Angle of Internal Friction given Shear Strength of Cohesive Soil Solution

STEP 0: Pre-Calculation Summary
Formula Used
Angle of Internal Friction of Cohesive Soil = atan((Shear Strength-Unit Cohesion)/Normal Stress)
Φc = atan((τs-cu)/σNormal)
This formula uses 2 Functions, 4 Variables
Functions Used
tan - The tangent of an angle is a trigonometric ratio of the length of the side opposite an angle to the length of the side adjacent to an angle in a right triangle., tan(Angle)
atan - Inverse tan is used to calculate the angle by applying the tangent ratio of the angle, which is the opposite side divided by the adjacent side of the right triangle., atan(Number)
Variables Used
Angle of Internal Friction of Cohesive Soil - (Measured in Radian) - Angle of Internal Friction of Cohesive Soil is a measure of the shear strength of soil due to friction in cohesive soil.
Shear Strength - (Measured in Pascal) - Shear Strength is the strength of a material against structural failure when the material fails in shear.
Unit Cohesion - (Measured in Pascal) - Unit Cohesion is the shear strength of soil due to interparticle bonding and cementation.
Normal Stress - (Measured in Pascal) - Normal Stress is the stress component that acts perpendicular to the plane of interest within a soil mass or structure.
STEP 1: Convert Input(s) to Base Unit
Shear Strength: 1.2 Megapascal --> 1200000 Pascal (Check conversion ​here)
Unit Cohesion: 10 Pascal --> 10 Pascal No Conversion Required
Normal Stress: 0.8 Pascal --> 0.8 Pascal No Conversion Required
STEP 2: Evaluate Formula
Substituting Input Values in Formula
Φc = atan((τs-cu)/σNormal) --> atan((1200000-10)/0.8)
Evaluating ... ...
Φc = 1.57079566012267
STEP 3: Convert Result to Output's Unit
1.57079566012267 Radian -->89.9999618025123 Degree (Check conversion ​here)
FINAL ANSWER
89.9999618025123 89.99996 Degree <-- Angle of Internal Friction of Cohesive Soil
(Calculation completed in 00.007 seconds)

Credits

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Created by Suraj Kumar
Birsa Institute of Technology (BIT), Sindri
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Meerut Institute of Engineering and Technology (MIET), Meerut
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Stability Analysis of Infinite Slopes Calculators

Normal Stress given Shear Stress of Cohesionless Soil
​ LaTeX ​ Go Normal Stress in Mega Pascal = Shear Stress for Factor of Safety*cot((Angle of Inclination))
Normal Stress given Shear Strength of Cohesionless Soil
​ LaTeX ​ Go Normal Stress in Mega Pascal = Shear Strength/tan((Angle of Internal Friction))
Shear Strength of Cohesionless Soil
​ LaTeX ​ Go Shear Strength = Normal Stress in Mega Pascal*tan((Angle of Internal Friction))
Angle of Internal Friction given Shear Strength of Cohesionless Soil
​ LaTeX ​ Go Angle of Internal Friction = atan(Shear Strength/Normal Stress in Mega Pascal)

Angle of Internal Friction given Shear Strength of Cohesive Soil Formula

​LaTeX ​Go
Angle of Internal Friction of Cohesive Soil = atan((Shear Strength-Unit Cohesion)/Normal Stress)
Φc = atan((τs-cu)/σNormal)

What is Angle of Internal Friction?

The angle of internal friction is a physical property of earth materials or the slope of a linear representation of the shear strength of earth materials.

How to Calculate Angle of Internal Friction given Shear Strength of Cohesive Soil?

Angle of Internal Friction given Shear Strength of Cohesive Soil calculator uses Angle of Internal Friction of Cohesive Soil = atan((Shear Strength-Unit Cohesion)/Normal Stress) to calculate the Angle of Internal Friction of Cohesive Soil, The Angle of Internal Friction given Shear Strength of Cohesive Soil formula is defined as the maximum slope at which cohesive soil remains stable, defined by its shear strength. Angle of Internal Friction of Cohesive Soil is denoted by Φc symbol.

How to calculate Angle of Internal Friction given Shear Strength of Cohesive Soil using this online calculator? To use this online calculator for Angle of Internal Friction given Shear Strength of Cohesive Soil, enter Shear Strength s), Unit Cohesion (cu) & Normal Stress Normal) and hit the calculate button. Here is how the Angle of Internal Friction given Shear Strength of Cohesive Soil calculation can be explained with given input values -> 1.570796 = atan((1200000-10)/0.8).

FAQ

What is Angle of Internal Friction given Shear Strength of Cohesive Soil?
The Angle of Internal Friction given Shear Strength of Cohesive Soil formula is defined as the maximum slope at which cohesive soil remains stable, defined by its shear strength and is represented as Φc = atan((τs-cu)/σNormal) or Angle of Internal Friction of Cohesive Soil = atan((Shear Strength-Unit Cohesion)/Normal Stress). Shear Strength is the strength of a material against structural failure when the material fails in shear, Unit Cohesion is the shear strength of soil due to interparticle bonding and cementation & Normal Stress is the stress component that acts perpendicular to the plane of interest within a soil mass or structure.
How to calculate Angle of Internal Friction given Shear Strength of Cohesive Soil?
The Angle of Internal Friction given Shear Strength of Cohesive Soil formula is defined as the maximum slope at which cohesive soil remains stable, defined by its shear strength is calculated using Angle of Internal Friction of Cohesive Soil = atan((Shear Strength-Unit Cohesion)/Normal Stress). To calculate Angle of Internal Friction given Shear Strength of Cohesive Soil, you need Shear Strength s), Unit Cohesion (cu) & Normal Stress Normal). With our tool, you need to enter the respective value for Shear Strength, Unit Cohesion & Normal Stress and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.
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