Coefficient of Internal Friction for Soil Calculator

✖Shear Force on Soil is the force which causes shear deformation to occur in the shear plane in soil mechanics.ⓘ Shear Force on Soil [F_s]			+10% -10%
✖Total normal force acting at the base of the slice.ⓘ Total Normal Force [P]			+10% -10%

✖Coefficient of Internal Friction is a measure of the ability of a unit of rock or soil to withstand shear stress.ⓘ Coefficient of Internal Friction for Soil [tanφ]

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Formula

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Coefficient of Internal Friction for Soil

Formula

`"tanφ" = ("F"_{"s"}/"P")`

Example

`"0.323333"=("48.5N"/"150N")`

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Coefficient of Internal Friction for Soil Solution

STEP 0: Pre-Calculation Summary

Formula Used

Coefficient of Internal Friction = (Shear Force on Soil/Total Normal Force)
tanφ = (F_s/P)
This formula uses 3 Variables

Variables Used

Coefficient of Internal Friction - Coefficient of Internal Friction is a measure of the ability of a unit of rock or soil to withstand shear stress.
Shear Force on Soil - (Measured in Newton) - Shear Force on Soil is the force which causes shear deformation to occur in the shear plane in soil mechanics.
Total Normal Force - (Measured in Newton) - Total normal force acting at the base of the slice.

STEP 1: Convert Input(s) to Base Unit

Shear Force on Soil: 48.5 Newton --> 48.5 Newton No Conversion Required
Total Normal Force: 150 Newton --> 150 Newton No Conversion Required

STEP 2: Evaluate Formula

Substituting Input Values in Formula

tanφ = (F_s/P) --> (48.5/150)

Evaluating ... ...

tanφ = 0.323333333333333

STEP 3: Convert Result to Output's Unit

0.323333333333333 --> No Conversion Required

FINAL ANSWER

0.323333333333333 ≈ 0.323333 <-- Coefficient of Internal Friction

(Calculation completed in 00.020 seconds)

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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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< 16 Atterberg Limits Calculators

Angle of Internal Friction for Soil

Go Angle of Internal Friction = arctan(Shear Force on Soil/Normal Force on Soil)

Moisture Content of Soil given Liquidity Index

Go Water Content of Soil = ((Liquidity Index*Plasticity Index)+Plastic Limit)

Plasticity Index of Soil given Liquidity Index

Go Plasticity Index = (Water Content of Soil-Plastic Limit)/Liquidity Index

Liquidity Index of Soil

Go Liquidity Index = (Water Content of Soil-Plastic Limit)/Plasticity Index

Shearing Force on Plane when Sliding on Plane is Impending

Go Shear Force on Soil = (Normal Force on Soil*Coefficient of Internal Friction)

Normal Force on given Plane in Cohesionless Soil

Go Normal Force on Soil = (Shear Force on Soil/Coefficient of Internal Friction)

Coefficient of Internal Friction for Soil

Go Coefficient of Internal Friction = (Shear Force on Soil/Total Normal Force)

Percent of Soil Finer than Clay Size given Activity Index

Go Percentage of Clay Fraction = (Plasticity Index/Activity Index)

Plasticity Index of Soil given Activity Index

Go Plasticity Index = (Activity Index*Percentage of Clay Fraction)

Activity Index of Soil

Go Activity Index = (Plasticity Index/Percentage of Clay Fraction)

Shrinkage Limit of Soil given Shrinkage Index

Go Shrinkage Limit = (Plastic Limit-Shrinkage Index)

Plastic Limit of Soil given Shrinkage Index

Go Plastic Limit = (Shrinkage Index+Shrinkage Limit)

Shrinkage Index of Soil

Go Shrinkage Index = (Plastic Limit-Shrinkage Limit)

Plastic Limit of Soil given Plasticity Index

Go Plastic Limit = Liquid Limit-Plasticity Index

Liquid Limit of Soil given Plasticity Index

Go Liquid Limit = Plasticity Index+Plastic Limit

Plasticity Index of Soil

Go Plasticity Index = Liquid Limit-Plastic Limit

Coefficient of Internal Friction for Soil Formula

Coefficient of Internal Friction = (Shear Force on Soil/Total Normal Force)
tanφ = (F_s/P)

What is Coefficient of Internal Friction?

The magnitude of the shear stress that causes failure in a material subjected to no normal stress is related to the materials cohesive strength.The slope of the Mohr failure envelope is the ratio of the shear stress to the normal stress at failure. This ratio is termed the coefficient of internal friction.

How to Calculate Coefficient of Internal Friction for Soil?

Coefficient of Internal Friction for Soil calculator uses Coefficient of Internal Friction = (Shear Force on Soil/Total Normal Force) to calculate the Coefficient of Internal Friction, The Coefficient of Internal Friction for Soil is defined as the ratio of the shear stress to the normal stress at failure. Coefficient of Internal Friction is denoted by tanφ symbol.

How to calculate Coefficient of Internal Friction for Soil using this online calculator? To use this online calculator for Coefficient of Internal Friction for Soil, enter Shear Force on Soil (F_s) & Total Normal Force (P) and hit the calculate button. Here is how the Coefficient of Internal Friction for Soil calculation can be explained with given input values -> 0.323333 = (48.5/150).

FAQ

What is Coefficient of Internal Friction for Soil?

The Coefficient of Internal Friction for Soil is defined as the ratio of the shear stress to the normal stress at failure and is represented as tanφ = (F_s/P) or Coefficient of Internal Friction = (Shear Force on Soil/Total Normal Force). Shear Force on Soil is the force which causes shear deformation to occur in the shear plane in soil mechanics & Total normal force acting at the base of the slice.

How to calculate Coefficient of Internal Friction for Soil?

The Coefficient of Internal Friction for Soil is defined as the ratio of the shear stress to the normal stress at failure is calculated using Coefficient of Internal Friction = (Shear Force on Soil/Total Normal Force). To calculate Coefficient of Internal Friction for Soil, you need Shear Force on Soil (F_s) & Total Normal Force (P). With our tool, you need to enter the respective value for Shear Force on Soil & Total Normal Force 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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