Problem (1)

Given the level circuit below, what are the adjusted elevations and their expected errors for points A and B? Compute to both to 0.001 ft.

Obs dElev (ft) Len* (ft)   Obs dElev (ft) Len* (ft)
1 +3.28 625   4 -2.48 1100
2 -11.81 800   5 -11.85 750
3 +14.51 550   6 +8.58 375

*Len is the sum of the backsight and foresite distances for the observation run.

Solution:

 

ElevA = 938.528 ±0.038

ElevB = 926.661 ±0.032

 

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