The relation between the coefficient of permeability and soil particle size is generally such that permeability:
Correct answer: D. Increases as particle size increases
- A. Depends only on soil plasticity
- B. Decreases as particle size increases
- C. Remains constant for all particle sizes
- D. Increases as particle size increases
Explanation
Larger particles usually create larger and more continuous flow channels, allowing water to pass more easily. Fine-grained soils generally have much lower permeability than sands and gravels.
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About Soil Mechanics and Foundations
Soil mechanics examines index properties, phase relationships, classification, permeability, seepage, compaction, consolidation, shear strength and earth pressure. Foundations apply these principles to bearing capacity, settlement and shallow or deep foundation selection, with clear distinction between compaction, which expels air, and consolidation, which expels water over time.
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