Cochin University of Science and Techology (CUST) 2002 B.Tech Civil Engineering Surveying I u - Question Paper

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OR

X a) What is an anallatic lens? How the constant additive factor of a tacheometer can be made zero by using an anallatic lens?    (7)

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b)    Explain the term Tangential Tacheometry.    (5)

c)    Describe the procedure of measuring a horizontal angle by reiteration method.    (8)

BTS-C 024(B)

B. Tech. Degree III Semester Examination January 2002

CE302 SURVEYING-1

Time: 3 Hours    Max. Marks: 100

(Answer all questions)

I    a) Explain the difference between plane and geodetic surveying.

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b) Explain the principles of chain surveying.    (7)

c) The length of a line measured with a 20m chain was found

to be 562 metres. The true length of the line was known to be 560 metres. Find the error in the chain.    (6)

OR

II a) Describe with sketches, the various methods of chaining

on sloping ground stating the advantages of each.    (10)

b) In passing an obstacle in the form of a pond, stations A and D, on the main line, were taken on the opposite sides of the pond. On the left of AX), a line AB. 225m long was laid down, and a second line AC, 275 m long was ranged on the right of AD. The points B, D and C being in the same straight line. BD and DC were then chained and found to be 125m and 137.5m respectively. Find the length of AD.    (10)

HI a) Describe the Bowditch graphical method of distributing

the closing error in a compass traverse.    (8)

(P.T.O)

traverse:
Line	Forebearinp	Backbearing
AB	755	25420
BC	115 20	29635
CD	16535	345 351
1*	22450	44 5
EA	304 50	125 5

At what stations do you suspect the local attraction?

Determine the correct magnetic bearings* If declination

was 51 O E> what are the true bearings?    (12)

OR

IV    a) State the three point problem and explain how it can be

solved by trial and error. How can the trials be made convergent by using Lehmanns rules ?    (10)

b) What are the advantages and disadvantages of plane table

surveying?    (10)

V    a) How do curvature and refraction affect levelling operations? (6)

c)    Reciprocal levels are taken with one level as below:-Level at    Reading on Distance between

*    A B    A and B

A    4.50 6.76 ,    2640m

B    3.15 4.97

Determine (a) the true difference of level between A and B and (b) the coliimation error of the instrument.    (8)

Contd.....3

OR

What are the characteristics of contour? Explain clearly with diagrams.    (10)

Describe various methods of contouring. Discuss the merits and demerits of each.    (10)

Explain the process of calculating area from

(i) latitude & departure (ii) co-ordinates.    (8)

A series of offsets were taken from a chain line to a curved boundary line at intervals of 10m in the following order.

0 , 2.50, 3.55 , 3.40 , 4.65 , 3.60 4.85 ,

5.80 m.

Compute the area between the chain line, the curved boundary line and the end offsets by using Trapezoidal rule and compare the results with the Simpsons rule.    (12)

OR

Write short notes on:

(i) Hand levels (ii) Mass haul curve (ui) Clinometer (iv) Planimeter (v) Eidograph

(20)

Describe the methods of traversing by theodolite and discuss their advantages and disadvantages.    (8)

For a closed traverse ABCDE the length and bearings of the lines are given below:

Line	Lenathfm)	Bearing
AB	362.55	N 33 10 W
BC	218.00	N39 08E
CD	163.22	S 10 20E
DE	195.95	S 66 50 E
EA	278.53	S 3220 W

Compute the latitudes, departures and closing error. Apply Bowditchs correction and compute the adjusted length and bearing of each line.    (12)

Contd.....4

Attachment: cochin-university-of-science-and-techology--cust--2002-b-tech-civil-engineering-36769-1.pdf

Earning:   Approval pending.