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# Cochin University of Science and Techology (CUST) 2001 B.Tech Civil Engineering Surveying I - Question Paper

Saturday, 25 May 2013 11:15Web

DC    (b)

Calculate the deflection angle from the following observa

tion.    /

Line

AB

BC

CD

DE

Bearing N45y6o'E N60*45'E S 85 50' E S/*030'W

X

(a)

(b)

constants.

Differentiate between Stadia tacheometry and tangential tacheometry.

j

Explain the method to calcinate the Tacheometric

OR

(c) What is the use of a subtense bar?

1

 ***

B.Tech. Degree III Semester (Lateral Entry) Examination, April 2003

CE 302 SURVEYING - I

Maximum Marks: 100 (All questions carry EQUAL marks)

Time: 3 Hours

L (a)

(b)

(c)

H (a) (b)

(c)

ffl. (a)

What are the basic principles of surveying?

Explain indirect ranging.

The plan of an old survey plotted to a scale of 50m to 1cm was found to have shrunk so that a line originally 20cm long was 19.6cm. There was also a note on the plan that the 20m chain used was 0.1m too long. If the area of the plan measured now by a planimeter is 150.28cm2, find the true area of the survey. OR

Differentiate between plane surveying and Geodetic surveying. What are the basic characteristics of each?

What is meant by scale of a map? What are the recommended scales for -

0) Building surveys

(ii) Route surveys and (in) Land surveys?

A surveyor measured the distance between two points on a plan and computed the length as 500m by adopting a scale of lcm=40m. Later it was found that the correct scale of the plan was lcm = 50m. Find the true distance between the points.

Differentiate between -

(i)    true bearing and magnetic bearing;

(ii)    whole circle bearing and quadrantal bearing.    /

The following bearings were observed in a traverse survey conducted with a prismatic compass at a place where local attraction was suspected:

 Line FB BB AB 124*30' 304*30' BC 6815' 246*00' CD 31Q'3& 135*15' DE 20015' 17*45'

Which are the stations affected by local attraction?.

Find the corrected bearings of the lines also.

OR

What is a Telescopic alidade? When is it used?

List the various methods used for orienting the plane table and explain any one in detail.

What is meant by three-point problem in plane table surveying? Explain the method of solving it.

Define the terms:

CO    Line of collimation

(ii)    Height of instrument

(iii)    Level surface

(iv)    Rise and fall.

What are the temporary adjustment of levelling? Explain.

(c) The following staff readings were taken using a dumpy levei. The instrument was shifted after 1* T*_snd IffiL readings. RX. of the starting bench mark isitfLQQQ. Enter the readings in the form of a level book page; reduce the levels byrreeancJ" fall method and apply the usual checks.

\ ,

1.525,2.200,3.120,200,370,1.230,2/765,2.850,3260, 3,225,1-84*0,2.910.

\ OR

VL (a) Explain the terms (i) contour (ii) contour interval and

(b)    Describe the merits and demerits of different methods of locating contours.

(c)    Explain clearly with diagrams the characteristics of contours.

VDL (a) What is Trapezoidal rule? Derive an equation for the same.

(b) A series of offsets were taken at 10m intervals in the following order for a chain line to a curved boundary 0, 6.2,4.8, 5.6, 6.5,

7.3, 8.5, 0 m. Fuid the area between the chain line, the curved boundary and the offsets by trapezoidal rule.

OR

VIIL    Write short notes on:

0) Clinometer

(ii)    Ceylon Ghat tracer

(iii)    Box sextant

DC (a) What are the temporary and permanent adjustments of Theodolite? Explain.

Contd.