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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 1 of 2.
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.
Santhosh C said:   8 years ago
Option A is also the correct answer.
Pavi said:   8 years ago
Option A is also correct I think.
Ajeet singh said:   8 years ago
Yes, First sight taken is back sight in levelling. What is the right?

Please explain.
Aamir said:   8 years ago
Actually, we have to see the incorrect one, first 3 are correct only d is wrong.
Yashpal said:   8 years ago
1 2 3 are correct 4 are wrong.
Dpk said:   7 years ago
According to me, 124 are correct, and 3rd is wrong.
Kalpesh said:   7 years ago
According to me, A and D both are right.
Deepak nagar said:   7 years ago
Here question about change point's first reading not about first reading of station.

Because at the change point staff will be held at the same place and telescope have taken from one point to another point.

So in this case first reading at change point will be last reading of telescope station which is actually fore bearing.
(1)
Shakeel said:   7 years ago
1, 2, and 4 is right.
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