A tower is located on a hilltop at T. Angular readings are taken with a theodolite from two instrumentation stations A and B, which are 50 m apart. Given the following data, determine the R.L. of hilltop at T and the tower height. Height of instrument (R.L. of instrumental centre) = 10 m. Vertical angles from A to the top and bottom of the tower at T is 35° and 28°(upward) respectively. Whole circle bearing of line AT, AB and BTis 25°, 110°, 5° respectively

Q: The following observations were taken in reciprocal levelling. Staff reading at Instrument at A B A…

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Q: The following data were obtained by stadia observation: vertical angle, +12°30'; upper stadia hair…

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Q: An angle is observed repeatedly using the same equipment and procedures. Calculate (a) the angle’s…

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Q: A tacheometer was set up at station P and observations were made to two stations Q and R. The…

A: Vertical angle to Q = 5°30'Vertical angle to R = 1°08'Cross-hair readings at Q ⇒ 2.105, 2.47 and…

Q: The upper and lower stadia hair readings on a stadia rod held at station B were observed as 3.50 and…

A: Given:- The upper and lower stadia hair readings on a stadia rod held at station B = 3.50 m and 1.00…

Q: INSTRUMENT STAFF AT ZENITH ANGLE STAFF READING AT STATION Upper Middle Lower 1 96°55' 1.388 0.899…

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Q: PROBLEMS 1. Two distances of 50 and 80 meters were accuratel intercepts on the staff between the…

A: GIVEN : staff intercept (S1)=0.004 staff intercept (S2)=0.007 D1=50 mD2=80 m

Q: situation 3] Points A, B, and C have mean sea elevation of 660 m, 626 m, and 600 m, respectively.…

A: i)  Cc=-0.0785d2=-0.0785×102=-7.85Cr=0.0112d2=0.0112×102=1.12Elevation at point…

Q: B: Find the elevation of point (B) from the figure (2) that showing below : Fig. (2) 1.48 m IR Elev.…

A: Draw the given figure:-

Q: A tower appears in two successive photographs taken at an altitude of 4000m above the datum. The…

A: Altitude H=4000 m above the datum.Focal length of the camera f=160 mm,Parallax from the top-Pt=72…

Q: From the given data of a differential leveling as shown in the tabulation: STA. B.S. F.S. ELEV. 1…

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Q: To test its line of sight adjustment, a level is set up near C (elev. 193.436 m) and then near D.…

A: station C elevation is given as 193.436 mwhen setup is near C: station C reading =1.315 m…

Methods of Surveying

Surveying is the practice to determine the relative three-dimensional positions of various points on the earth’s surface. This is done by computing the vertical and horizontal distances, angles between the points, collecting the observations, and plotting them on a map of any appropriate scale. Accuracy can be achieved by using the latest instruments like a theodolite, tachometer, etc. Leveling is a subdivision of surveying where the objective is to locate the elevation of objects considering a datum level.