On the problem diagrams are instrument locations, blue numbers are sight distances, green are raw field elevations. Each network was run in the direction of the dashed brown line.

Adjust the non-turning points in each problem using the (1) Even distribution and (2) Proportional distribution. Compute to 0.001'.

Problem 1.

BM Nancy's elevation is 689.36'.

M = 689.41'-689.36' = +0.05'

(1) Equal Distribution

Number of elevations: n = 6

 

 

 

(2) Proportional distribution

Distance to points

A: 161'+158' = 319'

B: 319'+(235'+232')+(105'+107') = 998'

C: 998'+(201'+198')+(99'+101') = 1597'

BM Nancy: 1597'+(175'+173') = 1945'

 

Problem 2.

Benchmark elevations

BM BoBo 1056.39
Bm McGee 1081.94

 

 

The adjusted elevations are:

Point A. Even B. Proportional
A 1062.760' 1062.761'
B 1066.070' 1066.068'
C 1076.240' 1076.240

Computations are left to the reader.

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