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

-0.120 150.507 0.000 150.508
4

-0.646 149.861 0.000 149.862
5

+0.852 150.713 0.000 150.714
6

    +1.437 152.150 0.000 152.151

 

 

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 3.717 2.977 0.740 0.741 1
BM 2 to BM 3 6.293 4.650 1.643 1.643 0