VTU Civil Engineering (Semester 3)
Surveying 1
December 2014
Total marks: --
Total time: --
INSTRUCTIONS
(1) Assume appropriate data and state your reasons
(2) Marks are given to the right of every question
(3) Draw neat diagrams wherever necessary

1 (a) What is surveying? Explain the basic principles of surveying.
8 M
1 (b) Differentiate between plan and map.
2 M
1 (c) Give the broad classification of surveying.
10 M

2 (a) What are the different types of chains and tapes used in surveying?
6 M
2 (b) Explain the method of direct ranging by the use of time ranger with a neat sketch.
6 M
2 (c) The distance between the points measured along a slope is 800m. Find the distance between the point if
i) The angle of slope between the points is 10°
ii) The difference in level between the point is 60 m.
8 M

3 (a) Explain the basic principle of EDM devices.
4 M
3 (b) Explain with a neat sketch, the construction and working of an optical square.
8 M
3 (c) Two stations P and Q, on the main survey line, were taken on the sides of a pond. On the right f PQ, a line PR, 210m long was laid down and another lie PS 260m long was laid down on the left of PQ. The points R, Q and S are on the same straight line. The measured lengths RQ and QS and are 85 m and 75 m, respectively. What is the length of PQ?
8 M

4 (a) Distinguish between:
.i) Magnetic bearing and time bearing.
ii) Whole circle bearing and reduced bearing
ii) Isogonic line and Agonic line.
6 M
4 (b) Differentiate between prismatic compass and surveyor's compass.
6 M
4 (c) The following bearings were observed with a compass. Calculate the interior angles.
 Line AB BC CD DE EA Fore Bearing 60o 30' 122o 0' 46o 0' 205o 30' 300o 0'
8 M

5 (a) What is local attraction? How it detected and eliminated?
4 M
5 (b) A closed compass traverse was conducted round a forest and the following whole circle bearings were observed. Determine which of the stations suffer from local attraction and compute the value of corrected bearing.
 Line Fore bearing Back bearing AB 74o 20' 256o 0' BC 107o 20' 286o 20' CD 224o 50' 44o 50' DA 306o 40' 126o 0'
8 M
5 (c) In the following traverse ABCDE, the length and bearing of EA is omitted, calculate the length and bearing of line EA.
 Line Length (M) Bearing AB 204.0 87o 30' BC 226.0 20o 20' CD 187.0 280o 0' DE 192.0 210o 3' EA ? ?
8 M

6 (a) Define the following terms: i) Backsight
ii) Fore sight
iii) Bench mark
iv) Reduced level
8 M
6 (b) Explain the temporary adjustments of Dumpy level.
4 M
6 (c) The following readings were observed successively with a levelling instrument. The instrument was shifted after 5th and 11th readings. Draw a page of level book and determine the R.L of various points by H I method if the R.I of the 1st point was 264.350 mt. 0.485, 1.020, 1.787, 3.395, 3.875, 0.360, 1.305, 1.785, 2.675, 3.385, 3.885, 1.835, 0.435 and 1.705.
8 M

8 M
7 (b) What is meant by orientation? List the different methods of orientation.
4 M
7 (c) Explain radiation method of plane table surveying with a neat sketch.
8 M

8 (a) Define a contour. List the uses of contour maps.
6 M
8 (b) Explain the characteristics of cotour.
6 M
8 (c) Following observations were taken in reciprocal levelling.
i) Find the reduced level of B (Time RL)
ii) Combined correction for curvature and refraction.
 Instrument Staff reading on Remains A B A 1.545 2.565m Dist. AB=1420m B 0.725m 1.935m RL of A= 108.360 m
8 M

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