(a) Barometric levelling (b) Trigonometric levelling (c) Spirit levelling [16]
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1 Code No: R Set No. 1 II B.Tech I Semester Supplementary Examinations, February 2007 SURVEYING (Civil Engineering) Time: 3 hours Max Marks: 80 Answer any FIVE Questions All Questions carry equal marks 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. [8+8] 2. (a) Explain the terms : Check Line, Base Line, Tie Line, and oblique offset. [8] (b) Find the maximum length of offset so that the displacement on paper from both sources of error does not exceed 0.2 mm given that the offset is measured with an accuracy of 1 in 25 and the scale is 1cm = 50m. [8] 3. Explain the following principal methods of levelling: (a) Barometric levelling (b) Trigonometric levelling (c) Spirit levelling [16] 4. The areas enclosed by various contours on the upstream side of a dam are given below. Determination. (a) the capacity of the reservoir if the full reservoir level (FRL) is 125m. [8] (b) the elevation of the water surface when the reservoir is half-full. Ignore the volume below R.L. 100m. [8] Contour(m) Area(ha) (a) What do you understand by Temporary Adjustment? Describe in brief the various temporary adjustments of a Theodolite. [8] (b) Discuss the procedure of measuring a horizontal angle with a theodolite [8] 6. Differentiate between the fixed hair method and the movable hair method. Discuss the advantages and disadvantages of each method [16] 7. (a) What is a compound curve. If in a compound curve, the direction of the two straights and one radius are known, deduce the formula for other radius. [7] (b) Tabulate the necessary data to set out a right handed simple circular curve of 600m radius to connect two straights intersecting at a chainage of 3605m by Rankines method of deflection angles. The angle of deflection of the curve is 25 0 and the peg interval is 30m. [9] 1 of 2
2 Code No: R Set No (a) What is Geodetic Surveying? How it is different from Plane surveying [8] (b) Explain the importance of electronic surveying in the field of surveying [8] 2 of 2
3 Code No: R Set No. 2 II B.Tech I Semester Supplementary Examinations, February 2007 SURVEYING (Civil Engineering) Time: 3 hours Max Marks: 80 Answer any FIVE Questions All Questions carry equal marks 1. (a) What is local attraction. How is it detected and removed. (b) What do you understand by closing error of a compass traverse. Show how can it be adjusted by graphical method. [8+8] 2. (a) What are the essential differences between chain Survey and compass Survey. Under what circumstances compass Survey is preferred to other types of Surveys. (b) Find which station is free from local attraction and work out the correct bearings. Line F.B B.B AB 191 o o BC 39 o CD 22 o DE 242 o EA 330 o [8+8] 3. The following observations were made during the testing of a dumpy level: Instrument at Staff reading on A B A B Distance AB=150m Is the instrument in adjustment? To what reading should the line of collimation be adjusted when the instrument was at B? If the R.L of A= , what should be the R.L. of B. 4. What are the methods of measuring volume? Explain the measurement of volume from spot level. [16] 5. The table below gives the lengths and bearings of the lines of a traverse ABCDEA, the length and bearing of EA having been omitted. Calculate the length and bearing of the line EA. [16] [16] 1 of 2
4 Code No: R Set No. 2 Line Length (m) Bearing AB BC CD DE EA?? 6. (a) What is tangential system of tacheometry? What are its advantages and disadvantages over the stadia method? [8] (b) Determine the constants of a tacheometer if for the line of collimation horizontal, the staid readings for he staff held at 25 m and 50 m are respectively 1.900, and 2.22, 1.23 [8] 7. (a) Draw a neat sketch of a simple circular curve and represent different elements of it. [4] (b) Establish the relation δ = C R minutes [4] where δ = deflection angle of the chord; C = length of chord. R= Radius of the curve, (c) Calculate the perpendicular offsets at 20m intervals along the tangents to set out first five pegs of a simple circular curve of 250m radius. [8] 8. (a) What is Geodetic Surveying? How it is different from Plane surveying [8] (b) Explain the importance of electronic surveying in the field of surveying [8] 2 of 2
