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

Related Mcqs:

In compressed air tunneling, the volume of free air provided is______________?

A. 6 mJ per second per m2 of face area B. 6 m3 per minute per m2 of face area C. 20 m3 per minute per m2 of face area D. 6 m3 per hour per m2 of face area...

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...

Which of the following is not a component of the shield ?

A. propelling jacks B. liner plate C. hood D. tail...

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...

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...