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Engineering, 21.01.2021 23:10 janyiareese12

Corrections for curvature and refraction (c r) are applied to: . a. benchmark elevations (BM)
b. both foresight rod readings (FS) and backsight rod readings (BS)
c. foresight rod readings (FS)
d. backsight rod readings (BS)

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Corrections for curvature and refraction (c r) are applied to: . a. benchmark elevations (BM)
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