If the R.L. of a B.M. is 100.00 m, the back- sight is 1.215 m and the foresight is 1.870 m, the R.L. of the forward station is
A. 99.345 m
B. 100.345 m
C. 100.655 m
D. 101.870 m
Answer: Option A
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In case force sight is not given, how to calculate RL of forward station?
RL + back side = Hi- foresight
100.00+1.215 =101.215-1.879 =99.345
explain