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Adjustment in levelling for same point vs unknown point

  1. Oct 22, 2016 #1
    1. The problem statement, all variables and given/known data
    in photo 391 , we can see that the levelling work is back to the same point , which is TBM1 . so , the adjustment of correction is (Bs -Fs ) / number of points ... But in 392-394 , the levelling work is from a known point to a different point .....
    I'm wondering that is the adjustment correct ? It's given that adjustment = end closure / number of TP ...
    2. Relevant equations


    3. The attempt at a solution
    In the table provided , we can see that there are only 2 TP , why the author divided by 3 for the case in 392-394 ?
     

    Attached Files:

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    • 392.PNG
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    • 393.PNG
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    • 393.PNG
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    • 394.PNG
      394.PNG
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  2. jcsd
  3. Oct 23, 2016 #2
    are 392-394 wrong ? because the correction are not applied to first 3 reading ....
     
  4. Oct 24, 2016 #3
    bump
     
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