1000+ Civil Engineering Questions and Answers Pdf - 2

Question: 6

Which one of the following methods of tunneling does not require the use of time bearing.

(A) compressed air method

(B) linear plate method

(C) shield method

(D) mechanical tunneler i.e. mole method

(E) all the above

Question: 7

In case of drift method of tunnelling, the drift may be excavated at

(A) the centre

(B) the top

(C) the side

(D) the bottom

(E) all the above

Question: 8

The length of the needle beam used in needle beam method of tunneling is usually

(A) 2m to 4 m

(B) 2.5 m to 6 m

(C) 4. 5 m to 6 m

(D) 6. 5 m to 6 m

Question: 9

Pick up the correct statement from the following during tunnel excavation

(A) Oxygen should not be less than 19.5%

(B) Carbon monoxide should not be more than 0.01%

(C) Carbondioxide should not be more than 0.5%

(D) Hydrogen sulphide should not be more than 0.001%

(E) all the above

Question: 10

The method of draining in the tunnels, is generally known as

(A) foredrainage

(B) permanent drainage

(C) dewatering

(D) all of the above