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)
1

   
2

-2.213 87.381
3

-0.673 86.708
4

+0.341 87.049
5

+0.457 87.506
6

    +2.087 89.593

 

 

Error evaluation:

Calculate allowable misclosure
Section Backsight (m) Foresight (m) Difference
backsight/foresight (m)
(actual value) 		Difference
bench marks
first / last point (m)
(nominal value) 		Nominal-actual value difference (misclosure) (mm)
BM 1 to BM 1 0.681 0.682 -0.001 0.000 1