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  3. a surveyor completes a levelling circuit from a kn

A surveyor completes a levelling circuit from a known BM at point A (RL = 37.730...

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Civil Engineering

  1. A surveyor completes a levelling circuit from a knownBM at point A (RL = 37.730 m). At the end of the survey, thesurveyor finds out that the rod person moved the graduated staffbefore a BS value was taken at the third change point. The levelsobtained are as follows:  

1.857 (RL =37.567 m), (0.983, 0.354), 0.571, 1.011, 2.151, (1.124,x), 0.890, (0.543, 3.178), 3.808.  

  1. Assuming that the misclosure for the level circuit is0.000 m, find the probable value of the missing BS valuex.   
  2. Is the value of x in part (a) acceptable?Explain. (1 mark)

Book the levels, including the value of xcalculated in part (a) using the HPC method and show all arithmeticchecks. (1 mark

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