Discussion :: Tunneling
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Pick up the correct statement from the following:
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A.
The topographical maps of the Survey of India are useful in the mountainous region for tunnelling.
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B.
The height point on the ridge is fixed with the help of reciprocal ranging
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C.
The accuracy of 1 in 10, 000 is required for planimetric control
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D.
1 second theodolite is used for angular measurement to achieve an angular error of 15 N where N is number of angles
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E.
All the above.
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Answer : Option E
Explanation :
No answer description available for this question.
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