Question

Base course and sub-base course are used under flexible pavements for __________ purpose.

(a) To provide foundation

(b) To increase durability

(c) To increase load supporting capacity

(d) All of the mentioned

This question was posed to me in exam.

My question is taken from Flexible Pavement Design in chapter Design of Flexible & Rigid Pavement of Geotechnical Engineering II

Answer 1

Correct choice is (c) To increase load supporting capacity

To explain: Base course and sub-base course are used under flexible pavements primarily to increase the load supporting capacity of the pavement by distributing the load through a finite thickness of pavement.