Computer · Tunnel Engineering
For initial surveys of tunnels, the following activities are involved: (a) Marking portal points with concrete pillars on the ground. (b) Marking tunnel obligatory points on the topographical maps. (c) Driving lines between the fixed obligatory points. (d) Preliminary setting of the tunnel on the topographical survey of India maps. The correct sequence of these activities is:
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1(c), (b), (d), (a)
- 2(d), (b), (c), (a)✓
- 3(a), (b), (c), (d)
- 4(b), (a), (d), (c)
Correct answer
(d), (b), (c), (a)
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