The correct sequence of layers from top to bottom in a flexible pavement structure is:
Choose the correct answer
Wearing course - binder course - base - sub-base - subgrade
Sub-base - base - binder - wearing - subgrade
Subgrade - base - sub-base - binder - wearing
Subgrade - sub-base - base - binder course - wearing course
Correct Answer
D. Subgrade - sub-base - base - binder course - wearing course
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Standard flexible pavement: Subgrade (natural soil) -> Granular Sub-Base (GSB) -> Water Bound Macadam/Dense Graded Base -> Binder Course (DBM/AC) -> Surface/Wearing Course (BC/SMA). Total thickness designed by CBR/traffic method.
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