Computer · Soil Mechanics
The coefficient of active earth pressure (Ka) for cohesionless granular soils is given by the formula:
- 11 - cos(φ)1 + cos(φ)
- 21 + cos(φ)1 - cos(φ)
- 31 - sin(φ)1 + sin(φ)✓
- 41 + sin(φ)1 - sin(φ)
Correct answer
1 - sin(φ)1 + sin(φ)
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