GATE CE 2014 Set 1 — Question 64
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Geomatics Engineering → Levelling → Differential Levelling
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Question
A levelling is carried out to establish the Reduced Levels (RL) of point R with respect to the Bench Mark (BM) at P. The staff readings taken are given below.
If RL of P is +100.000 m, then RL (in m) of R is
| Staff Station | BS | IS | FS | RL |
|---|---|---|---|---|
| P | 1.655 m | 100.000 m | ||
| Q | -0.950 m | -1.500 m | ||
| R | 0.750 m | ? |
Correct answer
(C) 101.455
Solution
Using the Height of Instrument (HI) method:
1.At station P:
m.2.At station Q:
m.3.At station Q (new setup):
m.4.At station R:
m.Thus, the RL of R is 101.455 m.Continue learning with Success Tracker
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