Consider the following statements regarding, the function of base course and sub-base course in pavement layers:
i. Prevent mud-pumping in rigid pavement
ii. Protect sub-grade of rigid pavement from frost action
iii. Provide tensile strength to the flexible pavement
iv. Distribute the load in flexible pavement
v. Prevent warping stresses in rigid pavement.
Which of the above statements are correct?
1
Only i, ii and iv
2
Only i, ii and v
3
Only ii, iii and v
4
Both ii and iv