The length of the needle beam used in needle beam method of tunnelling is usually?

2 m to 4 m
2.5 m to 6 m
4 m to 7 m
5 m to 6 m

LohaHridoy

4 views

2025-01-04 04:42

1 Answers

AhmedNazir

Answer: Option 4

4 views Answered 2022-09-01 13:21

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