Flexible pavement distributes wheel load to subgrade through:
Choose the correct answer
Slab action (bending) like rigid pavement
Grain-to-grain contact through layered system — load spreads gradually to subgrade
Tension in the base layer
Suction from the subgrade only
Correct Answer
B. Grain-to-grain contact through layered system — load spreads gradually to subgrade
Why is this the answer?
Flexible pavement (bituminous) distributes load by grain-to-grain contact through layers of decreasing stiffness (wearing course → binder course → base course → sub-base → subgrade). Each layer reduces stress magnitude. Load spreads in a truncated cone. Pavement fails by fatigue cracking or rutting, not rigid punching.
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