Computer · Highway Engineering
Why is proper subsurface drainage essential for the subgrade soil in highway pavements?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1To prevent moisture accumulation and consequent reduction in shear strength✓
- 2To accelerate surface soil erosion
- 3To increase subgrade soil temperature during freezing weather
- 4To facilitate easy mixing of soil with cement
Correct answer
To prevent moisture accumulation and consequent reduction in shear strength
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