between stations 1and 2.

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