Example 2. A vertical angle of -15 35' is measured to the top of a flagpole from an instrument set up on a rolling hill with an inclined distance of 625,45 meters away from it. The instrument is 1.45 m above the ground whose elevation is 520.15 m above mean sea level. If the height of the flagpole is 8 meters, find: a). Horizontal distance from the instrument to the base of the pole b).the elevation of the base.

Q: What are the two methods of balancing field angles? Explain how each one is performed. Explain what…

A: Field angles of a Traverse are balanced when there is an error of closer while taking measurement in…

Q: In a vertical photograph taken from an altitude of 2800 m, a chimney of height 100 m, appears at a…

A: Altitude (H): 2800 mChimney height (h): 100 mDistance of chimney image from principal point (r): 80…

Q: Find out the deflection angles from the following observations Lines AB BC Bearing N 42° 20' E N 30°…

A: Given data  Angle at A for line AB (θAB) =N42°20'E Angle at B for line BC (θBC)  = N30°00'E  Find…

Q: Calculate the horizontal distance between point A and B if a slope distance of 3,562.15 feet is…

A: The values given  in the question are as follows: Slope distance between A and B(s)=3562.15 ft…

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.