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}S=6BH2​−6Hbh3​
The following are the variables for the equations...
﻿﻿S
 = the section modulus
﻿﻿B
 = the breadth, i.e. the total breadth of the I beam.
﻿﻿H
 = the height, i.e. the total height of the I beam.
﻿﻿b
 = the breadth, i.e. two times the length b/2 in Figure 1.
﻿﻿h
 = 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
CalculationInputs﻿﻿Total breadth, B
:40.00mm​
﻿
﻿﻿Beam breadth, b
:20.00mm​
﻿
﻿﻿Total Height, H
:30.00mm​
﻿
﻿﻿Height, h
:25.00mm​
﻿
Output﻿﻿Section Modulus, S
:4,263.89mm3​
﻿
﻿
S=BH26−bh36HS = \frac{BH^2}{6}-\frac{bh^3}{6H}S=6BH2​−6Hbh3​
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