Question Paper: Surveying - 1 : Question Paper May 2014 - Civil Engineering (Semester 3) | Mumbai University (MU)
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## Surveying - 1 - May 2014

### 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 five

1 (a) Explain Reciprocal Ranging.(4 marks) 1 (b) What is offset? Explain types along with limiting length of offset.(4 marks) 1 (c) Characteristics of contour.(4 marks) 1 (d) Explain with neat sketch Dip and Declination.(4 marks) 1 (e) Compare 'Prismatic compass and Surveyor's compass.(4 marks) 1 (f) Horizontal angle measurement by Reiteration method using Theodolite.(4 marks) 2 (a) The following offsets were taken from a chain line to a Hedge:

<colgroup width="85"> </colgroup> <colgroup width="106"> </colgroup> <colgroup span="10" width="85"> </colgroup>
 Distance in “m” 0 20 40 60 80 120 160 200 240 270 300 Offsets in “m” 24 20 16 12 8 10 14 16 20 22 26

Calculate the area enclosed by chain line, the hedge and. the end offset by
i) Simpson's Rule
ii) Trapezosdal Rule.(10 marks) 2 (b) Explain why zero is marked at South in Prismatic compass ? and why East and West are interchanged in surveyor's compass.(6 marks) 2 (c) Describe temperory adjustments of compass.(4 marks) 3 (a) The following bearings were observed an open traverse, correct them where necessary for local attraction :
<colgroup width="85"> </colgroup> <colgroup width="106"> </colgroup> <colgroup span="3" width="85"> </colgroup>
 Line AB BC CD DE F.B. 154° 205° 40' 140° 69° 38' B.B. 334° 40' 23° 38' 321° 22' 249° 38'
(8 marks)
3 (b) Explain Block contouring in detail.(6 marks) 3 (c) Describe principle of surveying with an example.(6 marks) 4 (a) The following notes refer to the reciprocal levels:
<colgroup width="85"> </colgroup> <colgroup width="106"> </colgroup> <colgroup span="2" width="85"> </colgroup>
 Instrument Station Staff reading on Remarks A B A 1.029 1.634 Distance between A and B=800m. B 0.943 1.542 Rt. of A=421.543m.

Find:- i) The true RL of B, ii) Combined corrections for curvature and refraction. Iii) The error collimation adjustment of the instrument.
(8 marks)
4 (b) Explain Orientation alongwith different methods of orientation in plane table surveying.(8 marks) 4 (c) Define
i) Arbitrary meridian.
ii) True merdian
iii) Permanent BM
iv) Line of Collimation.
(4 marks)
5 (a) Determine the elevations of hilltop; from following data;
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 Instrument Station Staff reading On B.M. Vertical angleon target at hilltop RL of BM (m) O1 1.670 28° 42' 345.58 O2 2.55 18° 6' 345.58

The height of target A was 5.0m. The instrument stations were 100m apart and were in line with the target A.
(6 marks)
5 (b) Given the following latitude and departures of the sides of traverse ABCDE,the length of CD have been omitted. Compute the length of CD for above closed traverse. Draw traverse:
<colgroup width="85"> </colgroup> <colgroup width="106"> </colgroup> <colgroup span="4" width="85"> </colgroup>
 Sr No Line Length Bearing Latitude Departure 1 AB 217.5 S 59° 45'E -109.578 +187.872 2 BC 308 Due North ? ? 3 CD ? N 37° 36'W ? ? 4 DE 283.5 S 55° 18'W -161.397 -233.07 5 EA 173.15 S 2° 40'W -172.989 -8.055
(10 marks)
5 (c) Compare collimation method and rise and fall method.(4 marks)

### Attempt any four

6 (a) Balancing BS and FS.(5 marks) 6 (b) Zero circle.(5 marks) 6 (c) Spire test.(5 marks) 6 (d) Traversing method of plane table survey.(5 marks) 6 (e) Balancing of traverse.(5 marks)