## Civil Experiences Best Education Blog

Join WhatsApp groups and get 100% Free product coupon/Week and many more... Join the largest community now.

Join WhatsApp Group
If you don't join, then you're missing something big.

# What is EI in Civil Engineering | What is meant by EI constant in a given structure

Rate this post

## What is EI in Civil Engineering

EI is the product of the materials modulus of elasticity (E) and the elements second moment of area (I).

• E” is a function of how stiff the material is.
• I” is a function of the elements shape.
what is ei in engineering, ei in engineering, ei value, ei in structural analysis, value of ei, ei meaning in structural analysis, what is ei in structural analysis, ei constant value, ei in the strength of materials, ei meaning in construction, ei mechanics of materials, constant ei value, what is an ei in engineering… These all are related query for this article and has the same article as a solution.

### What is meant by EI constant in a given structure

The EI value defines how stiff a structure is.

For example in an EI of the simple concrete beam with width b and depth d, the value of I is equal to b*d^3/12.

The deflection can be calculated as 5/384 * w*length^4 / EI.

In this example, the variables are

• The span of the beam (length),
• The weight that the beam carries (w),
• The beam properties (EI).

The EI constant is often an expression in the engineering world to explain the stiffness of a structural element. E is the Modulus of Elasticity, and I is the second moment of inertia.

EI is most often used in FEM (Finite Element Modeling). This expression is a fundamental building block for analyzing complex structures and is a property for many FEM elements (Beams, Bars, Rods, etc.)

Also ReadWhy are I beams shaped like an I?