# JNTU exam papers B -Tech I Sem Supplimentary Examinations, Surveying – November 2008

JNTU II B.Tech I Semester Supplimentary Examinations, November 2008

SURVEYING

(Civil Engineering)

SET1

1. (a) Describe plane Table intersection method with the help of neat sketches. Under what circumstances this method is resorted to.

(b) Explain the various sources of errors in plane Table Surveying.

2. (a) What is a traverse. What are the different types of traverse. Briefly explain the methods of traversing.

(b) The fore and back hearings of the lines of a closed traverse are as follows

correct the bearings for local attraction.

Line F.B B.B

AB …………. 32030? ……….. …2140301

BC………….124o30? ……………..303o15?

CD………….181o00? ….. …………..1o00?

DA…………..289o30? ………. …..108o45?

3. (a) What are the permanent adjustment of levels?

(b) Explain the principle of “reversion”.

(c) Name the principal lines in a dumpy level. List the conditions of adjustments.

4. (a) List the methods of calculating are as from offsets to a base-line.

(b) Explain the trapezoidal rule.

(c) How does the trapezoidal rule compare with other rules.

5. (a) What are ‘face left’ and ‘face right’ observations? Why is it necessary to take both face observations?

(b) Why both verniers are read?

(c) Discuss various personal errors and errors due to natural causes in avernier theodolite

6. Derive the expressions for the horizontal distance D and the vertical intercept V

when the staff is

(a) Vertical

(b) Normal

7. (a) What are the elements of a simple circular curve. Give their relationships

. (b) Two roads meet an angle of 127030?. Calculate the necessary data for setting

out a curve of 15 chains radius to connect two straight portions of the road if

it is intended to set out the curve by chain and offsets only. Take length of chain as 30m

8. Explain about the segments of Global Positioning system?