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Civil Engineering - UPSC Civil Service Exam Questions - Discussion

Discussion Forum : UPSC Civil Service Exam Questions - Section 2 (Q.No. 18)
UPSC Civil Service Exam Questions
18.
Which one of the following is considered to be an advantage of the heading and benching method of tunes construction ?
It is suitable for construction in unstable rocks
In this method, it is easy to install timber support
Tunnelling can be continous and the work can be expedited
In case of excessive water, it is easy to take corrective steps
Answer: Option
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