wearing course

base course

sub-base course

subgrade

directly to subgrade

through structural action

through a set of layers to the subgrade

none of the above

1000

10000

100000

1000000

a theoretical method

an empirical method based on physical properties of subgrade soil

an empirical method based on strength characteristics of subgrade soil

a semi empirical method

More the value of group index, less thickness of pavement will be required.

More the value of CBR, greater thick-ness of pavement will be required.

Minimum and maximum values of group index can be 0 and 20 respec-tively.

all of the above