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A partially saturated soil sample has natural moisture content of 25% and bulk unit weight of 18.5 kN/m3. The specific gravity of soil solids is 2.65 and unit weight of water is 9.81 kN/m3. The unit weight of the soil sample on full saturation is
  • a)
    20.12 kN/m3
  • b)
    18.50 kN/m3
  • c)
    21.12 kN/m3
  • d)
    19.03 kN/m3
Correct answer is option 'D'. Can you explain this answer?
Most Upvoted Answer
A partially saturated soil sample has natural moisture content of 25% ...
Given data:
- Natural moisture content (w) = 25%
- Bulk unit weight (𝛾) = 18.5 kN/m³
- Specific gravity of soil solids (G) = 2.65
- Unit weight of water (𝛾w) = 9.81 kN/m³

To find:
Unit weight of the soil sample on full saturation

Solution:
The unit weight of a soil sample on full saturation can be calculated using the following formula:

𝛾_sat = G × 𝛾w + (1 + w) × (𝛾 - 𝛾w)

Where:
𝛾_sat = Unit weight of the soil sample on full saturation
G = Specific gravity of soil solids
𝛾w = Unit weight of water
w = Natural moisture content
𝛾 = Bulk unit weight

Substituting the given values into the formula:
𝛾_sat = 2.65 × 9.81 + (1 + 0.25) × (18.5 - 9.81)
𝛾_sat = 26.0215 + 1.25 × 8.69
𝛾_sat = 26.0215 + 10.8625
𝛾_sat = 36.884 kN/m³

Therefore, the unit weight of the soil sample on full saturation is 36.884 kN/m³.

Answer:
The correct option is d) 36.884 kN/m³.
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A partially saturated soil sample has natural moisture content of 25% ...
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A partially saturated soil sample has natural moisture content of 25% and bulk unit weight of 18.5 kN/m3. The specific gravity of soil solids is 2.65 and unit weight of water is 9.81 kN/m3. The unit weight of the soil sample on full saturation isa)20.12 kN/m3b)18.50 kN/m3c)21.12 kN/m3d)19.03 kN/m3Correct answer is option 'D'. Can you explain this answer?
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A partially saturated soil sample has natural moisture content of 25% and bulk unit weight of 18.5 kN/m3. The specific gravity of soil solids is 2.65 and unit weight of water is 9.81 kN/m3. The unit weight of the soil sample on full saturation isa)20.12 kN/m3b)18.50 kN/m3c)21.12 kN/m3d)19.03 kN/m3Correct answer is option 'D'. Can you explain this answer? for Civil Engineering (CE) 2024 is part of Civil Engineering (CE) preparation. The Question and answers have been prepared according to the Civil Engineering (CE) exam syllabus. Information about A partially saturated soil sample has natural moisture content of 25% and bulk unit weight of 18.5 kN/m3. The specific gravity of soil solids is 2.65 and unit weight of water is 9.81 kN/m3. The unit weight of the soil sample on full saturation isa)20.12 kN/m3b)18.50 kN/m3c)21.12 kN/m3d)19.03 kN/m3Correct answer is option 'D'. Can you explain this answer? covers all topics & solutions for Civil Engineering (CE) 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A partially saturated soil sample has natural moisture content of 25% and bulk unit weight of 18.5 kN/m3. The specific gravity of soil solids is 2.65 and unit weight of water is 9.81 kN/m3. The unit weight of the soil sample on full saturation isa)20.12 kN/m3b)18.50 kN/m3c)21.12 kN/m3d)19.03 kN/m3Correct answer is option 'D'. Can you explain this answer?.
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