Differential levelling online calculation

 

 

Basis Data:

Number of measuring points (maximum 200)
Unit of length Meter (m)
Foot (feet, ft)

 

 

Main Table:

  Reading Results
  Name point Backsight (m) Intermediate sight (m) Foresight (m) Elevation bench mark (m) Rise/
Fall (m) 		Reduced level (m) Adjustment
(m) 		Adjusted reduced level (m)
1

     
2

+0.860 150.627 +0.001 150.628
3

-0.766 149.861 +0.001 149.863
4

+0.852 150.713 +0.001 150.716
5

+1.437 152.150 +0.001 152.154
6

-0.889 151.261 +0.001 151.266
7

+3.521 154.782 +0.001 154.788
8

+1.843 156.625 +0.001 156.632
9

    +1.401 158.026 +0.001 158.034

 

 

Error evaluation:

Calculate allowable misclosure
Section Sum backsights (m) Sum foresights (m) Difference
∑backsights/∑foresights (m)
(actual value) 		Difference
bench marks
first / last point (m)
(nominal value) 		Nominal-actual value difference (misclosure) (mm)
BM 1 to BM 2 18.945 10.686 8.259 8.267 8