American method of tunneling________________?

Related Mcqs:

1. Assertion A : English method of tunneling requires more time as compared to other methods of tunneling. Reason R : In English method of tunneling, the masons and excavators have to work alternately/

   A. Both A and R are true and R is the correct explanation of A.
   B. Both A and R are true and R is not the correct explanation of A.
   C. A is true but R is false.
   D. A is false but R is true.

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

   A. It is suitable for construction in unstable rocks
   B. In this method, it is easy to install timber support
   C. Tunnelling can be continuous and the work can be expedited
   D. In case of excessive water, it is easy to take correct steps

3. Drift method of tunnelling is used to construct tunnels in__________________?

   A. soft grounds
   B. rock
   C. self supporting grounds
   D. broken grounds

4. In Belgium method of tunneling _________________?

   A. construction of side walls is completed before invert and roof arch are built
   B. construction of roof arch is completed before side walls and invert are built
   C. construction of invert is completed before side walls and roof arch are built
   D. construction of invert and side walls is completed before roof arch is built

5. The needle beam method of tunneling______________?

   (i) is suitable for soils in which roof can stand for few minutes without support
   (ii) is suitable for brick lining
   (iii) is suitable for concrete lining
   (iv) requires large number of trench jacks
   select the answer?

   A. only (i) is correct
   B. (i), (ii) and (iv) are correct
   C. (i), (iii) and (iv) are correct
   D. (i) and (ii) are correct

6. In the construction of Metro Railways, “Cut and Cover” method of construction is suitable in situations listed at________________?

   Consider the following situations

   1. Soil is soft
   2. Volume of existing surface traffic on the alignment is heavy
   3. Track is at a deeper level
   4. Water table is high

   A. 1 and 2
   B. 1 and 3
   C. 1 and 4
   D. 2 and 3

7. In “full face” method of constructing tunnels, the first operation relates to______________?

   A. removal of bottom portion
   B. excavation of one drift in the centre
   C. removal of top portion
   D. excavation being done along the periphery

8. Which of the following lining material is useful for shield driven tunnels in sub aqueous regions ?

   A. stone masonry
   B. timber
   C. cast iron
   D. cement concrete

9. If ‘N’ is the number of shafts used, then the total number of feces available for attacking the excavation and construction in tunnels are_________________________?

   A. 2N
   B. N + 2
   C. 2 N + 1
   D. 2 N + 2

10. Assertion A : When rock conditions are favorable, it will not be necessary to take up concrete lining concurrently with the driving operations till the full length of the tunnel has been driven through rock. Reason R : A tunnel through rock, hard or soft, does not need any concrete lining________________?

    A. Both A and R are true and R is the correct explanation of A
    B. Both A and R are true but R is not the correct explanation of A
    C. A is true but R is false
    D. A is false but R is true