Question Paper: Surveying - 1 : Question Paper Dec 2015 - Civil Engineering (Semester 3) | Mumbai University (MU)
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## Surveying - 1 - Dec 2015

### Civil Engineering (Semester 3)

TOTAL MARKS: 80
TOTAL TIME: 3 HOURS
(1) Question 1 is compulsory.
(2) Attempt any three from the remaining questions.
(3) Assume data if required.
(4) Figures to the right indicate full marks.

### Attempt any four:

1 (a) Explain the principle of surveying.(5 marks) 1 (b) Differentiate between surveyors and prismatic compass.(5 marks) 1 (c) Explain temporary adjustments of dumpy level.(5 marks) 1 (d) Enlist the advantages and disadvantages of plane table surveying.(5 marks) 1 (e) Procedure for direct measurement of horizontal angle using theodolite.(5 marks) 2 (a) What is bearing of a line? Explain different types of bearings.(4 marks) 2 (b) Explain the methods of adjusting and testing the chain.(8 marks) 2 (c) The following bearings was taken while conducting a close traverse with a compass in a place there local attraction was suspected. At what stations do you suspect local attraction? Find the corrected bearings for local attraction and for declination of 1°30'w

 Line FB BB AB 80°45' 260°00' BC 130°30' 311°35' CD 240°15' 60°15' DA 290°30' 110°10'
(8 marks) 3 (a) Explain Differential levelling & reciprocal levelling.(10 marks) 3 (b) The following consecutive readings were taken with a level and 4.0m Staff on a continuously sloping ground at a common interval of 30 mt 0.780, 1.535, 1.955, 2.430, 2.985, 3.480, 1.155, 1.960, 2.365, 3.640, 0.935, 1.045, 1.630 and 2.545.
The RL of first point A was 180.75 m. Rule out a page of level book & enter above readings. Calculate the RL of all the points by Rise & Fall Method. Also calculate the gradient of the line joining the first & last point.
(10 marks)
4 (a) What is contour? Explain the different characteristics of contour also explain different methods of interpolating contours along with suitability of each one of them.(7 marks) 4 (b) The length of tracing arm of a planimeter is 15.92 cm. The distance from the hinge to the anchor point is 16.0 cm. The diameter of the rim of the wheel is 2 cm. The wheel is placed outside at a distance of 3.0 cm from the hinge. Calculate area corresponding to revolution of the wheel and the area of zero circle.(7 marks) 4 (c) The following perpendicular offsets were taken from a chain line to an irregular boundary. Calculate the area using Trapezoidal and Simpson's rule.
 Chainage (m) 0 30 60 90 120 150 180 210 offsets (m) 0 2.65 3.8 3.75 4.65 3.6 5 5.18
(6 marks)
5 (a) In a four-sided closed traverse ABCDA, the following information is given.
Fill in the missing data.
 Side Length (mt) Deflection angle Bearing Co-ordinates AB 160 ? S40° ? BC 340 116(L) ? 26500 S Point B 22400 W CD 210 60°(L) ? DA ? ? ? ?
(12 marks)
5 (b) Explain is detail the procedure for solving two-point problem on field of plane table surveying.(8 marks)

### Explain any four:-

6 (a) Gales table(5 marks) 6 (b) Local attraction and its eliminations.(5 marks) 6 (c) Method of calculation of earthwork by spot level.(5 marks) 6 (d) Errors in chaining(5 marks) 6 (e) Ranging and its methods.(5 marks) 6 (f) Measurement of deflection angle between two point using theodolite.(5 marks)