Weighted Friction Angle given Factor of Safety with respect to Shear Strength Solution

STEP 0: Pre-Calculation Summary
Formula Used
Weighted Friction Angle = atan((Submerged Unit Weight/Saturated Unit Weight)*(tan((Angle of Internal Friction of Soil))/Factor of Safety))
φw = atan((γ'/γsat)*(tan((Φi))/fs))
This formula uses 2 Functions, 5 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
Weighted Friction Angle - (Measured in Radian) - Weighted Friction Angle is an effective measure combining materials' friction properties and their relative contributions in geotechnical engineering for stability analysis.
Submerged Unit Weight - (Measured in Newton per Cubic Meter) - Submerged Unit Weight is the effective weight of the soil per unit volume when it is submerged in water.
Saturated Unit Weight - (Measured in Newton per Cubic Meter) - Saturated Unit Weight is the value of the unit weight of the soil when the soil is completely saturated with water that is all the soil pores are completely filled with water.
Angle of Internal Friction of Soil - (Measured in Radian) - Angle of Internal Friction of Soil is a measure of the shear strength of soil due to friction.
Factor of Safety - Factor of Safety is a measure of the load-carrying capacity of a structure or material compared to the actual load or stress that is applied to it.
STEP 1: Convert Input(s) to Base Unit
Submerged Unit Weight: 31 Newton per Cubic Meter --> 31 Newton per Cubic Meter No Conversion Required
Saturated Unit Weight: 9.98 Newton per Cubic Meter --> 9.98 Newton per Cubic Meter No Conversion Required
Angle of Internal Friction of Soil: 82.87 Degree --> 1.44635435112743 Radian (Check conversion ​here)
Factor of Safety: 2.8 --> No Conversion Required
STEP 2: Evaluate Formula
Substituting Input Values in Formula
φw = atan((γ'sat)*(tan((Φi))/fs)) --> atan((31/9.98)*(tan((1.44635435112743))/2.8))
Evaluating ... ...
φw = 1.45851353248699
STEP 3: Convert Result to Output's Unit
1.45851353248699 Radian -->83.566669774237 Degree (Check conversion ​here)
FINAL ANSWER
83.566669774237 83.56667 Degree <-- Weighted Friction Angle
(Calculation completed in 00.004 seconds)

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Submerged Unit Weight given Factor of Safety with respect to Shear Strength
​ LaTeX ​ Go Submerged Unit Weight = tan((Weighted Friction Angle*pi)/180)/((1/Saturated Unit Weight)*(tan((Angle of Internal Friction of Soil*pi)/180)/Factor of Safety))
Saturated Unit Weight given Factor of Safety with respect to Shear Strength
​ LaTeX ​ Go Saturated Unit Weight = ((Submerged Unit Weight/tan((Weighted Friction Angle for Internal Friction)))*(tan((Angle of Internal Friction))/Factor of Safety))
Factor of Safety with respect to Shear Strength
​ LaTeX ​ Go Factor of Safety = ((Submerged Unit Weight/Saturated Unit Weight)*(tan((Angle of Internal Friction))/tan((Weighted Friction Angle for Internal Friction))))
Weighted Friction Angle given Factor of Safety with respect to Shear Strength
​ LaTeX ​ Go Weighted Friction Angle = atan((Submerged Unit Weight/Saturated Unit Weight)*(tan((Angle of Internal Friction of Soil))/Factor of Safety))

Weighted Friction Angle given Factor of Safety with respect to Shear Strength Formula

​LaTeX ​Go
Weighted Friction Angle = atan((Submerged Unit Weight/Saturated Unit Weight)*(tan((Angle of Internal Friction of Soil))/Factor of Safety))
φw = atan((γ'/γsat)*(tan((Φi))/fs))

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 Weighted Friction Angle given Factor of Safety with respect to Shear Strength?

Weighted Friction Angle given Factor of Safety with respect to Shear Strength calculator uses Weighted Friction Angle = atan((Submerged Unit Weight/Saturated Unit Weight)*(tan((Angle of Internal Friction of Soil))/Factor of Safety)) to calculate the Weighted Friction Angle, The Weighted Friction Angle given Factor of Safety with respect to Shear Strength is defined as angle of internal friction adjusted for Factor of Safety, ensuring stability in structures against shear strength failure. Weighted Friction Angle is denoted by φw symbol.

How to calculate Weighted Friction Angle given Factor of Safety with respect to Shear Strength using this online calculator? To use this online calculator for Weighted Friction Angle given Factor of Safety with respect to Shear Strength, enter Submerged Unit Weight '), Saturated Unit Weight sat), Angle of Internal Friction of Soil i) & Factor of Safety (fs) and hit the calculate button. Here is how the Weighted Friction Angle given Factor of Safety with respect to Shear Strength calculation can be explained with given input values -> 4788.017 = atan((31/9.98)*(tan((1.44635435112743))/2.8)).

FAQ

What is Weighted Friction Angle given Factor of Safety with respect to Shear Strength?
The Weighted Friction Angle given Factor of Safety with respect to Shear Strength is defined as angle of internal friction adjusted for Factor of Safety, ensuring stability in structures against shear strength failure and is represented as φw = atan((γ'sat)*(tan((Φi))/fs)) or Weighted Friction Angle = atan((Submerged Unit Weight/Saturated Unit Weight)*(tan((Angle of Internal Friction of Soil))/Factor of Safety)). Submerged Unit Weight is the effective weight of the soil per unit volume when it is submerged in water, Saturated Unit Weight is the value of the unit weight of the soil when the soil is completely saturated with water that is all the soil pores are completely filled with water, Angle of Internal Friction of Soil is a measure of the shear strength of soil due to friction & Factor of Safety is a measure of the load-carrying capacity of a structure or material compared to the actual load or stress that is applied to it.
How to calculate Weighted Friction Angle given Factor of Safety with respect to Shear Strength?
The Weighted Friction Angle given Factor of Safety with respect to Shear Strength is defined as angle of internal friction adjusted for Factor of Safety, ensuring stability in structures against shear strength failure is calculated using Weighted Friction Angle = atan((Submerged Unit Weight/Saturated Unit Weight)*(tan((Angle of Internal Friction of Soil))/Factor of Safety)). To calculate Weighted Friction Angle given Factor of Safety with respect to Shear Strength, you need Submerged Unit Weight '), Saturated Unit Weight sat), Angle of Internal Friction of Soil i) & Factor of Safety (fs). With our tool, you need to enter the respective value for Submerged Unit Weight, Saturated Unit Weight, Angle of Internal Friction of Soil & Factor of Safety and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.
How many ways are there to calculate Weighted Friction Angle?
In this formula, Weighted Friction Angle uses Submerged Unit Weight, Saturated Unit Weight, Angle of Internal Friction of Soil & Factor of Safety. We can use 2 other way(s) to calculate the same, which is/are as follows -
  • Weighted Friction Angle = (Submerged Unit Weight*Angle of Mobilized Friction)/Saturated Unit Weight
  • Weighted Friction Angle = (Submerged Unit Weight*Internal Friction Angle with Weighted Frict. Angle)/Saturated Unit Weight
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