Wednesday, December 9, 2015

SURVEYING – I,2011 Question Paper,S.E. Civil (Semester – II),University Of Pune Question Paper

University Of Pune Question Paper
S.E. Civil (Semester – II) Examination, 2011
SURVEYING – I
(2003 Course)
Time : 3 Hours Max. Marks : 100
SECTION – I
1. a) Describe the collimation method of reducing the levels, compare the collimation
method with the rise and fall method. 6
b) The following notes refer to the reciprocal levels taken with a dumpy level : 6
Instrument station Staff readings on Remarks
A B
A 1.03 1.630 AB = 800 m
B 0.95 1.540 R.L. of A = 450 m
Find
i) True R.L. of B
ii) Combined correction for curvature and refraction
iii) The error in collimation adjustment of the instrument.
c) Find the height of Tee-beam above the floor level. The R.L. of the floor is
100.855 m, and the staff reading on the floor is 2.055. The reading on the staff
held upside down against the underside of the beam is 3.565 m. 6
OR
2. a) Explain fully the process of reciprocal levelling and state its advantage. 6
b) State and explain the various axes of dumpy level. 6
c) Define following terms : 6
i) Height of Instrument ii) Parallax
iii) Line of sight iv) Back sight reading.
3. a) Give list of temporary and permanent adjustments of a Transit Theodolite. 6
b) Explain how would you measure with theodolite a vertical angle. 4
c) What is meant by face left and face right of theodolite ? How would you
change the face ? What instrumental errors are eliminated by face left and face
right observations. 6
OR
4. a) What do you understand by Gales traverse system ? How are the calculations
are made ? 4
b) Following are the lengths and bearings of traverse ABCD : 8
Line Length, m Bearings
AB 248.00 30°
BC 320.00 140°
CD 180.00 210°
Calculate the length and bearing of the line DA.
c) Define traverse. Draw a neat sketch of open and closed Traverse ? Also state
the circumstance under which you would prefer open and closed traverse. 4
5. a) How would you determine the multipling and additive constants of a
tacheometer ? 6
b) State any four advantages of Tacheometric survey. 4
c) Determine the distance between the instrument station P and the staff station Q
from the following data : 6
R.L. of the instrument axis = 200.150 m
vertical Angle = 3° 45′
staff readings = 1.450, 0.900, 0.350
Also determine R.L. of Q, Take M = 100 and C = 0.0.
OR
6. a) State any four characteristics of contour lines. 4
b) Define contour. State various uses of contour maps. 6
-3- [3962] – 258
c) A tacheometer is used to obtain the difference of levels between two points
A and B. The instrument is set up at another station C, and the following
observations were made 6
Staff at Vertical Angle Stadia Readings
A – 6°30′ 3.500, 2.815, 2.130
B – 8°30′ 1.870, 0.990, 0.110
If the R.L. of A is 100.00, determine the R.L. of B. Also determine the
horizontal distance of A from C. Take M = 50.00 and C = 0.50.
SECTION – II
7. a) What are the different types of horizontal circular curves ? How would you
select most suitable type for a particular site ? 4
b) Explain the following : 6
i) Tangent point and point of curve
ii) Deflection angle and angle of intersection
iii) Normal chord and sub chord
c) List the various methods of setting out a simple circular curve. Explain briefly
the Rankine method of deflection angles. 6
OR
8. a) Two tangents intersect at the chainage 2000 m, deflection angle being 30°.
Calculate the length of first and last subchord. Take peg interval = 30 m and
Radius of curve = 300 m. 6
b) Draw a neat sketch of compound curve and show its various elements. 6
c) Draw a neat sketch of reverse curve and discuss the merits and demerits of
reverse curve. 4
9. a) A road bend which deflects 85° is to be designed for a maximum speed of
80 km per hour with a curve consisting of a circular arc combined with two
cubic spirals. If the maximum centrifugal ratio is 4
1 and the maximum rate of
change of radial acceleration is 0.3 m/sec2/sec, 6
Calculate :
i) the radius of circular curve
ii) the length of transition curve
iii) shift of curve.
b) Describe the procedure of setting out a simple circular curve by Rankine’s
method of deflection angles. 6
c) Write a short note on Transition curve. 4
OR
10. a) A transition curve is to be designed for a road curve, which deflects 85°.
Maximum allowable speed on circular curve is 80 km per hour. If the maximum
centrifugal ratio is 4
1 and the maximum rate of change of radial acceleration
is 0.3 m/sec3
, calculate : 6
i) The radius of circular curve
ii) The length of transition curve
iii) Shift of curve.
b) How would you decide the length of transition curve ? Discuss the various
methods. 6
c) Write a short note on vertical curves. 4
11. a) Discuss in brief the advantages and disadvantages of plane table surveying. 6
b) State three point problem. Explain, how it is solved by the graphical method. 6
c) Discuss in brief direct and indirect method of contouring. 6
OR
12. a) Write a short note on uses of contour Maps for engineering purpose. 6
b) State the use of various accessories required for plane table surveying. 6
c) Write short notes on Radiation method of plane table survey. 6
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