Civil Engineering - Soil Mechanics and Foundation Engineering - Discussion

1. 

The maximum shear stress occurs on the filament which makes an angle with the horizontal plane equal to

[A]. 30°
[B]. 45°
[C]. 60°
[D]. 90°

Answer: Option B

Explanation:

No answer description available for this question.

Vijay Bhargava said: (Nov 12, 2016)  
Can anyone guide me what is meant by filament?

Vijay Bhargava said: (Nov 12, 2016)  
Can anyone guide me what is meant by filament?

Amulya Rajbhar said: (Dec 9, 2016)  
@Vijay.

Filament - wedge.

Pramit said: (Feb 14, 2017)  
Here, s = c + σ * tan(φ).

Sandeep Redddy said: (Mar 13, 2017)  
s = c+ σ * tan(φ).(φ) = 45degree.
o<tan(φ)<1.

So that angle is 45 degree.

Sumit said: (Jul 18, 2017)  
But tan60 = 1.732.

Sunny said: (May 6, 2018)  
Agree @Sumit,

Why not 60°? Give Any explanation.

Kartick said: (Sep 3, 2018)  
Please anyone elaborate the solution.

Jinish Patel said: (Dec 3, 2019)  
Tan45= 1 so maximum shear stress at 45 degrees on the wedge of the horizontal plane.

Prasun said: (Sep 21, 2020)  
Shear Stress= (P1-P2)/2 * Sin 2a,
For a = 45 , Shear Stress is max.
i.e. (P1-P2)/2.

Dikshant Nautiyal said: (Jan 27, 2021)  
According to Mohr's circle;

The critical angle is 45+ π by 2.

For cohesion, soil π is zero.

Then the angle between the horizontal plane and shear stress is 45.

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