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Civil Engineering - Tunnelling

Exercise : Tunnelling - Section 1
  • Tunnelling - Section 1
36.
Which one of the following methods is generally adopted for tunnelling in firm ground
Full face method
Top heading and benching method
Drift method
All the above.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
37.
An overhead track on a large truss frame is required in case of car changer by
the grass hopper method
the passing track method
California crossing method
Dixon conveyor method.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
38.
Pick up the correct statement from the following:
The topographical maps of the Survey of India are useful in the mountainous region for tunnelling.
The height point on the ridge is fixed with the help of reciprocal ranging
The accuracy of 1 in 10, 000 is required for planimetric control
1 second theodolite is used for angular measurement to achieve an angular error of 15 N where N is number of angles
All the above.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
39.
In the given figure drill holes, heading, mucking and benching are mumbered as 1, 2, 3, 4 The correct sequence is :
4 1 2 3
1 2 3 4
4 1 3 2
3 4 1 3
Answer: Option
Explanation:
No answer description is available. Let's discuss.
40.
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
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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