Civil Engineering MCQAE Level Civil Engineering
The correct sequence of layers from top to bottom in a flexible pavement structure is:
Transportation EngineeringFlexible Pavement LayersMEDIUM
Choose the correct answer
A
Wearing course - binder course - base - sub-base - subgrade
B
Sub-base - base - binder - wearing - subgrade
C
Subgrade - base - sub-base - binder - wearing
D
Subgrade - sub-base - base - binder course - wearing course
Correct Answer
A. Wearing course - binder course - base - sub-base - subgrade
Why is this the answer?
Standard flexible pavement: Surface/Wearing Course -> Binder Course -> Base Course -> Granular Sub-Base (GSB) -> Subgrade (natural soil). The sequence from top to bottom is Wearing course - binder course - base - sub-base - subgrade.
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