Discussion :: Tunneling
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Which one of the following statements is not correct in respect of setting of an inclined tunnel:
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A.
Reference points are constructed at every 300 m.
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B.
The alignment is fixed from upper/lower apex point.
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C.
The level of the invert at the heading is marked by a tape.
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D.
Reference points are constructed on the roof of tunnels
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E.
None the above.
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Answer : Option E
Explanation :
No answer description available for this question.
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