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Question

A levelling is carried out to establish the reduced level (RL) of point R with respect to the bench mark (BM) at P. The staff reading taken are given below

Staff Station BS IS FS RL
P 1.655 - - 100.000
Q -0.950 - -1.500 -
R - - 0.750 ?

If RL of P is +100 m then RL (m) of R is

A
101.455
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B
100.355
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C
103.355
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D
103.155
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Solution

The correct option is A 101.455
RL of Q=100+1.655(1.500)

=103.155

RL of R=103.155+(0.9500.750)

=101.455

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