Enter the moment and the section modulus into the calculator to determine the modulus of rupture. The modulus of rupture is a measure of the tensile strength of a material and can be calculated when the moment and section modulus are known.

## Modulus Of Rupture Formula

The following formula is used to calculate the modulus of rupture.

MOR = M / S

Variables:

- MOR is the modulus of rupture (psi)
- M is the moment (lb*ft)
- S is the section modulus (in^3)

To calculate the modulus of rupture, divide the moment by the section modulus.

## What is Modulus Of Rupture?

The modulus of rupture (MOR) is a measure of the extreme fiber stress at failure during a bending test. It is an important property for materials that are subject to bending loads, such as beams and slabs. The MOR is used to determine the load at which a material will fail in bending. It is a critical value for engineers and designers when selecting materials for construction and manufacturing applications.

## How to Calculate Modulus Of Rupture?

The following steps outline how to calculate the Modulus Of Rupture.

- First, determine the moment (M) in pound-feet (lb*ft).
- Next, determine the section modulus (S) in cubic inches (in^3).
- Next, gather the formula from above = MOR = M / S.
- Finally, calculate the Modulus Of Rupture (MOR) in pounds per square inch (psi).
- 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.

Moment (M) = 120 lb*ft

Section Modulus (S) = 8 in^3