Question Paper: Surveying 1 Question Paper - Jun 17 - Civil Engineering (Semester 3) - Mumbai University (MU)

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## Surveying 1 - Jun 17

### Civil Engineering (Semester 3)

Total marks: 80

Total time: 3 Hours
INSTRUCTIONS

(1) Question No. is compulsory.

(2) Attempt any three from the remaining five questions.

(3) Draw neat diagrams wherever necessary

Q1) Compare the following:

**(i)**Chain Survey and Compass survey.

**(ii)**Trapezoidal rule and Prismoidal rule.

**(iii)**Surveyor's compass and Prismatic compass.

**(iv)**Rise and fall method and Plane of collimation method.

**2(a)**The following notes refer to the reciprocal levelling:

Find:

- (i) The true R.L. of B
- (ii) Combined corrections for curvature and refraction and Error in collimation adjustment of the instrument.

**2(b)**Write a detailed note on obstacles in chain surveying.

**2(c)**A line was measured with steel tape which was exactly 30m at a pull of 5kg and measured length was 229.62m. The pull applied during measurement was 10kg and the tape was uniformly supported. Find the true length of line if the cross-sectional area of tape was $0.02cm^2$ and modulus of elasticity of tape material = $2.1 X 10^6 kg/cm^2$

**3(a)**Compare closed traverse and open traverse.

**3(b)**Compare well-conditioned and ill conditioned triangle.

**3(c)**What is a local attraction? Which are the methods of elimination of local attraction?

**3(d)**Describe advantages and disadvantages of plane table survey.

**4(a)**Calculate the included angles for the closed compass traverse ABCDA run clockwise from following data:

Line | AB | BC | CD | DA |
---|---|---|---|---|

FB | $40^0$ | $70^0$ | $210^0$ | $280^0$ |

**4(b)**Calculate the missing quantities for a theodolite survey of closed traverse ABCDA:

Line | AB | BC | CD | DA |
---|---|---|---|---|

Length in m | 550 | 1200 | 880 | 1050 |

Azimuth | 60$^o$ | ? | ? | 310$^o$ |

**5(a)**Calculate the volume of earth removed for a piece of borrow pit shown. At the corners, the data mentioned is amount of cut in meters. Each square is 9m*9m.

**5(b)**Describe in detail procedure of taking bearing of a line with theodolite.

**5(c)**Explain in detail the use of theodolite as a level.

**6(a)**Define contour. Explain the methods of interpolation of contours.

**6(b)**Describe the working of Amsler's planimeter.

**6(c)**Explain how the project of theodolite traversing is executed?