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What is the primary purpose of a subgrade in road construction?
44. What is the primary purpose of a subgrade in road construction?
- Provide smoothness to the road surface
- Support the pavement structure
- Improve the aesthetics of the road
- None of these
Answer
The correct answer is: B) Support the pavement structure
Explanation
The natural soil or prepared surface known as the subgrade serves as the foundation for the road pavement and gives the structure of the road strength and stability.