11. RECIPROCAL LEVELING. In reciprocal leveling across a deep ravine the following sets of rod readings were takent: Instr Near A: BS on A=1.719 m, Average Fs on B=2.578 m Instr Near B: Average BS on A=1.335 m, FS n B=2.176 m Point A is on one side of the ravine and has a known éle- vation of 197.428 m. Point B is on the other side. Deter- mine the elevation of point B.

Q: A pre-engineering baseline was run down a very steep hill (see Rather than measure horizontally…

A: Vertical angle = -21o26' Height of range pole from the ground, h = 4.88 ft Slope distance between…

Q: In levelling between two points A and B opposite sides of a river, the level was set A and the staff…

A: hB= 2.3m hA=2.645m To find true difference between A and B

Q: A concrete rectangular channel is designed to carry a specific discharge of 0.84 m²/s. Assuming a…

A:

Q: A field party is capable of making taping observations with a standard deviation of +/-0.003 m per…

A:

Q: Reciprocal levelling is done to test a dumpy level, along a chain line, at a common interval of 25m,…

A: Given DatReduced Levels (RLs) at first station = 97.535 mReadings (BS, IS, FS) = 3.200, 2.135,…

Q: In order to transfer reduced level across a canyon, a reciprocal leveling campaign was conducted.…

A:

Q: 2. A reciprocal leveling is observed across a wide river and the reciprocal level readings were…

A:

Q: Reciprocal levelling is done to test a dumpy level, along a chain line, at a common interval of 15m,…

A: The readings from the dumpy level are given with 135m as the starting point with 15m intervals,…

Q: 3. In construction survey, a line BC 57.89m is to be laid out using a theodolite. The line has a…

A: Finding out elevation of point B.

Q: Stream cross-sectional areas (A) are required for a number of tasks in water resources engineering…

A: Given, common difference, d = 2m No if divisions, n = 10 No of ordinates, = 9 Simpson's rule is only…

Q: DIFFERENTIAL LEVELING For the given differential level notes. Determine the station with the highest…

A: Differential Levelling

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.