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I Beam Elastic Section Modulus Calculator

This calculator calculates the section modulus for an i-beam section. This is done with the equation below.

S=BH26−bh36HS = \frac{BH^2}{6}-\frac{bh^3}{6H}

The following are the variables for the equations...

  1. 
    
    = the section modulus
  2. 
    
    = the breadth, i.e. the total breadth of the I beam.
  1. 
    
    = the height, i.e. the total height of the I beam.
  1. 
    
    = the breadth, i.e. two times the length b/2 in Figure 1.
  1. 
    
    = the height, i.e. the height of the middle bar of the I beam in Figure 1.
Figure 1: Diagram of an I Beam to Calculate the Section Modulus


Calculation

Inputs



B
:40.00 mm​



b
:20.00 mm​



H
:30.00 mm​



h
:25.00 mm​


Output



Section Modulus, S
:4,263.89 mm^3​


S=BH26−bh36HS = \frac{BH^2}{6}-\frac{bh^3}{6H}

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