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

good

fair

poor

very poor

total depth of pavement

quality of surface course

both the above

none of the above

equal to 1

less than 1

greater than 1

zero