Q1 (a) Q1(b) RL TBM A RL TBM B RL TBM A RL TBM B AAA.AAA ВBB.BB AAA.AAA ВВB.ВB 135.975 134.665 135.475 134.165 Q1. Table Ql shows the levelling data obtained from field observations between two temporary benchmarks namely TBM 1 and TBM 2, respectively. Where, the total levelling distance between TBM 1 and TBM 2 is 250 metres. As a junior site civil engineer at the construction site, you have been assigned by a senior site civil engineer to finalise and evaluate the levelling data to ensure the levelling work complies with the levelling standard and procedures. Table Q1 Intermediate Backsight Foresight Remarks Sight 1.592 TBM 1 RL= AAA.AAA m 1.379 Point 1 1.384 Point 2 1.406 Point 3 1.675 2.052 CP1 1.354 1.704 СР2 1.320 0.907 CP3 0.940 1.315 СР4 0.832 1.507 CP5 -2.938 Soffit 1 -2.833 Soffit 2 -2.717 Soffit 3 1.546 TBM 2 RL=BBB.BBB m a) Finalise the levelling calculation using rise and fall method, performed arithmetic check, accuracy check, levelling misclosure and final reduced level for all observed points. | b) For verification purpose you are required to re-calculate the reduced level using height of plain collimation (HPC) method, performed arithmetic check, accuracy check, levelling misclosure and final reduced level for all observed points.

Q: 7. A horizontal collimation test is performed on an automatic level. With the instrument setup at…

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Q: Q: Using a digital laser level instrument, the following staff readings were observed via an open…

A: Here we have given a open loop and we will use rise and fall method to calculate the RL's of each…

Q: To meet a third leveling accuracy, the maximum misclosure of a level run of 4000 meters should be…

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Q: Surveying The following staff readings were taken in succession with a dumpy level. The instrument…

A: Given data, 1st reading was taken on a BM , RL of benchmark= 200.00m The instrument was shifted…

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

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Q: Situation 41 For the survey conducted in measuring the elevation of Hill Amos, it was assumed that…

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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: Two field parties working on South Field Traverse each independently measured the length of one side…

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

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Q: What is required is to find all the missing values ​​in the table below for one of the successive…

A: St. B.S I.S F.S Rise Fall Elevation Remark 1 3.150         219.965   2 1.770   3.85   0.700…

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: The following readings were taken with a level on a 5m staff in a levelling operation from points 1…

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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.