Diploma-Diploma Civil Engineering 3rd Sem Surveying - I(Gujarat Technological University-2013)
Friday, 30 August 2013 04:25anudouglas
GUJARAT TECHNOLOGICAL UNIVERSITY
Diploma Engineering - SEMESTER – III • EXAMINATION – WINTER 2012
Subject code: 330601 Date: 02/01/2013
Subject Name: Surveying - I
Time: 02.30 pm - 05.00 pm Total Marks: 70
Instructions:
1. Attempt any five questions.
2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.
4. English version is considered to be Authentic.
Q.1 (a) i. Define surveying and state purposes of surveying.
ii. What is Scale ? State reasons for drawing scale on map.
iii. A plan represent an area of 93750 m2 and measures 6 cm x 6.25 cm. Find out
RF of the scale.
(b) Define the terms :
i. Meridian ii. Bench mark iii. Elevation
iv. Orientation v. Transiting vi. Axis of Telescope vii. Base line
Q.2 (a) i. Explain method of testing and adjusting the chain.
ii. Explain the types of traverse.
(b) i. Suggest the colour used for drawing following conventional signs.
Building, Bridge, River, Garden, Barren land ii. Enlist the method of plane tabling
OR
(b) State the functions of major parts of prismatic compass. 07
Q.3 (a) Explain in brief various methods of chaining on sloping ground. 07
(b) i. Compare “ Prismatic compass and surveyor’s compass.
ii. State uses of theodolite.
OR
Q.3 (a) State and Explain in brief various methods of setting right angles. 07
(b) State in detail principal sources of errors in levelling and what precaution should
be taken to guard against them.
Q.4 (a) i. Explain the methods used for your project work of plain tabling.
ii. Explain the use of plumbing fork.
(b) State and explain various methods of interpolating contours. 07
OR
Q. 4 (a) Define contour and state characteristics of contours. 07
(b) i. Explain with neat sketch the method of square for location of contours.
ii. Give formula of correction for curvature and refraction.
Q.5 (a) i. The distance between two points measured along a slope is 150 m. Find the
horizontal distance between them if (a) the angle of slope between the points is 10°
(b) the difference in level is 18 m,
(c) the slope is 1 in 4
ii. Find the hypotenusal allowance per chain of 30 m length if angle of slope is
15°.
(b) i. Convert 143° 15’ in to R.B. and S 27° 45’W in to WCB
ii. Bearing of line OA and OB is N 82° 20’ W and 50° 30’ respectively, calculate angle AOB
iii. Calculate interior angle ABC from the following data.
Line FB
AB 116° 15’
BC 96° 15’
OR
Q.5 (a) The following consecutive readings were taken on a continuously sloping
ground at a common interval of 30 m with 4 m levelling staff. 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 3.015.
The R.L. of first point was 50.0 m. Prepare a 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. 07
(b) i. Explain grade contour.
ii. Explain with neat sketches the method of chaining when chaining and vision
both are obstructed. 04
*
| Earning: ₹ 0.00/- |
