Hollow Rectangle Square Elastic Section Modulus Calculator

This calculator calculates the section modulus for a Hollow Rectangle Square section. This is done with the equation below.
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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 breath, i.e. the breadth of the channel section.
﻿﻿h
 = the height, i.e. the height of the channel section.
﻿﻿B
 = the total breath, i.e. the breadth of the channel section.
﻿﻿H
 = the total height, i.e. the height of the channel section.
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Figure 1: Diagram of the Hollow Rectangle Square Section to Calculate the Section Modulus
CalculationInputs﻿﻿Total breadth, B
:40.00mm​
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﻿﻿Rectangle breadth, b
:25.00mm​
﻿
﻿﻿Total Height, H
:40.00mm​
﻿
﻿﻿Rectangle height, h
:35.00mm​
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Output﻿﻿Section Modulus, S
:6,200.52mm3​
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S=BH26−bh36HS = \frac{BH^2}{6}-\frac{bh^3}{6H}S=6BH2​−6Hbh3​
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