As per IRC recommendations, the sub-grade or sub-base layer whatever underlies the concrete wearing slab, in concrete pavements, must confirm to the requirement that
A. no soft spots are present in the sub-grade or sub-base
B. the base or sub-base extends to atleast 30 cm wider on either side of the width to be concreted
C. the sub-grade is properly drained
D. all of the above
Answer:D
As per IRC recommendations, the sub-grade or sub-base layer whatever underlies the concrete wearing slab, in concrete pavements, must confirm to the requirement that
A. no soft spots are present in the sub-grade or sub-base B. the base or sub-base extends to atleast 30 cm wider on either side of the width to be concreted C. the sub-grade is properly drained D. all of the above