Civil Engineering - Soil Mechanics and Foundation Engineering - Discussion

3. 

The angle of internal friction is maximum for

[A]. angular-grained loose sand
[B]. angular-grained dense sand
[C]. round-grained dense sand
[D]. round-grained loose sand
[E]. clays.

Answer: Option B

Explanation:

No answer description available for this question.

Piyush said: (Jan 22, 2018)  
It is least for clay and max for angular grained dense sand.

Ankit said: (Feb 8, 2018)  
Please explain @Piyush.

Kadak Launda said: (Feb 24, 2018)  
Becoz angular grained soil will have more packing efficiency so it will have more internal friction.

Anomie said: (Apr 30, 2020)  
Angle of internal friction is dependent to normal stress (resultant) and the friction. So the dense sand has maximum normal stress and friction is also more due to which B is the right answer. Correct me if I am wrong.

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