Enter the internal friction angle of the material into the Earth Pressure Coefficient Calculator. The calculator will evaluate the Earth Pressure Coefficient.

## Earth Pressure Coefficient Formula

The following two example problems outline the steps and information needed to calculate the Earth Pressure Coefficient.

EPC = 1- sin (fa)

Variables:

• EPC is the Earth Pressure Coefficient ( )
• fa is the internal friction angle of the material

## How to Calculate Earth Pressure Coefficient?

The following steps outline how to calculate the Earth Pressure Coefficient.

1. First, determine the internal friction angle of the material.
2. Next, gather the formula from above = EPC = 1- sin (fa).
3. Finally, calculate the Earth Pressure Coefficient.
4. After inserting the variables and calculating the result, check your answer with the calculator above.

Example Problem :

Use the following variables as an example problem to test your knowledge.

internal friction angle of the material = 45

EPC = 1- sin (fa) = ?