# GTU previous years question papers -BE- Sem-III -Surveying -Dec 2010

GTU previous years question papers

GUJARAT TECHNOLOGICAL UNIVERSITY

B.E. Sem-III Regular / Remedial Examination December 2010

Subject code: 130601

Subject Name: Surveying

Instructions:

1. Attempt all questions.

2. Make suitable assumptions wherever necessary.

3. Figures to the right indicate full marks.

(b) Define latitude and departure. Differentiate between the consecutive and

independent coordinates

(c) Define the following in reference to the theodolite:

1. Transiting 2. Axis of level tube 3. Telescope normal 4. Changing Face

Q.2 (a) Following readings were taken for a closed traverse ABCDE, find out

the missing quantities

Line Length Bearing

AB 194.1 85° 30’

BC 201.2 15° 00’

CD 165.4 285° 30’

DE 172.6 185° 30’

EA ? ?

(b) What is meant by balancing a traverse? State the various rules used to do this

(c) Explain the repetition method to measure horizontal angles and how

OR

(c) Explain the basic procedure, instruments and materials required to set out the foundation of a building on the ground as per the plan

Q.3 (a) A theodolite was set up at a distance of 150 m from tower. The angle of

elevation to the top of the parapet was 10° 8’ while the angle of

depression to the foot of the wall was 3° 12’. The staff reading on the

B.M of RL 50.217 with the telescope horizontal was 0.880. Find the

height of the tower and the RL of the top of the parapet

(b) Enlist different methods of plane table survey. Explain any one with neat sketch

(c) Describe briefly how soundings are located by (a) two angles from the shore. (b) intersecting ranges

OR

Q.3 (a) In setting up the plane table at a station A, it was found that the point ‘a’,

representing the station A on the plan was not exactly above the

corresponding station A on the ground. If the displacement of point ‘a’

in the direction at right angles to a ray to P(AP) was 30 cm, find the

consequent displacement of p from its true position given the following

1. Scale of the plan 1cm=150m , distance AP= 2000 m

2. Scale of the plan RF=1/600, distance AP=40 m

(b) Describe with neat sketch, the method of intersection use for plane table

survey. When it is used?

(c) Explain the objectives of hydrographic surveying. Define sounding.

Enlist the equipments required for sounding

Q.4 (a) A road embankment is 8 m wide and 200 m in length at the formation

level, with a side slope of 1.5:1. The embankment has a rising gradient

of 1 in 100 m. The ground levels at every 50 m along the centre line are

as follows:

Distance(m) 0 50 100 150 200

R.L. (m) 164.5 165.2 166.8 167 167.2

The formation level of zero chainage is 166 m. Calculate the volume of earth work

(b) What is the use of planimeter? What is the zero circle? Under what

condition does the zero circle get traced by the tracing point? How you

can find the area of zero circle?

(c) What are the different methods of designation of a curve? Derive a

relationship between the radius and the degree of curve.

OR

Q.4 (a) The latitudes and departures of the lines of a closed traverse are given

below. Calculate the area of traverse.

Line Northing Southing Easting Westing

AB 157.2 154.8

BC 210.5 52.5

CD 175.4 98.3

DA 228.7 109. 0

(b) Discuss in brief the various methods of measurement of area by offsets

from the baseline. State the relative merits and demerits of each methods

(c) How would you find out whether the vertical curve will have convexity

upwards or downwards if the gradients on the two sides of the apex are given? What is rate of change of gradient?

Q.5 (a) Describe the method of setting a circular curve by the method of offsets from the long chord.

(b) What is a transition curve? Why and where it is provided? 04

(c) Two tangents intersect at a chainage of 1400 m the deflection angle

being 24°. Calculate the following quantities for setting out a curve of

1. Tangent length 2. Length of long chord 3. Length of curve

4. Chainage of point of commencement and tangency 5. Apex distance

OR

Q.5 (a) Discuss the method of setting out a circular curve with two theodolite.