Question Paper: Surveying 1 Question Paper - Jun 16 - Civil Engineering (Semester 3) - Mumbai University (MU)
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## Surveying 1 - Jun 16

### 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) Attempt any five.

1(a) Explain fly levelling with its suitability.
(5 marks) 572

1(b) Direct vernier, Retrograde vernier - Explain.
(5 marks) 00

1(c) How will you measure deflection angle of a survey line using theodolite.
(5 marks) 1773

1(d) Difference between Prismatic & surveyor's compass.
(5 marks) 776

1(e) Area of Zero circle.
(5 marks) 757

2(a) Explain how you would setup a plane table at a station.
(4 marks) 751

2(b) The following bearing were observed on a traverse

Line AB BC CD DA
FB $80^0 45'$ $130^0 30'$ $240^0 15'$ $290^0 30'$
BB $260^0 00'$ $311^0 35'$ $60^0 15'$ $110^0 10'$

Make corrections for local attraction and declination of $1^0 30'$ and calculate true fore bearing.

(10 marks) 785

2(c) At the end of survey of a field a 30m chain was found to be 10cm too long. The area of the plan drawn with the measurements taken with its chain is found to be 125 $cm^2$. If the scale of the plan is 1cm = 10m, what is the true area of the filed. Assume that the chain was exact 30m of the commencement of the work.
(6 marks) 771

3(a) The following are the length and bearing in a traverse ABCD

Line AB BC CD
Length 124 168 97
Bearing $32^0$ $168^0$ $44^0$

(10 marks) 783

3(b) How is the closing error of the traverse adjusted graphically.
(6 marks) 00

3(c) How will you use line ranger in the field. Draw a neat sketch.
(4 marks) 763

4(a) It was required to ascetain the elevation of two points P & Q and line of levels was runs from P to Q. The levelling was then continued to a bench mark of 83.500 the reading obtained being as show as below. Obtain RL of P & Q,

BS IS FS RL Remarks
1.622 - - - P
1.874 - 0.354 - -
2.032 - 1.780 - -
- 2.362 - - Q
0.984 - 1.122 - -
1.900 - 2.824 - BM

(10 marks) 566

4(b) Explain interpolation of contours. What are the methods available? Explain any one method in detail.
(6 marks) 756

4(c) Discuss the importance of reconnaissance in surveying.
(4 marks) 00

5(a) Explain Radiation and Intersection method of plane table survey with neat sketch.
(8 marks) 752

5(b) Describe temporary adjustment of theodolite.
(6 marks) 1768

5(c) Explain briefly the instruments used in setting out perpendicular offsets in chain surveying.
(6 marks) 00

6(a) The following notes refer to the reciprocal levels with one level.

Instrument
at
A
B
Remark
Distance between
A 1.150 2.540 A and B = 1250m
B 0.965 2.410 and RL of A = 650.50m

Find (i) True RL of B     (ii) Combined correction for curvature & refraction

(8 marks) 565

6(b) Obstacles in chaining.
(7 marks) 765

6(c) Balancing fore sight and backsight.
(5 marks) 00