I-Section Shaft Torsion

This calculator calculates the maximum allowable torsion for a shaft with an I-Section shaped cross-section. This is done using the equation below.
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T =τmax⋅JhmaxT\ =\frac{\tau_{max}\cdot J}{h_{max}}T =hmax​τmax​⋅J​
The following are the variables for the equations...
T = the torsion, twisting torque or tension. (Nm, lb f ft).
τ = the shear stress (Pa).
b = the inner breadth, i.e. the inner breadth of the channel section.
h = the inner height, i.e. the inner height of the channel section.
B = the larger breadth, i.e. the greater breadth of the channel section.
H = the larger height, i.e. the greater height of the channel section.
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Figure 1: Diagram of the I-Section Shaft to Calculate the Torsion
I-Section Shaft Torsion CalculatorInputs﻿﻿Inner height, h
:5.00m​
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﻿﻿Top/bottom height, H
:4.00m​
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﻿﻿Shear stress, τ
:5.00Pa​
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﻿﻿Inner breadth, b
:5.00m​
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﻿﻿Top/bottom breadth, B
:10.00m​
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Output﻿﻿Moment of inertia, J
:53,281.25​
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﻿﻿Torsion, T
:53,281.25​
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T =τmax⋅JbmaxT\ =\frac{\tau_{max}\cdot J}{b_{max}}T =bmax​τmax​⋅J​
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