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
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.
Fill in the missing data.
|Side||Length (mt)||Deflection angle||Bearing||Co-ordinates|
|BC||340||116(L)||?||26500 S Point B 22400 W|
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)