Which one of the following is considered to be an advantage of the heading and benching method of tunnel construction?

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Question:
Which one of the following is considered to be an advantage of the heading and benching method of tunnel construction?

1. tunneling can be continuous and the work can be expedited

2.in this method, it is easy to install timber support

3.in case of excessive water, it is easy to take correct steps

4. it is suitable for construction in unstable rocks

Posted Date:-2022-09-25 03:15:20

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