Question

In a levelling work sum of the back sight (BS) and FS have been found to be 3.085 m and 5.645 m respectively. If the reduced level (RL) of the starting station is 100m, the RL(in m) of the last station is

• A. 97.44

Answer 1

The correct option is A 97.44
$\because \sum FS>\sum BS,henceFALL$

$FALL=\sum FS-\sum BS$

$=5.645-3.085$

$=2.56m$

RL of last station = RL of first station - Fall

$=100-2.56$

$=97.44m$