If ‘D’ is the diameter of tunnel in meters, then the thickness of lining in mm, as per the empirical formula is given by_________________?

Related Mcqs:

Drifters can be used to drill_________________?

A. only up holes B. only down holes C. horizontal or up holes D. horizor„al, down or up holes...

Drift method of tunnelling is used to construct tunnels in__________________?

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

Ribs are used for strengthening and stiffening the liner plate for tunnels of diameter greater than_____________________?

A. 2 m B. 3 m C. 4 m D. 5 m...

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...

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...