Civil Engineering - Surveying - Discussion

Discussion Forum : Surveying - Section 4 (Q.No. 11)

Surveying

11.

In levelling operation,

The first sight on any change point is a back sight

The second sight on any change point is a fore sight

The line commences with a fore sight and closes with a back sight

The line commences with a back sight and closes with a foresight.

Answer: Option

Explanation:

No answer description is available. Let's discuss.

Discussion:

14 comments Page 2 of 2.

Ajeet singh said: 8 years ago

Yes, First sight taken is back sight in levelling. What is the right?

Please explain.

Pavi said: 8 years ago

Option A is also correct I think.

Santhosh C said: 8 years ago

Option A is also the correct answer.

Bharath said: 9 years ago

Yes, BS is taken first.
When we Take levels through auto level;

HI =height of Instrument.
Fs - foresight.
IS - intermediate sight.

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