1/3
Seat No.: Enrolment
GUJARAT TECHNOLOGICAL UNIVERSITY
DIPLOMA ENGINEERING SEMESTER -III• EXAMINATION SUMMER 2017
Subject Code: 330601 Date: 29 -04 2017
Subject Name: SURVEYING I
Time: 02:30 PM TO 05:00 PM Total Marks: 70
Instructions:
1. Attempt all questions.
2. Make Suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.
4. Use of programmable Communication aids are strictly prohibited.
5. Use of only simple calculator is permitted in Mathematics.
6. English version is authentic.
Q.1

Explain basic Principles of surveying. And construct a scale having R.F.=1/200 and show on it 32 m. distance.
07


R.F. 1/200 32


Explain
1. Indirect Ranging with sketch.
2. Magnetic Declination
07


1.
2.

Q.2

A 20 m chain was found to be 20 cm too long at the beginning and 20cm too short after measuring distance of 930 m. Chain was found 50cm too short after measuring another distance of 870 m. Calculate correct distance measured.
07


20 20 930 20cm 870 50cm


Draw neat sketch of prismatic compass and State the functions of major parts.
07



OR

i. Convert 340° in to R.B. and N 25° 45'W in to WCB
ii. Bearing of line OP and OR is 82° and 50° respectively,
calculate angle POR
iii. Calculate interior angle ABC from the following data.
Line FB
AB 126°
BC 86°
07

i. 340° N 25° 45'W WCB
ii. OP OR 82° 50°
POR

2/3
iii. ABC
Line FB
AB 126°
BC 86°
Q.3

The following consecutive readings were taken on a continuously sloping ground from point A to B at a common interval of 30 m with 4 m leveling staff. (A)0.585, 0.95, 1.95, 2.845, 3.645, 3.940, 0.965, 1.035, 1.690, 2.535, 3.845, 0.955, 1.580 and (B)3.015.
The R.L. of point A was 100.0 m. Rule out page of level book and calculate
R.L. of all points by H I method. Apply usual checks and determine the gradient of a line AB.
07


A B 4
(A)0.585, 0.95, 1.95, 2.845, 3.645, 3.940, 0.965, 1.035, 1.690, 2.535, 3.845, 0.955, 1.580 and (B)3.015.
A H I AB


Define contour
ii) Draw contour lines representing Hill and steep sloping ground
iii) Enlist uses of contour map.
07



III)

OR
Q.3

Following readings are taken with a level 4.0m leveling staff on Sloping ground. 1.135, 0.345, 1.265, 2.460, 3.675, 0.220, 1.105, 1.890, 2.885, 0.105, 2.435 3.075. The first reading was taken on BM having RL 50.0. Find the RL of points by rise fall method. Give arithmetic check.
07


4 1.135, 0.345, 1.265, 2.460, 3.675, 0.220, 1.105, 1.890, 2.885, 0.105, 2.435 3.075. BM RL 50.0


Explain the Temporary adjustment of dumpy level.
07



Q.4

Following bearings were observed while running a closed traverse. Correct
the bearing for local attraction and calculate included angles.
Line Fore Bearing Back Bearing
PQ 680 2480
QR 1300 3120
RS 2520 700
SP 3440 1640
07




3/3

Line Fore Bearing Back Bearing
PQ 680 2480
QR 1300 3120
RS 2520 700
SP 3440 1640

Classify errors in leveling and explain in brief.
07



OR
Q.4

Define the terms:
Change point Bench mark Axis of telescope Reduced level Back sight vi) Fore sight vii) contour Interval
07



vi) vii)


Explain the methods of Interpolation and characteristics of contours.
07



Q.5

Explain orientation in Plane Table Survey? Explain orientation procedure of plane table by back sighting.
07





State uses of theodolite.
ii) List methods of Plane Table Survey and explain any one in detail.
07


ii)

OR
Q.5

State advantages disadvantages of Plane Table Survey.
07





State the functions of following.
1. Clip screw 2. Telescope 3. Shifting head 4. Lower plate screw.
5. Vertical circle 6. U fork 7. Alidade
07


1. 2 3. 4.
5. 6. 7.