Fourth Semester B.E. Degree Examination, June/July 2013Surveying - II

Note: Answer FIVEfull questions, selectingat least TWO questions from each part.

a. Differentiate between:(i) Line of collimation and Trunnian axis(ii) Face left observation and face right observation(iii) Transiting and swinging the telescope(iv) Clamp screw and tangent screw(v) Telescope normal and telescope inverted

b. Explain the methods of prolonging a straight line,adjustment (ii) the instrument is in poor adjustment.

(10 Marks)

when (i) the instrument is in good(10 Marks)

2 a. What are the fundamental axes of a theodolite? State the relationships between them andmention the purposes. (!O Marks)

b. To determine the elevation of the top of the flagstaff. The following observations weremade:Instrument station Reading on BM Angle of elevation Remarks

A 1.266 10° 48' RL ofBM = 248.362mB 1.086 7° 12'Stations A and B and the top of the aerial pole are in the same vertical plane. Find theelevation of the top of the flagstaff if the distance between A and B = 50 m. (10 Marks)

3 a. Explain the objective, necessity and adjustment of making the horizontal axis perpendicularto the vertical axis of a theodolite. (10 Marks)

b. Derive the expression for the horizontal distance, vertical height and elevation of aninaccessible object by double plane method. (10 Marks)

4 a. Write a note on use of anallactic lens and subtense bar in Tacheometry. (10 Marks)

b. A Tacheometry is setup at an intermediate point on a transverse course PQ and the followingobservations are made on a vertically held staff.

Staff station Vertical angle Staff interrupt Axial hair readingP +8° 36' 2.350 2.105Q +6° 6' 2.055 1.895

The instrument is fitted with an anallactic lens and the constant is 100. Compute the lengthat PQ and reduced level ofQ, that ofP being 321.500 mt. (10 Marks)

www.bookspar.com | VTU NOTES | QUESTION PAPERS | NEWS | VTU RESULTS | FORUM | VTU BOOKSPAR APP

www.bookspar.com | VTU NOTES | QUESTION PAPERS | NEWS | VTU RESULTS | FORUM | VTU BOOKSPAR APP

5 a. List the various methods of setting out a simple curve and explain Rankine's diffractionangle method in detail. (10 Marks)

b. Two tangents intersect at chainage 1200 m and the deflection angle being 40 degrees.Calculate the data necessary to set out a simple curve by Rankine's method. The degree ofcurve is 10° and 20 mt chain is used. (10 Marks)

6 a. Two straights with a total deflection angle of 72° are to be connected by a compound curveof two branches of equal length. The radius of the fIrst arc is 300 mt and that of the second is400 mt. The chainage of intersection point is 1500 mt, calculate the chainages of tangentpoints and also at point of compound curvature. (10 Marks)

b. Two parallel railway lines are to be connected by a reverse curve of different radii. If thelines are 10 mt apart and the maximum distance between tangent points measured parallel tothe straight is 45 m. Calculate the radius of the second branch if that of the first branch is 65m. Also calculate the length of both the branches. (10 Marks)'-

7 a. What is a transition curve? Where is it used? List the essential conditions that are to befulfIlled by a transition curve. (06 Marks)

b. What are vertical curves? Where is it provided? List the different types of vertical curveswith neat sketches. (06 Marks)

c. A transition curve is required for a circular curve of 200 mt. radius, the gauge being 1.5 mtand max. superelevation restricted to 15 cm. The transition is to be designed for a velocitysuch that no lateral pressure is imposed on the rails and the rate of gain of radial accelerationis 30 cm/sec3

. Calculate the required length of the transition curve and the design speed.(08 Marks)

8 a. A series of offsets curve were taken from a chain line to a curved boundary line at intervalsof 15 mt in the following order:

0, 2.65, 3.80, 3.75, 4.65, 3.60, 4.95, 5.85mCompute the area between the chain line, the curved boundary and the end offsets byi) Average ordinate rule (ii) Trapezoidal rule iii) Simpson's rule. (10 Marks)

b. A railway embankment 400 mt long is 12 mt wide at the formation level and has the sideslope 2 to 1. The ground levels at every 100 mt along the centre line are as under.

Distance 0 100 200 300 400R.L. 204.8 206.2 207.5 207.2 208.3

The formation level at zero chainage is 207.000 and the embankment has a rising gradient of1 in 100. The ground is level across the centre line. Calculate the volume of earthwork.

(10 Marks)

www.bookspar.com | VTU NOTES | QUESTION PAPERS | NEWS | VTU RESULTS | FORUM | VTU BOOKSPAR APP

www.bookspar.com | VTU NOTES | QUESTION PAPERS | NEWS | VTU RESULTS | FORUM | VTU BOOKSPAR APP