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B3E032 Pages:2

Reg. No. Name:
APJ ABDUL KALAM TECHNOLOGICAL UNIVERSITY
THIRD SEMESTER B.TECH DEGREE EXAMINATION, JANUARY 2017

Course Code: CE 207
Course Name: SURVEYING (CE)

Max. Marks: 100 Duration: 3 Hours
PARTA
(Answer Any Two Full Questions)

1. (a) What are the general principles of surveying? Differentiate between plane and
geodetic surveying. (7.5)
(b) Define contour and explain any six characteristics of contours. (7.5)

2. (a) Distinguish between fore bearing and back bearing. How are they related with each
other? (2.5)
(b) The magnetic bearing of a line at a station point was found as 187°. It was
found that the station was affected by local attraction. The local attraction at the station
rotates the magnetic needle 2° anticlockwise from its meridian. Calculate correct
magnetic bearing of the line. Estimate true bearing of the line if the magnetic
declination at the station is 4°E. (5)
(c) The following readings were taken with a dumpy level and a4 m levelling staff
on a continuously sloping ground at 30m intervals.
0.685, 1.455,1.850,2.330,2.885,3.380, 1.055, 1.860,2.265,3.540,0.835,0.945,1.530 and
2.250. The reduced level of the first point is 80.750. Rule out a page of a level book
and enter the above readings. Determine RLs of all points using height of instrument
method. Determine the gradient of the line joining the first and last point. (7.5)

3. (a) What is meant by local attraction? How do you apply correction to it? How does it
affect the computation of included angles? (7.5)
(b) What is reciprocal levelling? How it is accomplished? In reciprocal levelling
between two stations A and B the level was set up near A and the staff readings on A
and B were 2.645 and 3.220 m respectively. The level was then moved and set up near
B, the respective staff readings on A and B were 1.085 and 1.665. Find the true
difference in level between A and B. (7.5)

PART B
(Answer Any Two Full Questions)

4. (a) State Simpson’s rule and Trapezoidal rule for computation of area. A series of

offsets were taken at 3m intervals in the following order from a chain line to a

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