Elementary Surveying: An Introduction To Geomatics (15th Edition)
15th Edition
ISBN: 9780134604657
Author: Charles D. Ghilani
Publisher: PEARSON
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Chapter 4, Problem 4.34P
Similm to Problem 4.32 Eexcept that the rod readings are 1.894 and 1.923 m to A and B, respeativelyl from point 1, and 1.1333 and 11130 m to A and [El1 respectively, from point 2. The distance between the points in the West was 10!] m.
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Question: 1
To determine the elevation of station A, the following observation were taken, the rod held vertically. The instrument fitted with Anallatic lens and value of constant was 100.
Inst. Station
Height of instrument
Staff Station
Vertical angle
Staff Reading
Remarks
O
1.440
B.M
- 5o40’
1.332 1.896 2.460
R.L of BM = 158.205 m
B
1.440
C.P
+8o 20’
0.780 1.263 1.746
A
1.380
C.P
-6o 24’
1.158 1.617 2.076
subject: Engneering surveyin 1
Two pegs A and B are driven in the ground at a distance of abour 120 m. A dumpy level is set up at station Q exactly mid-way between pegs A and B. The staff readings on peg A and B were found to be 3.513 m and 3.149 m. The instrument was then moved and set up at a point P beyond peg A, in line BA produced at a distance of 20 m from A. The staff readings on pegs A and B were 1.763 m and 0.847 m respectively. What is the true difference in elevation between the two points? With the level in the same position at P what rod readings on B should the line of sight is adjusted. Check these reading against the true difference in elevation previously
SOLVE THE FOLLOWING PROBLEMS:
Problem
Sketch
Solution
Answer
Two pegs A and B are driven in the ground at a distance of abour 120 m. A dumpy level is set up
at station Q exactly mid-way between pegs A and B. The staff readings on peg A and B were found
to be 3.513 m and 3.149 m. The instrument was then moved and set up at a point P beyond peg
A, in line BA produced at a distance of 20 m from A. The staff readings on pegs A and B were 1.763
m and 0.847 m respectively. What is the true difference in elevation between the two points?
With the level in the same position at P what rod readings on B should the line of sight is adjusted.
Check these reading against the true difference in elevation previously determined.
a. Sketch
b. Solution
C. Answer
Chapter 4 Solutions
Elementary Surveying: An Introduction To Geomatics (15th Edition)
Ch. 4 - Prob. 4.1PCh. 4 - Prob. 4.2PCh. 4 - Prob. 4.3PCh. 4 - Prob. 4.4PCh. 4 - Prob. 4.5PCh. 4 - Prob. 4.6PCh. 4 - Prob. 4.7PCh. 4 - Prob. 4.8PCh. 4 - Prob. 4.9PCh. 4 - Prob. 4.10P
Ch. 4 - Prob. 4.11PCh. 4 - Prob. 4.12PCh. 4 - Prob. 4.13PCh. 4 - Prob. 4.14PCh. 4 - Prob. 4.15PCh. 4 - Prob. 4.16PCh. 4 - Prob. 4.17PCh. 4 - Prob. 4.18PCh. 4 - Prob. 4.19PCh. 4 - Prob. 4.20PCh. 4 - Prob. 4.21PCh. 4 - Prob. 4.22PCh. 4 - Prob. 4.23PCh. 4 - Prob. 4.24PCh. 4 - Prob. 4.25PCh. 4 - Prob. 4.26PCh. 4 - Prob. 4.27PCh. 4 - Prob. 4.28PCh. 4 - Prob. 4.29PCh. 4 - Prob. 4.30PCh. 4 - Prob. 4.31PCh. 4 - Prob. 4.32PCh. 4 - Prob. 4.33PCh. 4 - Similm to Problem 4.32 Eexcept that the rod...Ch. 4 - Prob. 4.35P
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