5 Code No: R Set No. 3 II B.Tech I Semester Supplementary Examinations, February 2007 SURVEYING (Civil Engineering) Time: 3 hours Max Marks: 80 Answer any FIVE Questions All Questions carry equal marks 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. [8+8] 2. (a) Explain the terms : Check Line, Base Line, Tie Line, and oblique offset. [8] (b) Find the maximum length of offset so that the displacement on paper from both sources of error does not exceed 0.2 mm given that the offset is measured with an accuracy of 1 in 25 and the scale is 1cm = 50m. [8] 3. (a) What are temporary adjustments? (b) Name the temporary adjustments of a level? Briefly explain them. [6+10] 4. What are the methods of measuring volume? Explain the measurement of volume from spot level. [16] 5. The following lengths and bearings were recorded in running a Theodolite traverse. Determine the omitted observations, the length & bearing of SP. [16] Line Length (m) WCB PQ QR RS SP 6. (a) Derive an expression for the horizontal distance of a vertical staff from a tacheometer, if the line of sight is horizontal. [8] (b) The following readings were taken with a vernier theodolite on to a vertical staff Horizontal distance Stadia readings m 0.780, 1.010, m 1.860, 2.165, Calculate the Tacheometric constants [8] 7. (a) Describe the method of setting out a simple circular curve using two Theodolites.- [8] (b) Two roads meet at angle of Calculate the necessary data for setting out a curve of 450m radius to connect two straight portions of the road if a Theodolite is available. [8] 1 of 2
6 Code No: R Set No (a) What is Geodetic Surveying? How it is different from Plane surveying [8] (b) Explain the importance of electronic surveying in the field of surveying [8] 2 of 2
7 Code No: R Set No. 4 II B.Tech I Semester Supplementary Examinations, February 2007 SURVEYING (Civil Engineering) Time: 3 hours Max Marks: 80 Answer any FIVE Questions All Questions carry equal marks 1. (a) Give a detailed classification of Surveys. (b) A line 3.2 km long is measured with a steel tape which is 20m under no pull at 30 o C. The tape in section is 1/8 cm wide and 1/20 cm thick. If one half of the line is measured at a temparature of 40 o c and the other half at 50 o C and the tape is attached to a pull of 200N, find the corrected total length of the line given the coefficient of expansion is per degree C, weight of tape per Cubic cm of steel = N, and E = N/mm 2. [7+9] 2. (a) Explain the different methods of plotting a compass traverse. (b) The following are the bearings of a closed traverse. Find out which of the stations are affected by local attraction. Tabulate the corrected bearings of lines. Line F.B B.B AB N W S E BC N E S W CD S E N W DE S E N W EA S W N E [8+8] 3. With the help of neat sketches explain the following terms: (a) Mean sea level (b) Bench mark (c) Line of collimation (d) Bubble line [4 4=16] 4. A railway embankment 400m long is 12m wide at the formation level and has the side slope 2 to 1. The ground levels at every 100m along the centre line one: Distance: R. L The formation level at Zero chainage is 207 and the embankment has a rising gradient of 1 in 100. The ground is level across the centre line. Calculate the volume of earthwork. [16] 1 of 2
8 Code No: R Set No The table below gives the lengths and bearings of the lines of a traverse ABCDEA, the length and bearing of EA having been omitted. Calculate the length and bearing of the line EA. [16] Line Length (m) Bearing AB BC CD DE EA?? 6. Determine the gradient from a point A to a point B from the following observations made with a tacheometer fitted with an anallactic lens. The constants of the instruments was 100 and the staff was held vertically: [16] Inst.Station Staff point Bearing Verticalangle Staff reading P A , 1.915, B , 1.885, (a) List out different methods of setting out simple curves. Explain Rankine s method of deflection angles for setting out a simple curve. [8] (b) Calculate the offsets at 15m intervals along the tangents to set out a simple circular curve of 300m radius. [8] 8. (a) What are the components of a GIS and give a brief account of them [8] (b) Give an account of sources of GIS Data [4] (c) What are the Spatial data models accounted in GIS and describe of each model [4] 2 of 2
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