Angle of Repose Calculator
We have all watched a rock slowly roll down a slightly steep hill. Use this tool to calculate the maximum steepness of an angle where granular material will not roll down.
Required Information
Angle of Repose:
Create Date: October 15, 2024
Last Modified Date: November 15, 2024
Angle of repose can be calculated various ways but with the formula that we employ we only need two variables to get your result. The two variables required are:
Once you hit calculate you will get a single value returned to you as your answer which is the angle of repose. This value is displayed in degrees by default. You can use the result to then determine if granules would be able to roll down the slope or if they would need to be assisted with agitation or by other means.
If you are looking for a simple and easy-to-use angle of repose calculator you are in the right place. To use our tool you need to follow the following steps:
Let's say you want to find the angle of repose for a hill that is 20 feet high and has a radius of 10 feet. You simply will enter 20 into the first field and then 10 into the second radius field. You will not have to change either of the units of measurement since they are in feet by default.
You can now hit calculate to get your answer. In this situation, we find that the angle of repose is 63.435 degrees. If needed, we can change the unit of measurement from degrees to another unit very easily by selecting it from the dropdown menu beside the answer.
A high angle of repose can indicate granules that are sticky or a hill/slope made of something that is not very easy to roll down for some reason.
Irregular, angular gravel would likely have the greatest angle of repose since the pieces would easily interlock and would require more of a steep slope to break free and begin to fall down.
Angle of repose typically increases when the friction coefficient increases. The more friction between two objects, the harder it would be for it to begin to simply roll or fall down.
