A. liner plate
B. trench jack
C. stiffener
D. cutting edge
A. soft grounds
B. rock
C. self supporting grounds
D. broken grounds
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
A. 2 m
B. 3 m
C. 4 m
D. 5 m
A. 42 D
B. 82 D
C. 104 D
D. 124 D
A. propelling jacks
B. liner plate
C. hood
D. tail
A. 2N
B. N + 2
C. 2 N + 1
D. 2 N + 2
A. carrying water
B. non-cohesive soils
C. tunnels driven by shield method
D. placement of concrete lining
A. remains same
B. decreases
C. increases by 2.25 times
D. increases by 3.5 times
1. drilling and blasting
2. timbering
3. pumping
4. mucking
Select the correct answer using the codes given below Codes?
A. 1,2,3,4
B. 1,4,2,3
C. 2,1,4,3
D. 2,4,1,3