B.Tech II Year I Semester Examinations, November - 2022

SURVEYING

(Civil Engineering)

Time: 3 hours Max. Marks: 70

Note: 1. Question paper consists of three parts A, B and C.

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Note: 2. Answer all questions from Part A, any four questions from Part B and any one question from Part C.

PART A (22 Marks)

1. a) What is the object of surveying? (2M)

b) What is the principle of surveying? (2M)

c) Define local attraction. (2M)

d) What are the uses of contour maps? (2M)

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e) Differentiate between line of collimation and axis of the telescope. (3M)

f) What are the fundamental lines of a transit theodolite? (3M)

g) What is meant by sounding? (3M)

h) List out the various methods of determining areas. (5M)

PART B (28 Marks)

2. Explain in detail about the classification of surveying. (7M)

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3. The following bearings were observed while traversing with a compass:

At what stations is local attraction suspected? Find the correct bearings of the lines. (7M)

4. The following consecutive readings were taken with a level and a 4 m levelling staff on continuously sloping ground at a common interval of 30 m.

0.855, 1.545, 2.335, 3.115, 3.825, 0.465, 1.705, 2.855, 3.685, 0.635, 1.475, 2.235

The Reduced Level (RL) of the first point was 100.000 m. Calculate the Reduced Levels of all the points. (7M)

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5. Explain the procedure for measuring horizontal angles using transit theodolite by repetition method. (7M)

6. How do you determine the height of an inaccessible object when the instrument stations are in the same vertical plane as the elevated object? (7M)

7. What are the different methods of locating details using plane table surveying? Explain them in detail. (7M)

PART C (20 Marks)

8. a) What is meant by contouring? Explain the characteristics of contours. (10M)

b) The area of a plan of an old survey plotted to a scale of 10 m to 1 cm measures 100.2 cm². Plan has shrunk so that a line originally 10 cm long now measures 9.6 cm. Find:

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i) Shrunk scale. (5M)

ii) True area of the survey. (5M)

9. a) Explain the procedure for temporary adjustment of transit theodolite. (10M)

b) Derive the expressions for horizontal distance and vertical distance when staff held vertically and the line of sight inclined and instrument axis is inclined. (10M)

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