For a saturated soil, the saturated unit weight is calculated using which expression?
Correct answer: D. γw(Gs + e)/(1 + e)
- A. γwGs(1 + e)
- B. γwGs/(1 + e)
- C. γw(1 + e)/Gs
- D. γw(Gs + e)/(1 + e)
Explanation
For saturated soil, all voids contain water, so the total weight includes the solids and water occupying the voids. The expression γw(Gs + e)/(1 + e) accounts for both components per unit total volume.
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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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